Exploring the Moon
(9-Adult) The Moon is as old as the Earth, and its surface is marked by craters and lava flows billions of years old. Explore these lunar features through a high-powered telescope at Observatory Park at Turner Farm and learn about their origins. See where the Apollo lunar landings occurred, and discuss what the astronauts found. Session held from 7:30 to 8:30 p.m. rain or shine with alternate viewing sessions available if cloudy. The cost is $8 per person. Call 703-324-8618.

69th Annual Fairfax County 4-H Fair and Carnival, August 3-6
Come to the 4-H Fair and Carnival at Frying Pan Farm Park for old-fashioned country fun with carnival games, rides, exhibits, Big Truck event and a tractor pull. Admission and parking are free on Thursday and Friday. Purchase unlimited carnival ride passes valid for use Thursday and Friday from 10 a.m. to 3 p.m.: $16 per person if purchased by 8 p.m. on July 26; $18 if purchased July 27 through 8 p.m. on August 1; and $25 the day of the event. Pick them up across from the carnival entrance under the tent on the day of the carnival. No refunds. Admission to the 4-H Fair is free. Weekend parking is $8/car/day. For more information, call 703-437-9101.

Flora Fauna-Summer Series
(3-6 yrs.) Join Hidden Pond Naturalists for a summer of exploration with a different topic each week. Come for one or sign up for all. The series meets from 11 to 11:45 a.m., and the cost is $5 per child for each session. Children must be accompanied by an adult. Call 703-451-9588.

Jr. Farmer Family Fun Series
(2-Adult) This family program goes behind the scenes to help farmers at Frying Pan Farm Park with chores such as milking the cows, feeding the animals, and shelling corn. Topics and activities vary each week in this four-part series that meets from 4 to 4:55 p.m. The cost of the series is $42 per person, and children must be accompanied by an adult registered in the program.

Ready, Set, Grow: Agriculture in the Classroom for Elementary Teachers (K-5)
(Adults) This highly interactive, professional development workshop at Green Spring Gardens helps you sprout successful learners in your K-5 classroom. The workshop from 9 a.m. to 1 p.m. features cross-curricular, standards-aligned lessons and resources that use Virginia agriculture and natural resources to engage learners in science, mathematics, language arts and social studies. Leave with resource kits full of curriculum, books, posters and a class set of laminated Virginia maps. The workshop is free, but space is limited and registration is required. For more information, call 703-642-5173.

69th Annual Fairfax County 4-H Fair and Carnival, August 3-6
Come to the 4-H Fair and Carnival at Frying Pan Farm Park for old-fashioned country fun with carnival games, rides, exhibits, Big Truck event and a tractor pull. Admission and parking are free on Thursday and Friday. Purchase unlimited carnival ride passes valid for use Thursday and Friday from 10 a.m. to 3 p.m.: $16 per person if purchased by 8 p.m. on July 26; $18 if purchased July 27 through 8 p.m. on August 1; and $25 the day of the event. Pick them up across from the carnival entrance under the tent on the day of the carnival. No refunds. Admission to the 4-H Fair is free. Weekend parking is $8/car/day. For more information, call 703-437-9101.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Come by our Visitor Center deck at Riverbend Park to watch our turtles enjoy some outdoor time. Afterwards, go on a scavenger hunt and hike around the park. The program from 4 to 5 p.m. is free! For more, call 703-759-9018.

Riverside Campfire - River Revelry
(2-Adult) Enjoy a fun-filled evening of stories and games at Riverbend Park from 6 to 7:30 p.m. Learn about otters, beavers and other animals that call the Potomac home. S’mores are provided. The cost is $8 per person. Come early if you want to bring a picnic or hot dogs to toast. Bring a toasting stick, blanket and flashlight. Children must be accompanied by a registered adult. Meet at the visitor center. For more information, call 703-759-9018.

The Moon and the Stars Campfire
(2-Adult) Meet at Cabell’s Mill and talk about the moon and stars around a warm campfire. Then head out into the meadow at Ellanor C. Lawrence Park with a naturalist to learn how to identify the summer constellations. Enjoy s’mores around the campfire. The program from 8:30 to 10 p.m. costs $8 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-631-0013.

69th Annual Fairfax County 4-H Fair and Carnival, August 3-6
Come to the 4-H Fair and Carnival at Frying Pan Farm Park for old-fashioned country fun with carnival games, rides, exhibits, Big Truck event and a tractor pull. Admission and parking are free on Thursday and Friday. Purchase unlimited carnival ride passes valid for use Thursday and Friday from 10 a.m. to 3 p.m.: $16 per person if purchased by 8 p.m. on July 26; $18 if purchased July 27 through 8 p.m. on August 1; and $25 the day of the event. Pick them up across from the carnival entrance under the tent on the day of the carnival. No refunds. Admission to the 4-H Fair is free. Weekend parking is $8/car/day. For more information, call 703-437-9101.

Campfire Saturdays: Stargazing
(3-Adult) Enjoy a stroll along the shore at Burke Lake Park and learn about the constellations and other night-sky features. Our astronomical naturalist identifies the stars for you and lets you try out a telescope. The program concludes with a campfire. S’mores ingredients are provided; hot dogs are welcome. The program from 8 to 9 p.m. costs $8 per person. Children must be accompanied by a registered adult. Call 703-323-6600.

English Garden Floral Design Workshop
(16-Adult) Create the look of a summer English garden for your home using an assortment of cut flowers, greens and garden materials. Reuse the container to make another design of your own with the skills you learned in this class at Green Spring Gardens. The workshop from 9:30 to 11 a.m. costs $38 per person, plus a $25 supply fee. Please register for both. Call 703-642-5173.

Pancakes at the Mill
(4-Adult) Meet at Cabell’s Mill at Ellanor C. Lawrence Park and enjoy some time around the campfire. Make corn pancakes with honey while discovering the little-known history of the place we now call Cabell’s Mill. The program from 11:30 a.m. to 12:30 p.m. costs $8 per person. Children must be accompanied by a registered adult. For more information, call 703-631-0013.

National Night Out Campfire
(2-Adult) National Night Out is August 2, but we continue to honor our law enforcement community at Ellanor C. Lawrence Park. Visit with Sully District officers who will bring squad cars and offer safety demonstrations from 7 to 8 p.m. Enjoy a campfire, too. It’s free! Call 703-631-0013.

69th Annual Fairfax County 4-H Fair and Carnival, August 3-6
Come to the 4-H Fair and Carnival at Frying Pan Farm Park for old-fashioned country fun with carnival games, rides, exhibits, Big Truck event and a tractor pull. Admission and parking are free on Thursday and Friday. Purchase unlimited carnival ride passes valid for use Thursday and Friday from 10 a.m. to 3 p.m.: $16 per person if purchased by 8 p.m. on July 26; $18 if purchased July 27 through 8 p.m. on August 1; and $25 the day of the event. Pick them up across from the carnival entrance under the tent on the day of the carnival. No refunds. Admission to the 4-H Fair is free. Weekend parking is $8/car/day. For more information, call 703-437-9101.

Grinding Demonstrations
(All ages) See and hear 19th century technology at work at Colvin Run Mill. The miller will be grinding, conditions permitting, from noon to 3 p.m. Please call the site to confirm. The tour costs $7 for adults, $6 for students 16 and up with ID, and $5 for children and seniors. No reservations are required. For more, call 703-759-2771.

Afternoon Teas with a Difference
(Adults 21 yrs.+) Celebrate Britain’s National Afternoon Tea Week with a special “Royale Tea” at Historic Green Spring that offers you a choice of a glass of champagne at the beginning or sherry at the end. Discover playful twists on teatime traditions across the UK this week and alternative afternoon teas served up year-round. The cost is $42 per person for this tea from 3 to 4:30 p.m. Reservations are required. Call 703-941-7987.

Wagon Ride-Journey to the Potomac River
(2-Adult) Enjoy riding through the woods and along the Potomac River from 10 to 11 a.m. while finding out about Riverbend Park’s wildlife and the American Indians who once lived here. The cost is $7 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-759-9018.

Sundaes in the Park
(2-Adult) Bring the family for a Sunday stroll along the paths around Hidden Oaks Nature Center with a vanilla ice cream sundae. Sundaes are $2 each, and the woodland walk and visit to Nature Playce are free. The event runs from 1 to 3 p.m. Preregistration is preferred but not required. For more information, call 703-941-1065.

Water Critters
(2-6 yrs.) Explore the wet world of otters, crabs, turtles, frogs and fish through songs, story and a visit to a pond. Meet live turtles and frogs. This 45-minute program at Hidden Oaks Nature Center begins at 1 p.m. on August 8 and at 10 a.m. on August 22. The cost is $6 per child. Children must be accompanied by an adult. For more information, call 703-941-1065.

Bats
(7-Adult) Walk the meadows and forest edges at Lake Accotink to see bats feeding on insects. Use a bat detector to hear echolocation. Learn about our native bats from 8:30 to 9:30 p.m. The cost is $6 per person. Children must be accompanied by a registered adult. For more, call 703-569-3464.

Summer Reading Puppet Show
(3-Adult) Young story lovers are invited to Green Spring Gardens at 10 a.m. for a puppet show by Carousel Puppets. You’ll see bunnies, birds and a host of woodland creatures in this colorful and musical show. The cost is $4 per person. Children must be accompanied by a registered adult. This program is sponsored by Friends of Green Spring. Call 703-642-5173.

Flora Fauna-Summer Series
(3-6 yrs.) Join Hidden Pond Naturalists for a summer of exploration with a different topic each week. Come for one or sign up for all. The series meets from 11 to 11:45 a.m., and the cost is $5 per child for each session. Children must be accompanied by an adult. Call 703-451-9588.

S’mores & Campfire Stories
(6-Adult) Join Lake Fairfax staff for a night of campfire stories while enjoying s’mores. The program from 6:30 to 8 p.m. costs $8 per person. For more information, call 703-471-5414.

Riverside Campfire - Terrific Turkeys
(2-Adult) Wild Turkeys roam the meadows and riverbanks of Riverbend Park. Learn about these elusive and seasonal birds with games and activities from 6 to 7:30 p.m. Bring a toasting stick; s’mores are provided. The cost is $8 per person. Come early if you’d like to bring a picnic or hot dogs to toast. For more, call 703-759-9018.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Come by our Visitor Center deck at Riverbend Park to watch our turtles enjoy some outdoor time. Afterwards, go on a scavenger hunt and hike around the park. The program from 4 to 5 p.m. is free! For more, call 703-759-9018.

Pop Up Museum: Fairfax County at 275
(2-Adult) Come share your Fairfax County memories at a pop-up museum to commemorate the county’s 275th anniversary. A pop-up museum is a special temporary exhibit created by people like you who display objects such as old yearbooks or family heirlooms that connect them to Fairfax County. This museum pops up at Ellanor C. Lawrence Park from 1 to 4 p.m., and it’s free. Registration is required to exhibit an object. Walk-in visitors welcome. Call 703-631-0013.

Garden Tour, Ice Cream Social and Exhibit
(Adult) Stroll through Green Spring Gardens with a Master Gardener docent, then cool down at an ice cream social in the 1784 Historic House. Enjoy delicious ices and toppings and view a special limited-time photo exhibit on the fascinating history of the house. The program from 10 to 11:30 a.m. costs $12. Call 703-941-7987.

Boardwalk Astronomy
(12-Adult) What’s new in the night sky? Join naturalists at Huntley Meadows Park as they take you on a tour of constellations, comets and other current events happening in the heavens above. The program from 8 to 10 p.m. costs $8 per person and will be canceled in the event of rain or other severe weather. For more information, call 703-768-2525.

Meteor Astronomy
(10-Adult) This session at Observatory Park at Turner Farm covers basic meteor astronomy. It includes what meteors are, their origins, best time to view, fireball reporting, visual and video observing techniques, movie clips from past meteor storms, how one estimates trajectory and orbits, and other instrumental techniques used by amateur meteor observers. An optional outdoor observing session will be held after class, weather permitting. Bring a lawn chair and warm cover/sleeping bag. Class meets from 7:30 to 8:30 p.m. and costs $8 per person. For more information, call 703-324-8618.

Wagon Ride-Birds, Butterflies & Blossoms
(2-Adult) Take a wagon ride scavenger hunt through the meadow at Riverbend Park from 10 to 11 a.m. Search for birds and butterflies and meet a friendly animal up close. The cost is $7 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-759-9018.

Dragonflies
(12-Adult) Dragonflies are cool! Learn about the life cycle, behavior and identification of the many dragonflies and damselflies at Huntley Meadows Park. Venture to the wetland to observe these acrobatic fliers in action. This program from 9 to 11 a.m. costs $8 per person. It will be canceled if it rains. For more information, call 703-768-2525.

Little Hands on the Farm
(2-5 yrs.) Join us in the Kidwell Barn at Frying Pan Farm Park to meet a farm animal, enjoy a story, craft or game, and pretend to be the famer with fun chores. This is a program your child will remember! Sessions for children age two to three run from 9:45 to 10:30 a.m. Sessions for children age three to five run from 11 to 11:45 a.m. The cost is $8 per child. Pre-paid reservations are required. An adult must attend the class with the child. For more information, call 703-437-9101.

Animal Feeding at the Nature Center
(3-Adult) It’s dinner time at Hidden Pond Nature Center and worms and insects are on the menu. Help our naturalist care for and feed the nature center’s animals from 4:30 to 5:30 p.m. The cost is $5 per person. For more, call 703-451-9588.

Useful & Edible Native Plants and Trees
(12-Adult) Come to Burke Lake Park from 9 to 11 a.m. to learn about native plants and trees in the wilderness (or your own backyard) that offer food and so much more. Find out which plants are safe to eat and those to avoid. Learn the right weeds and trees to help start a fire, get a drink, find a meal, make a rope, stop an itch or heal a wound. Explore with us the trails, fields and forests of Burke Lake Park and see what Mother Nature is growing just for you. Bring water, snack, rainwear, and wear suitable outdoor clothes and hiking boots/shoes. The cost is $23 per person, and the program runs rain or shine. For more information, call 703-323-6600.

Flora Fauna-Summer Series
(3-6 yrs.) Join Hidden Pond Naturalists for a summer of exploration with a different topic each week. Come for one or sign up for all. The series meets from 11 to 11:45 a.m., and the cost is $5 per child for each session. Children must be accompanied by an adult. Call 703-451-9588.

Homeschool Day
(5-12 yrs.) Bring your homeschool student or group to Sully Historic Site for hands-on fun learning designed to enrich understanding of Fairfax County circa 1800. The program from 10 a.m. to noon costs $10 for children; $5 for adult chaperones. For more information, call 703-437-1794.

Garden Tour and Tea
(Adult) Tour the glorious Green Spring demonstration gardens with a Master Gardener docent who will inspire you with stories of Green Spring Gardens’ past and present. Afterwards, enjoy a traditional English afternoon tea. The cost of the program from 1 to 3 p.m. is $32 per person. Reservations are required. For more information, call 703-941-7987.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Come by our Visitor Center deck at Riverbend Park to watch our turtles enjoy some outdoor time. Afterwards, go on a scavenger hunt and hike around the park. The program from 4 to 5 p.m. is free! For more, call 703-759-9018.

Historic Desserts
(7-Adult) Everyone loves desserts, but have you ever wondered how they were made 160 years ago? Join a historian at Ellanor C. Lawrence Park and learn about the Machens who lived at Walney in the 19th century and how they might have made dessert. Try making raspberry dumplings with homemade ice cream. The program from 7 to 8:30 p.m. costs $10 per person. Children must be accompanied by a registered adult. For more information, call 703-631-0013.

Riverside Campfire - American Indians
(2-Adult) Play American Indian games and listen to stories ‘round the campfire at Riverbend Park. S’mores are provided. Come early if you want to bring a picnic or toast hotdogs. Bring a toasting stick, blanket and flashlight. The program from 6 to 7:30 p.m. costs $8 per person. For more information, call 703-759-9018.

Summer Astronomy Campfire
(4-Adult) Enjoy a campfire at Hidden Oaks Nature Center and learn what ancient cultures saw in the stars. Look through a telescope at the moon and learn to identify the visible constellations. Make s’mores. The one-hour program begins at 8:15 p.m. and costs $6 per person. Children must be accompanied by an adult registered in the program. This event will be canceled if it rains. The minimum age to attend is four years old. For more information, call 703-941-1065.

Campfire Fridays Summer
(3-Adult) Come along for a night of campfire, s’mores, animals and more. Each summer evening campfire at Hidden Pond Nature Center will feature a different topic and different areas of the park will be visited. The program from 7:30 to 9 p.m. costs $8 per person. Call 703-451-9588.

Workshop: Casting Leaves in Concrete
(Adults) Capture the beauty of ornamental leaves by casting them in concrete to decorate your home or garden. Staff from Green Spring Gardens will demonstrate casting and painting techniques and assist participants in making a creation to take home. The two-hour workshop begins at 9:30 a.m. and costs $40 per person, plus a $25 supply fee. Please register for both the workshop and supply fee. Call 703-642-5173.

Sketch Hike: Historic Huntley
(11-Adult) Join park naturalist and artist Margaret Wohler for a hike through history at Huntley Meadows Park. Meet at the Norma Hoffman Visitor Center and hike up to Historic Huntley for some breathtaking views while sketching some of the Mason family villa’s historic architecture and landscaping. The program from 10 a.m. to noon costs $8 per person. Call 703-768-2525.

Ice Cream at Historic Huntley
(2-Adult) Make and enjoy hand-cranked ice cream as Huntley's Harris family may have done. Discover how the histories of ice cream and Historic Huntley follow a similar path from elite luxury to family fare. A tour of the ice well and Historic Huntley House are included in the $8 per person cost. This event runs from 1 to 2 p.m. For more information, call 703-768-2525.

Lizard Survey
(8-Adult) Come to Ellanor C. Lawrence Park and watch a short movie on our native lizards, then see our lizards up close. Join a naturalist on a short hike to find these elusive reptiles. Meet at Cabell’s Mill at 5:30 p.m. for this one-hour program. The cost is $5 per person. Children must be accompanied by an adult registered in the program. For more, call 703-631-0013.

Dairy Farming at Walney: Ice Cream
(4-Adult) Explore Walney’s dairy farm history while touring the ice house and dairy at Ellanor C. Lawrence Park. Try your hand at ice-making tools and picking up an ice block. We’ll be making and eating hand-cranked ice cream. The program from 2 to 3:30 p.m. costs $8 per person. Children must be accompanied by an adult registered in the program. For more information about the Diary Farming program, call 703-631-0013.

40th Anniversary
(All ages) Come enjoy a very special Grinding Day as Colvin Run Mill celebrates its 40th year on the National Register of Historic Places. Maintained by the National Park Service, The National Register of Historic Places is the official list of the nation’s historic places worthy of preservation, and Colvin Run Mill has been on it since 1977. See how flour and corn meal used to be made. This grinding event runs from noon to 3 p.m., and it is free! For more information about grinding demonstrations, call 703-759-2771.

Grinding Demonstrations
(All ages) See and hear 19th century technology at work at Colvin Run Mill. The miller will be grinding, conditions permitting, from noon to 3 p.m. Please call the site to confirm. The tour costs $7 for adults, $6 for students 16 and up with ID, and $5 for children and seniors. No reservations are required. For more, call 703-759-2771.

The People’s Princess
(Adult) Twenty years after her death, the story of Diana, Princess of Wales still captivates the world. Look back at her intensely public and turbulent life and its impact on the British monarchy as we remember the many faces of Diana: fairytale princess, style icon, humanitarian and mother. This program from 1 to 3 p.m. at Historic Green Spring includes a traditional English tea. The cost is $32 for the program and tea; $12 for the program only. For more information about this and other teas at Green Spring Gardens, call 703-941-7987.

Little Hands on the Farm
(2-5 yrs.) Join us in the Kidwell Barn at Frying Pan Farm Park to meet a farm animal, enjoy a story, craft or game, and pretend to be the famer with fun chores. This is a program your child will remember! Sessions for children age two to three run from 9:45 to 10:30 a.m. Sessions for children age three to five run from 11 to 11:45 a.m. The cost is $8 per child. Pre-paid reservations are required. An adult must attend the class with the child. For more information, call 703-437-9101.

Nature for Tiny Tots
(24-42 months) Children and parents learn together about plants and animals and their habitats through songs, crafts, and activities in this nature program at Huntley Meadows Park. Class meets from 10 to 11 a.m., and the cost is $12 per child. Topics vary each class. For more information, call 703-768-2525.

Water Critters
(2-6 yrs.) Explore the wet world of otters, crabs, turtles, frogs and fish through songs, story and a visit to a pond. Meet live turtles and frogs. This 45-minute program at Hidden Oaks Nature Center begins at 1 p.m. on August 8 and at 10 a.m. on August 22. The cost is $6 per child. Children must be accompanied by an adult. For more information, call 703-941-1065.

Useful & Edible Native Plants and Trees
(12-Adult) Come to Burke Lake Park from 9 to 11 a.m. to learn about native plants and trees in the wilderness (or your own backyard) that offer food and so much more. Find out which plants are safe to eat and those to avoid. Learn the right weeds and trees to help start a fire, get a drink, find a meal, make a rope, stop an itch or heal a wound. Explore with us the trails, fields and forests of Burke Lake Park and see what Mother Nature is growing just for you. Bring water, snack, rainwear, and wear suitable outdoor clothes and hiking boots/shoes. The cost is $23 per person, and the program runs rain or shine. For more information, call 703-323-6600.

Family Trivia Tuesdays: Summer
(5-Adult) Test your knowledge about cultural and natural history. Join us at Ellanor C. Lawrence Park for family-friendly fun as we compete at Cabell’s Mill to see who will be the park trivia champion. The subject will be the 20th century. Trivia time is 7 to 8:30 p.m. Register individually for $7 or in groups of four for $22. For more information, call 703-631-0013.

Nature for Tiny Tots
(24-42 months) Children and parents learn together about plants and animals and their habitats through songs, crafts, and activities in this nature program at Huntley Meadows Park. Class meets from 10 to 11 a.m., and the cost is $12 per child. Topics vary each class. For more information, call 703-768-2525.

Nature for Tiny Tots
(24-42 months) Children and parents learn together about plants and animals and their habitats through songs, crafts, and activities in this nature program at Huntley Meadows Park. Class meets from 10 to 11 a.m., and the cost is $12 per child. Topics vary each class. For more information, call 703-768-2525.

Flora Fauna-Summer Series
(3-6 yrs.) Join Hidden Pond Naturalists for a summer of exploration with a different topic each week. Come for one or sign up for all. The series meets from 11 to 11:45 a.m., and the cost is $5 per child for each session. Children must be accompanied by an adult. Call 703-451-9588.

Snake Feeding program
(7-Adult) Join us at Hidden Pond Nature Center for a behind-the-scenes look at the snakes at Hidden Pond. Visitors will observe the unique methods snakes use to feed. Get a glimpse of something few people get to see in the wild while learning about our local serpents and their importance to our ecosystem. Please take into consideration this program is not for everyone and may be graphic. The program runs from 5:15 to 6 p.m. and costs $5 per person. For more information, call 703-451-9588.

Amphibians After Dark
(7-Adult) Assist naturalists with a survey of amphibians by their calls from 8 to 9 p.m. at Burke Lake Park. Learn how to identify frogs and toads by their calls as we explore pools and ponds. The cost is $6 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-323-6600.

Riverside Campfire - Explore Bats and Bugs
(2-Adult) This program is great for those who love bats and bugs. As day turns to night, bats and some insects wake up. Through games and activities at Riverbend Park, learn about the relationship between night-flying bats and the insects they seek. Bring a toasting stick; s’mores are provided. The campfire program runs from 6 to 7:30 p.m. and costs $8 per person. Come early if you’d like to bring a picnic or hot dogs to toast. This event will be canceled if it rains. Please call 703-759-9018 for more information.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Come by our Visitor Center deck at Riverbend Park to watch our turtles enjoy some outdoor time. Afterwards, go on a scavenger hunt and hike around the park. The program from 4 to 5 p.m. is free! For more, call 703-759-9018.

Twilight Hilltop Tour
(Adults) Historic Huntley sits high upon a hill overlooking Hybla Valley and Huntley Meadows Park. It’s a dramatic setting made all the more stunning by the setting sun. Join us for a special tour and see the house in a different light. Light refreshments will be served afterward. The program from 7:30 to 8:30 p.m. costs $5 per person. For more information, call 703-768-2525.

31st Annual Begonia Show & Sale
(All ages) Feast your eyes on this show at Green Spring Gardens sponsored by the Potomac branch of the American Begonia Society. Be tempted with splashes of color and shape that last long after frosts have put our outdoor gardens to bed. The sale from 9 a.m. to 4:30 p.m. on Saturday and noon to 3:30 p.m. on Sunday offers a wide variety of begonias, including subtropical species. This event is free. Call 703-642-5173.

Workshop: Garden Terrarium
(16-Adult) Enjoy the outdoors by creating a beautiful, tabletop terrarium at Green Spring Gardens. Begonia enthusiast Johanna Zinn provides valuable information on this versatile genus and teaches you techniques for creating the perfect terrarium from 1 to 2:30 p.m. A container, plants, soil and care instructions will be provided. The cost is $38 per person, plus a $25 supply fee. Register for both the program and supply fee. For information, please call 703-642-5173.

Meadow Bug Hunt
(2-Adult) We’re going on a bug hunt and we’re not scared. The meadow at Ellanor C. Lawrence Park is a-buzz with life. Come capture and release amazing insects and other arthropods. Learn the secret of this special meadow habitat from 5:30 to 6:30 p.m. The cost is $5 per person. Insect jars and nets will be provided. Wear long pants and closed shoes; insect repellent is optional. Bring a field guide if you have one. Children must be accompanied by an adult registered in the program. For more, call 703-631-0013.

Evening Walk
(Adults) Join naturalist P.J. Dunn to hike the trails after dark at Huntley Meadows Park as you look and listen for owls, beavers and other night animals. The walk from 8 to 10 p.m. costs $8 per person. For more information, call 703-768-2525.

Wagon Ride-Birds, Butterflies & Blossoms
(2-Adult) Take a wagon ride scavenger hunt through the meadow at Riverbend Park from 10 to 11 a.m. Search for birds and butterflies and meet a friendly animal up close. The cost is $7 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-759-9018.

31st Annual Begonia Show & Sale
(All ages) Feast your eyes on this show at Green Spring Gardens sponsored by the Potomac branch of the American Begonia Society. Be tempted with splashes of color and shape that last long after frosts have put our outdoor gardens to bed. The sale from 9 a.m. to 4:30 p.m. on Saturday and noon to 3:30 p.m. on Sunday offers a wide variety of begonias, including subtropical species. This event is free. Call 703-642-5173.

Rain Forest Puppet Show
(3-7 yrs.) Explore the magical rain forest through a puppet show at Hidden Oaks Nature Center starring a trio of lizards and their friends. Enjoy rain forest activities such as bird watching, puddle jumping and a chameleon craft. The program from 1:30 to 2:30 p.m. costs $7 per child. Children must be accompanied by an adult. For more information, call 703-941-1065.

Powhatan’s People
(2-Adult) Discover some elements of the Algonquian culture of the Powhatan and Tauxenent Indians such as crafting stone tools, hunting and farming. End the day playing games. This program at Historic Huntley from 2 to 3:30 p.m. costs $7 per person. Call 703-768-2525 for information.

Intro to Telescopes
(10-Adult) Come to Observatory Park at Turner Farm to learn astronomy basics as well as how to set up and use your telescope. The course content depends on telescope type and includes observing selected objects in the sky using the roll-top observatory, if weather permits. You can bring your own telescope. The class from 7:30 to 8:30 p.m. costs $8 per person. For more information, call 703-324-8618.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Stop by the visitor center deck at Riverbend Park from 4 to 5 p.m. to watch our turtles enjoy some outdoor time, and then go on a scavenger hunt and hike around the park. The program is free! For more information, call 703-759-9018.

American Indian Stories Campfire
(4-Adult) Enjoy a campfire at Hidden Oaks Nature Center as you hear traditional American Indian stories and toast marshmallows from 8:15 to 9:15 p.m. The cost is $6 per person. Children must be accompanied by a registered adult. For more information, call 703-941-1065.

Celebrate Honeybee Day
(All ages) Where would we be without the honeybee? Celebrate this wondrous insect with the Northern Virginia Beekeeping Association in a free program at Green Spring Gardens from 10 a.m. to noon. Meet a beekeeper, see inside a beehive, learn a bee dance, do a bee scavenger hunt, learn how bees are important to our food supply and get tips on how you can help honeybees. For more information, call 703-642-5173.

Bread and Butter Tea
(4-Adult) Make your own fresh butter while listening to stories about the families who once lived at Historic Huntley. Teddy bears and favorite dolls are welcome to partake of the simple fare of bread and butter, fruit, homemade pot cheese, and a selection of traditional and herbal teas. The program from 1 to 2:30 p.m. costs $8 per person and includes a tour of the Historic Huntley House and grounds. For more, call 703-768-2525.

Evening Stroll
(6-Adult) A naturalist takes you on a relaxing stroll through Huntley Meadows Park at dusk to watch and listen for beavers, owls and other nocturnal residents. The stroll from 8 to 10 p.m. costs $8 per person. Children must be accompanied by a registered adult. For more, call 703-768-2525.

Grinding Demonstrations
See and hear 19th century technology at work at Colvin Run Mill. The miller will be grinding, conditions permitting, from noon to 3 p.m. Please call the site to confirm. The tour costs $7/adult, $6/ student 16+ with ID, and $5/child/senior. No reservations required. Call 703-759-2771.

Blacksmithing Demonstrations
Watch as the blacksmith fires up his forge at Colvin Run Mill and works with hammer and tongs to make iron tools and utensils. No reservations are required for this free demonstration from 11 a.m. to 4 p.m. For more information, call 703-759-2771.

Wagon Ride-Journey to the Potomac River
(2-Adult) Ride through the woods and along the Potomac River from 10 to 11 a.m. while learning about Riverbend Park’s wildlife and the American Indians who once lived here. The cost is $7 per person. Children must be accompanied by a registered adult. For more, call 703-759-9018.

Animal Feeding at the Nature Center
(3-Adult) It’s dinner time at Hidden Pond Nature Center and worms and insects are on the menu. Help our naturalist care for and feed the nature center’s animals from 4:30 to 5:30 p.m. The cost is $5 per person. For more information, call 703-451-9588.

Pohick Puddle Jumpers
(3-6 yrs.) The youngest nature lovers will enjoy hands-on and up-close indoor and outdoor activities at Hidden Pond Nature Center. Explore the Pohick Stream Valley or areas around the pond. Topics vary each week. Sessions run from 4:30 to 5:30 p.m. and cost $7 per child. Call 703-451-9588.

Turtle Pool Party
(2-Adult) Turtles like to soak and take in the sun. Stop by the visitor center deck at Riverbend Park from 4 to 5 p.m. to watch our turtles enjoy some outdoor time, and then go on a scavenger hunt and hike around the park. The program is free! For more information, call 703-759-9018.

Twilight Hilltop Tour
(Adults) Join us for a special after-hours tour of Historic Huntley from 7:30 to 8:30 p.m. and see the house in a different light. Huntley’s dramatic setting is made all the more stunning by the setting sun. Light refreshments will be served. The cost is $5 per person. Call 703-768-2525.

Riverside Campfire- Batty about Bats
(2-Adult) Learn about bats through games and activities at Riverbend Park. Bring a toasting stick for s’mores. The program from 6 to 7:30 p.m. costs $8 per person. Children must be accompanied by a registered adult. Call 703-759-9018.

Nature for Tiny Tots
(24-42 mos.) Children and their parent learn about plants, animals and habitats through songs, crafts and activities at Huntley Meadows Park. Topics vary in this monthly program. Sessions from 10 to 11 a.m. cost $10 per child. Call 703-768-2525.

Campfire Fridays: Fall
(3-Adult) Join us for a campfire, s’mores, animals and more each month this fall at Hidden Pond Nature Center. We cover a different topic and explore a different area of the park each night. The campfire program runs from 7:30 to 9 p.m., and the cost is $8 per person. Call 703-451-9588.

Virginia Indian Festival
(3-Adult) This popular Riverbend Park festival includes eight American Indian tribes from Virginia, including the Rappahannock dancers and drummers. Enjoy hands-on activities and live demonstrations including American Indian storytelling, shooting bow and arrows, throwing spears and making stone tools. You can also help build a dugout canoe and visit our marketplace of American Indian crafts, pottery and jewelry. Events begin at 10 a.m. A six-hour pass costs $7 per person in advance, $8 at the door. For more information, call 703-759-9018.

Fall Garden Day -- Plant Sale and More
(All ages) Fall is a great time to plant, and Green Spring Gardens is hosting numerous local plant and garden craft vendors to satisfy your gardening needs. A silent auction, bake sale, live music, food and kids’ activity tent add to the festivities. Come and support one of Virginia’s most innovative public gardens. Activities run from 9 a.m. to 3 p.m. Admission is free. For more information about the sale or Green Spring Gardens, call 703-642-5173.

Delicious Dairy at Historic Huntley
(2-Adult) Churn delicious butter at Historic Huntley and taste fresh cheese you can make at home. From 11 a.m. to noon, discover how Huntley, once a summer home for the wealthy, became a dairy farm. A house tour is included in the program cost of $8 per person. Call 703-768-2525.

Feeding Day
(2-Adult) Join a naturalist and youth volunteers at Ellanor C. Lawrence Park and help feed our site display animals. Make a birdfeeder to take home and use. The program from 10 to 11 a.m. costs $6 per person. Children must be accompanied by a registered adult. For more, call 703-631-0013.

Celebrate National Teddy Bear Day
(2-5 yrs.) Bring your teddy bear to Hidden Oaks Nature Center. Sing songs, make a craft and learn about Virginia’s black bears. It’s family fun for your teddy’s special day! The program from 2:30 to 3:15 p.m. costs $6 per child. Children must be accompanied by an adult. For more information, call 703-941-1065.

Fall Wildflowers ID & Art
(10-Adult) Turtlehead, jewelweed, seed box, cardinal flowers -- come see our beautiful fall wetland flowers at Huntley Meadows Park. Discover how they live and how to draw them from 10 a.m. to noon. Supplies are included in the cost of $8 per person. For more information, call 703-768-2525.

Run of the Mill
(6-Adult) Visit historic Colvin Run Mill for a hands-on program that teaches you how we clean, mill and sift grains using antique equipment. Take home a souvenir sample bag of what is milled during class. The program from 1 to 3 p.m. costs $20 per person. For more, call 703-759-2771.

Monarch Tag and Tea
(2-Adult) Sip tea, meet and tag live monarch butterflies, and then release them at Hidden Oaks Nature Center. The tea party will include sweets from the area of Mexico where the butterflies are flying. The program from 2 to 3:30 p.m. costs $15 per person. Children must be accompanied by a registered adult. For more, call 703-941-1065.

Build your own Bat House
(3-Adult) Help bats to thrive by building a bat house at Riverbend Park to hang in your yard. The program from 11 a.m. to noon costs $8 per person, and everyone must register. There is a $15 per bat house fee payable to the instructor on the day of the program. Call 703-759-9018.

Make Old-Fashioned Toys at Huntley
(4-Adult) Make simple toys to take home and play games like those enjoyed by the children who once lived at Historic Huntley. A special children’s house tour and scavenger hunt are included in the program from 2 to 3 p.m. The cost is $7 per person. For more information, call 703-768-2525.

Pohick Rangers
(8-12 yrs.) Be part of Hidden Pond’s longest-running program, Pohick Rangers. We discuss a wide range of topics, including wetland diversity, forest ecosystems, nocturnal wildlife, cultural history, insects and more. The program meets from 5 to 6:25 p.m. for eight weeks. The cost of the eight-part series is $108. Call 703-451-9588.

Pohick Rangers Junior
(6-8 yrs.) This program is similar to Hidden Pond Nature Center’s long-running Pohick Rangers program, but it’s geared toward the younger set with more story- and craft-related activities. Sessions meet from 5 to 5:55 p.m. for eight weeks. The series cost is $90. Call 703-451-9588.

Little Acorns-Fall
(2-4 yrs.) Preschoolers and an adult share nature’s wonders at Hidden Oaks Nature Center through finger plays, stories and, weather permitting, an outdoor exploration. The 45-minute programs begin at 9:45 and 11 a.m., and the cost is $6 per child. For more, call 703-941-1065.

Nature Quest-Fall
(3-7 yrs.) From field to stream and everything in between, children learn about our local animal species, hands-on and in the field at Hidden Pond Nature Center. Sessions from 10:30 to 11:30 a.m. cost $7 per child. Call 703-451-9588.

Garden Sprouts: Nature Playgroup Fall
(3-6 yrs.) Your preschooler enjoys nature-themed fun while you meet other parents one Monday a month at Green Spring Gardens. Through games, songs, activities and a garden walk, we explore different topics each month. In September, the topic is pollinators. The program from 10 to 11:30 a.m. costs $6 per child. Call 703-642-5173.

History for Small Fries
(1-5 yrs.) Bring your child for a story and craft at Sully Historic Site to discover how things were in the olden days. Through their senses, children can experience how different things smelled, looked or worked. The program from 10 to 11 a.m. costs $5 per child. Call 703-437-1794.

Teen Ranger Series
(12-16 yrs.) This series at Hidden Pond Nature Center provides hands-on experience in the activities required to maintain a nature center. Learn what it takes to care for the animals and natural areas and how to teach others. We also touch on administrative aspects of operating a nature center. The program meets from 4 to 5:25 p.m. for four weeks. The cost is $40 per person for the series. Call 703-451-9588.

Astronomical Seminar and Telescope Viewing
(9-Adult) The roll-top observatory at Turner Farm holds a class and nighttime observing session on a specific astronomical topic each month. Telescopes are used to view the objects discussed in the classroom (weather dependent). The program from 7:30 to 9 p.m. costs $15 per person. Check the Analemma Society site for topics at http://www.analemma.org. Call 703-324-8618.

History Tots: Fall
(2-3 yrs.) Bring your toddler to explore history through sight, sound, smell and touch at Ellanor C. Lawrence Park. The 45-minute monthly program includes indoor and outdoor activities, and adults must be able to participate with children. Sessions begin at 9:45 and 11 a.m., and the cost is $6 per child. In September, the topic is apples. For more information, call 703-631-0013.

Snake Feeding Program
(7-Adult) Join us at the nature center for a behind-the-scenes look at the Hidden Pond snakes. Visitors observe the unique methods snakes use to feed. Please consider that this program from 5:15 to 6 p.m. is not for everyone and may be graphic. The cost is $5 per person. For more information, call 703-451-9588.

Adopt a Woodland Wiggler: Fall
(8-12 yrs.) At Hidden Oaks Nature Center, naturalists will train participants in proper husbandry, care and feeding of a monarch caterpillar, slugs or snails, and mealworms. Each month, students receive a new animal to take home and report back the next month on their experience. The three-part series meets from 4:15 to 5:15 p.m., and the fee is $24 per child. A $20 supply fee is payable at the first class. Call 703-941-1065.

Insect Safari Series
(3-Adult) Learn about insects and investigate their ecosystems at Hidden Pond Nature Center. Find out about their behavior, life cycle, diet and habitat from 5 to 6 p.m. for three weeks. The cost of the three-part series is $24. Call 703-451-9588.

Homeschool Day
(5-12 yrs.) Bring your home school student or group to Sully Historic Site for hands-on fun learning designed to enrich understanding of Fairfax County circa 1800. The two-hour program begins at 10 a.m., and the cost is $10 per child and $5 for adult chaperones. Call 703-437-1794.

Getaway to Chanticleer Gardens, Wayne, PA
(Adults) Chanticleer Gardens in Wayne, Pennsylvania, is not to be missed with 35 acres of dynamic and creative garden displays — a beautiful blend of art and horticulture. Depart Green Spring Gardens at 7 a.m. and return at 7 p.m. The cost of $124 per person includes motor coach, entrance, guided tour and lunch. The cancelation deadline is Aug. 31. Call 703-642-5173.

Putting the Animals to Bed
(3-Adult) When evening shadows spread over Kidwell Farm, it is time to put the animals to bed. Bring your flashlight or lantern for this twilight tour at Frying Pan Farm Park, and learn how our farm animals settle down for the night. This program from 7 to 8 p.m. costs $8 per person. Dress for the weather. Children must be accompanied by a registered adult. Call 703-437-9101.

What’s Growing in the Garden?
(2-5 yrs.) Join us in the Kidwell Garden at Frying Pan Farm Park to explore what’s growing! Topics vary each week: 9/15 -Sensational Seeds; 9/22-3 Sisters in the Garden; and 9/29-We Eat Plants! Each program meets from 9:30 to 10:30 a.m. and costs $7 per child. Children must be accompanied by an adult. Call 703-437-9101.

Geology at Lake Accotink
(6-12 yrs.) Explore the world of geology as we experiment, test rocks and their hardness, and more in this hands-on class at Lake Accotink Park. Each session runs from 5 to 6 p.m. and costs $7 per person. Call 703-569-3464.

Accotink Creek Wagon Ride
(3-Adult) Explore Accotink Creek with a naturalist at Lake Accotink Park. Catch and release critters that live in the creek. This program runs from 6:30 to 7:30 p.m. on Friday and from 6 to 7 p.m. on Saturday. The cost of each session is $6 per person. Bring shoes that can get wet and an adventurous spirit. For more, call 703-569-3464.

Garden Talk: Featuring Twigs Bark and Berries
(Adults) Fall offers its own special charm. At Green Spring Gardens, Master Gardeners will show you how to create an intriguing landscape using evergreens with berries, seed heads, colorful and beautifully structured branches, bark and flowers. The program from 2 to 3 p.m. costs $10 per person. For more, call 703-642-5173.

Use Your Senses - Sensory Nature Walk
(Adults) Join a Huntley Meadows Park naturalist on a walk through the park using your senses. What can you hear if not distracted by sight? Can you smell a wetland? What can you see if you take time to look? Slow down and experience a nature walk from a different perspective. This program from 7 to 8:30 p.m. costs $7 per person. For more information, call 703-768-2525.

Amphibians After Dark
(7-Adult) Assist naturalists at Lake Fairfax Park with a calling amphibian survey. Learn how to identify frogs and toads by their calls as we explore pools and ponds from 8 to 9 p.m. The cost is $6 per person. Children must be accompanied by an adult registered in the program. For more information, call 703-471-5414.

Club Championship
(12-Adult) Players compete in an 18-hole, individual stroke tournament at Burke Lake Golf Center starting from 8 to 10 a.m. Prizes will be awarded for 1st, 2nd and 3rd place, and there will be closest-to-the-pin contests. The $35 cost includes lunch. Fees are due at time of registration. Registration begins September 2. The rain date is September 23. For more, call 703-323-1641.

Watercolor Workshop: Design & Composition
(Adults) Learn about balance, contrast movement, rhythm, emphasis, pattern and unity. Artist Marni Maree walks you through these elements as you paint at Green Spring Gardens from 9:30 a.m. to 3:30 p.m. Bring a lunch. A supply list will be emailed. The cost is $90. Call 703-642-5173.

Putting the Animals to Bed
(3-Adult) When evening shadows spread over Kidwell Farm, it is time to put the animals to bed. Bring your flashlight or lantern for this twilight tour at Frying Pan Farm Park, and learn how our farm animals settle down for the night. This program from 7 to 8 p.m. costs $8 per person. Dress for the weather. Children must be accompanied by a registered adult. Call 703-437-9101.

Family Fun: Monarch Migration Obstacle Course
(5-Adult) Learn about magnificent monarch butterflies and their migration at Green Spring Gardens from 1 to 3 p.m. Move through the obstacles in our Monarch Migration Course at your own pace, moving from egg to butterfly and beyond with games, songs and activities. The cost is $10 per person. For more information, call 703-642-5173.

Teas from Around the Globe
(16-Adult) Learn the ABC’s of tea styles as you taste white, green, oolong, black and dark teas at Colvin Run Mill. Discuss brewing and sample tea-infused treats. Take home a tea sampler. The program from 1 to 3 p.m. is presented by Certified Tea Specialist Chef Laurie Bell of Great Falls Tea Garden. The cost is $35, and reservations are required by September 13. Call 703-759-2771.

Lake Accotink History Talk-Walk
(12-Adult) Join historians and the Friends of Lake Accotink Park to learn about the origins and history of the park. Hear stories about Native Americans, the Lee family, a Civil War raid and more, and visit historic sites in the park. Wear walking shoes and bring bottled water. The free program begins at 9:30 a.m. Call 703-569-3464.

SlugFest
(3-Adult) Don’t miss the only celebration of slugs on the east coast. Come to Hidden Pond Nature Center from 2 to 3:30 p.m. for slug racing, crafts, fortune telling, skin exfoliation and slime tossing. The cost is $8 per person. Call 703-451-9588.

Catch a Critter!
(4-Adult) Grab a net to study wetland creatures up close and personal at Huntley Meadows Park. Use magnifying lenses to study the critters’ unique characteristics. This rare opportunity to dip-net in the wetland is possible with guidance of park naturalists. The program from noon to 2 p.m. costs $10 per person. Call 703-768-2525.

Evening Walk
(Adults) Join naturalist P.J. Dunn and hike the trails of Huntley Meadows Park after dark looking for nocturnal animals. The program from 6:45 to 8:45 p.m. costs $8. Call 703-768-2525.

Riverside Campfire - American Indians
(2-Adult) Play American Indian games and listen to stories ‘round the campfire at Riverbend Park. S’mores will be provided. The program from 6 to 7 p.m. costs $8 per person. Bring a toasting stick, blanket and flashlight. Call 703-759-9018.

Grinding Demonstrations
See and hear 19th century technology at work at Colvin Run Mill. The miller will be grinding, conditions permitting, from noon to 3 p.m. Please call the site to confirm. The tour costs $7/adult, $6/ student 16+ with ID, and $5/child/senior. No reservations required. Call 703-759-2771.

Life in a Pond
(2-5 yrs.) Explore the pond at Hidden Oaks Nature Center - home to turtles, dragonflies, fish, frogs and lots of plants. Meet live pond animals, hear a story, create a pond craft and visit our two small ponds from 1:30 to 2:15 p.m. The cost is $6 per child. For more information, call 703-941-1065.

Ancient Plants Sketch Hike
(13-Adult) Huntley Meadows Park is home to plants whose ancestors date back to dinosaur times. Learn about ferns, moss and their allies on a 1.5-mile hike (flat terrain) and keep a field sketch book provided by the Running Brooke Fund. This program from 1 to 3 p.m. costs $8 per person. For more information, call 703-768-2525.

Goldenrods and Asters – Fall Wildflowers
(2-Adult) Stroll along the riverbank in search of fall wildflowers at Riverbend Park and learn some of the folklore associated with the flowers. Reservations are required for the 9 to 10 a.m. program. The cost is $8 per person. Call 703-759-9018.

Little Acorns-Fall
(2-4 yrs.) Preschoolers and an adult share nature’s wonders at Hidden Oaks Nature Center through finger plays, stories and, weather permitting, an outdoor exploration. The 45-minute programs begin at 9:45 and 11 a.m., and the cost is $6 per child. For more, call 703-941-1065.

Nature for Tiny Tots
(24-42 mos.) Children and their parent learn about plants and animals through songs, crafts, and activities at Huntley Meadows Park. This eight-week series meets from 10 to 10:55 a.m., and the cost is $90. A supply fee of $5 is due to instructor at first class. For more, call 703-768-2525.

Science for Homeschoolers
(6-9 yrs.) Students will explore Huntley Meadows Park and learn about change patterns, plant characteristics, animal life needs and observation. This eight-week series meets from 2 to 4 p.m., and the cost is $121. For more information, call 703-768-2525.

Little Hands on the Farm: Fall
(2-5 yrs.) Interact with farm animals, receive a story and create a craft at Frying Pan Farm Park. Children ages two and three meet from 9:45 to 10:30 a.m.; ages three to five meet from 11 to 11:45 a.m. The cost is $8 per child. Reservations required. Adult must attend. Call 703-437-9101.

Garden Buds Playgroup
(2-3 yrs.) Meet in the Children’s Discovery Garden at Green Spring Gardens one Monday a month. Your child enjoys different sensory materials out in the garden, rain or shine. Dress for the weather . The program from 10 to 11 a.m. costs $5 per child. For more information, call 703-642-5173.

Homeschool at the Pond
(6-12 yrs.) This program at Hidden Pond Nature Center is geared toward meeting some of the homeschool science requirements. Topics vary at each session. The program from 1 to 2:30 p.m. costs $10 per child. Call 703-451-9588.

Nature Detectives
(3-5 yrs.) In this naturalist-led class at Huntley Meadows Park, children and parents explore the natural world through hikes, stories, songs, crafts and other hands-on activities. This eight-week series meets from 10 to 11:25 a.m., and the cost is $108. An additional supply fee is payable to the instructor at the first class. Call 703-768-2525.

Science for Homeschoolers
(9-12 yrs.) At Huntley Meadows Park, students investigate the interrelation between earth cycles, ecosystems and plants, and animal functions and processes at the cell level. This eight-week series meets from 2 to 4 p.m., and the cost is $121. For more information, call 703-768-2525.

Pohick Puddle Jumpers
(3-6 yrs.) The youngest nature lovers will enjoy hands-on and up-close indoor and outdoor activities at Hidden Pond Nature Center. Explore the Pohick Stream Valley or areas around the pond. Topics vary each week. Sessions run from 4:30 to 5:30 p.m. and cost $7 per child. Call 703-451-9588.

Nature Tots: Fall
(1-3 yrs.) Bring your toddler to Ellanor C. Lawrence Park to explore nature through sight, sound, smell and touch. The 45-minute programs begin at 9:45 and 11 a.m. The cost is $6 per child, and an adult must participate. The topic in September is migration. Call 703-631-0013.

Nature for Tiny Tots
(24-42 mos.) Children learn about plants and animals through songs, crafts, and activities at Huntley Meadows Park. Adult participation is required. The eight-week series meets 10 to 10:55 a.m., and the cost is $90. A supply fee of $5 is due at first class. For more, call 703-768-2525.

American Civics for Homeschoolers
(12-18 yrs.) This Freedom in America course examines freedom and other politically significant concepts and themes and the key political institutions and policies that have characterized United States political culture from the colonial period to Reconstruction. This five-part series at Historic Huntley meets from 1 to 2:55 p.m. The cost for the five sessions is $84 per student. For more, call 703-768-2525.

Jr. Farmer Family Fun: Fall
(2-Adult) Junior Farmers and their families will play an active role in taking care of Frying Pan Farm Park. Explore topics such as animal care, tinkering with farm machinery and the importance of our crops and gardens. The programs from 4 to 5 p.m. cost $7 per person. Children must be accompanied by a registered adult. For more information, call 703-437-9101.

Nature Detectives
(3-5 yrs.) During this naturalist-led class at Huntley Meadows Park, children and parents explore the natural world through hikes, stories, songs, crafts and other hands-on activities. This eight-week series meets from 1:30 to 2:55 p.m., and the cost is $108. An additional supply fee is payable to the instructor at the first class. Call 703-768-2525.

Garden Tour and Tea
(Adults) Tour the glorious demonstration gardens with a Master Gardener docent at Green Spring Gardens and get a wealth of ideas for your fall home landscape. Afterwards, enjoy a traditional English afternoon tea in the 1784 Historic House. The program from 1 to 3 p.m. costs $32 per person. Reservations required. Call 703-941-7987.

Putting the Animals to Bed
(3-Adult) When evening shadows spread over Kidwell Farm, it is time to put the animals to bed. Bring your flashlight or lantern for this twilight tour at Frying Pan Farm Park, and learn how our farm animals settle down for the night. This program from 7 to 8 p.m. costs $8 per person. Dress for the weather. Children must be accompanied by a registered adult. Call 703-437-9101.

What’s Growing in the Garden?
(2-5 yrs.) Join us in the Kidwell Garden at Frying Pan Farm Park to explore what’s growing! Topics vary each week: 9/15 -Sensational Seeds; 9/22-3 Sisters in the Garden; and 9/29-We Eat Plants! Each program meets from 9:30 to 10:30 a.m. and costs $7 per child. Children must be accompanied by an adult. Call 703-437-9101.

Geology at Lake Accotink
(6-12 yrs.) Explore the world of geology as we experiment, test rocks and their hardness, and more in this hands-on class at Lake Accotink Park. Each session runs from 5 to 6 p.m. and costs $7 per person. Call 703-569-3464.

Walney Time Travel: Peach Cobbler Campfire
(4-Adult) Bring your appetite to Ellanor C. Lawrence Park as interpreters dressed in period attire demonstrate cooking a peach cobbler using a Dutch oven. The program from 7 to 8:30 p.m. costs $10 per person. Children must be accompanied by a registered adult. Call 703-631-0013.

Astronomy for Family Fun: Moon
(6-Adult) Learn about the moon at Hidden Oaks Nature Center as we do fun activities and crafts that help demystify the moon and bring it down to earth. The program from 8 to 9 p.m. costs $6 per person. Children must be accompanied by a registered adult. For more, call 703-941-1065.

Fall Equinox Campfire
(2-Adult) Celebrate the autumnal equinox with a campfire at Riverbend Park. Learn the scientific, astronomical, and cultural significance of this special day. The program from 6 to 7 p.m. costs $8 per person. Children must be accompanied by a registered adult. This event will be canceled if it rains. For more information, call 703-759-9018.

Putting the Animals to Bed
(3-Adult) When evening shadows spread over Kidwell Farm, it is time to put the animals to bed. Bring your flashlight or lantern for this twilight tour at Frying Pan Farm Park, and learn how our farm animals settle down for the night. This program from 7 to 8 p.m. costs $8 per person. Dress for the weather. Children must be accompanied by a registered adult. Call 703-437-9101.

Civil War Encampment Weekend
(All ages) Federal and Confederate troops recreate Civil War daily life at Sully Historic Site as reenactors demonstrate the work of the army. Skirmishes each day include infantry, artillery and cavalry. Visit the weekend encampment and tour the house. See artifacts rarely on exhibit belonging to the Haight family -- mid-19th century residents at Sully. Hours are 10 a.m. to 4 p.m. on Saturday and 10 a.m. to 3 p.m. on Sunday. The cost is: $9 for adults; $7 for seniors and children. For more information, call 703-437-1794.

Gardening with the Soil Food Web
(Adults) Having a beautiful garden starts at the ground level. Biologist and gardener Paulette Royt explains soil science basics so you understand how soil composition and living soil organisms impact your garden. This program at Green Spring Gardens runs from 10 to 11:30 a.m. The cost is $15 per person. Call 703-642-5173 for more information.

Junior/Parent Tournament
(7-Adult) Teams of two players compete in an 18-hole scramble format at Burke Lake Golf Center from 8 a.m. to noon. There will be closest-to-the-pin contests and prizes for 1st, 2nd and 3rd place teams in two age divisions: Adult/Jr. 7-12; Adult/Jr. 13-17. Registration begins September 9 and will be limited to the first 48 teams. The cost is $65 per team and includes lunch. The rain date is September 30. Call 703- 323-1641.

The Life and Gardens of Beatrix Farrand
(Adults) Emmy Award winner Karyl Evans screens her new documentary film about the brilliant career and unconventional life of 20th century landscape gardener Beatrix Farrand, who designed magnificent gardens for wealthy clients and institutions. This screening at Green Spring Gardens is followed by a Q&A with the filmmaker and refreshments on the lawn of Farrand’s designed landscape at Green Spring. The program from 2 to 4 p.m. costs $20. Call 703-941-7987.

Ice Cream at Historic Huntley
(2-Adult) Make and enjoy hand-cranked ice cream as Huntley’s Harris family may have done. Learn how the histories of ice cream and Huntley follow a similar path from elite luxury to family fare. A tour of the ice well and Historic Huntley House are included in the program from 11 a.m. to noon. The cost is $8 per person. Call 703-768-2525.

Hands-On Harvest
(2-Adult) Join us for a garden tour through time and a chance to help staff and volunteers harvest the gardens at Ellanor C. Lawrence Park. Dig for fall crops such as greens, broccoli, and squash. The program from 1 to 2:30 p.m. costs $10 per person. For more information, call 703-631-0013.

My Sky Tonight!
(3-5 yrs.) Preschoolers are full of questions about the world around them. Bring them to Hidden Oaks Nature Center to get some answers. Join a naturalist to explore the wonders of the night sky with activities, stories and a craft. The 45-minute program begins at 7:30 p.m., and the cost is $5 per child. Children must be accompanied by an adult. For more information, call 703-941-1065.

Park Paws
(16-Adult) Calling all dogs! Bring your owners to learn park etiquette while exploring Hidden Pond Nature Center’s back trails. Dogs must play well with others and be accompanied by an adult. The one-hour program begins at 10 a.m., and the cost is $5 per person. Call 703-451-9588.

Bear Campfire
(3-Adult) Have you seen a bear in Fairfax County? Identify bear habitat and life cycles and learn to be a good bear neighbor. Take home a paw print! Enjoy a campfire and s’mores; bring your own hot dogs. The program runs from 8 to 10 p.m. at Burke Lake Park and Lake Fairfax Park. The cost is $10 per person, and children must be accompanied by a registered adult. For more on the program at Burke Lake, call 703-323-6600. For more on Lake Fairfax, call 703-471-5414.

Civil War Encampment Weekend
(All ages) Federal and Confederate troops recreate Civil War daily life at Sully Historic Site as reenactors demonstrate the work of the army. Skirmishes each day include infantry, artillery and cavalry. Visit the weekend encampment and tour the house. See artifacts rarely on exhibit belonging to the Haight family -- mid-19th century residents at Sully. Hours are 10 a.m. to 4 p.m. on Saturday and 10 a.m. to 3 p.m. on Sunday. The cost is: $9 for adults; $7 for seniors and children. For more information, call 703-437-1794.

Run of the Mill
(6-Adult) Visit historic Colvin Run Mill for a hands-on program that teaches you how we clean, mill and sift grains using antique equipment. Take home a souvenir sample bag of what is milled during class. The program from 1 to 3 p.m. costs $20 per person. For more, call 703-759-2771.

Garden Program: Winter Edibles
(Adults) There are many edible plants that grow best in cooler weather. Try your hand at growing them and enjoy the fruits or veggies of your labor during the winter months. Washington Gardener Magazine publisher Kathy Jentz covers techniques for lengthening the growing season in a program at Green Spring Gardens from 2 to 3 p.m. The cost is $15 per person. For more information, call 703-642-5173.

Monarch and More
(4-Adult) Learn to identify monarch and other butterflies, discover their fascinating life cycle and assist with tagging monarchs, when available, at Hidden Oaks Nature Center. Visit a Monarch waystation and native butterfly garden. Learn about the monarch migration phenomenon and its challenges and how you can make a difference. If available, at least one monarch will be tagged during the program. The program from 1:30 to 2:30 p.m. costs $6 per person. Children must be accompanied by a registered adult. For more information, call 703-941-1065.

The Truth about Toadstools
(16-Adult) Learn all about mushrooms: how and when they grow, the different types, identification tips and where to find them. This program from 10 a.m. to noon includes an indoor workshop followed by a guided walk at Huntley Meadows Park. The cost is $8 per person. For more information, call 703-768-2525.

Reptile Survey
(7-Adult) Assist a naturalist with a reptile survey at Lake Accotink Park. Learn the habits and habitats of the aggressive but misunderstood water snakes as we search for them and document their size, gender and location. Wear shoes that can get wet. This program from 9 to 10 a.m. costs $6 per person. Children must be accompanied by a registered adult. For more, call 703-569-3464.

Little Acorns-Fall
(2-4 yrs.) Preschoolers and an adult share nature’s wonders at Hidden Oaks Nature Center through finger plays, stories and, weather permitting, an outdoor exploration. The 45-minute programs begin at 9:45 and 11 a.m., and the cost is $6 per child. For more, call 703-941-1065.

Nature Quest-Fall
(3-7 yrs.) From field to stream and everything in between, children learn about our local animal species, hands-on and in the field at Hidden Pond Nature Center. Sessions from 10:30 to 11:30 a.m. cost $7 per child. Call 703-451-9588.

Little Hands on the Farm: Fall
(2-5 yrs.) Interact with farm animals, receive a story and create a craft at Frying Pan Farm Park. Children ages two and three meet from 9:45 to 10:30 a.m.; ages three to five meet from 11 to 11:45 a.m. The cost is $8 per child. Reservations required. Adult must attend. Call 703-437-9101.

Science for Homeschoolers
(12-14 yrs.) This course at Huntley Meadows Park involves lectures with an emphasis on hands-on field work studying natural sciences. Learn about aquatic ecosystems, energy and matter in the ecosystems, how humans impact the natural world, and the many different interactions of living things from microbes to large mammals. Students participate in field work related to soil studies, biodiversity studies, plant and animal studies, and wetlands studies. This six-week series meets from 4 to 5:55 p.m., and the cost is $106. For more information, call 703-768-2525.

Family Fun Night at the Telescope
(6-Adult) Have you ever wondered about the objects that make up our universe? Bring your family to Observatory Park at Turner Farm and take a guided tour to see the color of stars, open and globular clusters, nebulae and galaxies. This program from 7:30 to 8:30 p.m. costs $6 per person. Children must be accompanied by a registered adult. For more, call 703-324-8618.

Snakes, Turtles and Toads
(5-8 yrs.) Through hands-on activities, nature “safari” hikes and visits with live animals, students will investigate local reptile and amphibian characteristics and habits at Hidden Oaks Nature Center. In this five-part program, students will focus on identification skills and habitat recognition. Sessions meet from 4:15 to 5:10 p.m. The series cost is $44 per child. Call 703-941-1065.

Kids Korner-Fall
(3-5 yrs.) Preschoolers explore nature or history each month, accompanied by an adult, at Ellanor C. Lawrence Park. An outdoor activity and craft are included in the program from 10 to 11 a.m. The topic in September is monarch butterflies, and the cost is $6 per child. Call 703-631-0013.

Jr. Farmer Family Fun: Fall
(2-Adult) Junior Farmers and their families will play an active role in taking care of Frying Pan Farm Park. Explore topics such as animal care, tinkering with farm machinery and the importance of our crops and gardens. The programs from 4 to 5 p.m. cost $7 per person. Children must be accompanied by a registered adult. For more information, call 703-437-9101.

Homeschool at the Lake
(6-12 yrs.) This program for school children at Lake Accotink Park focuses on the natural and historical world. Different topics and hands-on activities are covered at each session. The program runs from 1 to 2 p.m., and the cost is $7 per person. The topic in September is stream life. For more information, call 703-569-3464.

What’s Growing in the Garden?
(2-5 yrs.) Join us in the Kidwell Garden at Frying Pan Farm Park to explore what’s growing! Topics vary each week: 9/15 -Sensational Seeds; 9/22-3 Sisters in the Garden; and 9/29-We Eat Plants! Each program meets from 9:30 to 10:30 a.m. and costs $7 per child. Children must be accompanied by an adult. Call 703-437-9101.

Geology at Lake Accotink
(6-12 yrs.) Explore the world of geology as we experiment, test rocks and their hardness, and more in this hands-on class at Lake Accotink Park. Each session runs from 5 to 6 p.m. and costs $7 per person. Call 703-569-3464.

Homeschool Wilderness Skills
(7-12 yrs.) Make fires, build shelters and learn about wild and medicinal plants as we explore how to survive in the wilderness. Hikes, games and art projects add to our adventures at Huntley Meadows Park. This six-week series meets from 2 to 3:55 p.m., and the cost is $106. Any supply fee is payable to the instructor at class. For more information, call 703-768-2525.

STEAM Nature Sleuths
(4-6 yrs.) We introduce early learners to STEAM education (Science, Technology, Engineering, Arts and Math) concepts through hands-on investigations and experiments with a naturalist at Huntley Meadows Park. This six-week series meets from 10 to 11: 55 a.m., and the cost is $106. For more information, call 703-768-2525.

Nature Journaling
(7-12 yrs.) Nature journaling is a fun, creative way to remember what you see outdoors with sketches, photos, thoughts and impressions. Try some simple field sketching exercises outdoors for landscapes and plants from 4:15 to 5:10 p.m. at Hidden Oaks Nature Center. Learn some tips and tricks as we experiment with colored pencils, pastels, watercolors and various plain and colored papers. The five-part series costs $44 per person. A short supply list will be sent before class begins, and there is a $5 supply fee payable to the instructor. For more, call 703-941-1065.

Garden Talk: Replace Old Shrubs
(Adults) Is it time to replace those overgrown and tired-looking shrubs? Join us at Green Spring Gardens and learn the Master Gardener adage: right plant, right place. You can’t go wrong if you follow our guidelines for selecting the right shrub for your garden. The program from 2 to 3 p.m. costs $10 per person. Call 703-642-5173.

Raptor Stay or Fly Campfire
(4-Adult) Meet live raptors at Ellanor C. Lawrence Park as we explore different strategies for surviving winter. Enjoy s’mores, too. The program from 7 to 8:30 p.m. costs $10 per person. For more information, call 703-631-0013.

People of the Pohick
(6-Adult) Come to Hidden Pond Nature Center and learn about the people who have lived in the Pohick stream valley. Discover skills they needed to survive and the challenges they faced in nature. The program from 5 to 6 p.m. costs $7 per person. Sessions will be held in September and October with different topics. For more information, call 703-451-9588.

Starlight Compass Night Hike
(5-Adult) Before GPS, travelers used the stars to guide their way. Find out what celestial navigation is, learn some of its history and try it out in an exploratory activity around Frying Pan Farm Park. Finish with a short hike to look at the stars. This program from 6 to 7 p.m. costs $7 per person. Children must be accompanied by a registered adult. For more information, call 703-437-9101.

Accotink Creek Wagon Ride
(3-Adult) Explore Accotink Creek with a naturalist at Lake Accotink Park. Catch and release critters that live in the creek. This program runs from 6:30 to 7:30 p.m. on Friday and from 6 to 7 p.m. on Saturday. The cost of each session is $6 per person. Bring shoes that can get wet and an adventurous spirit. For more, call 703-569-3464.

Predators of the Pond
(6-Adult) Discover and learn about the pond predators lurking in the Pohick Stream Valley at Hidden Pond Nature Center. Find out what they prefer to eat, where they live and how humans have an impact on their environment. The program from 11 a.m. to noon costs $7 per person. For more information, call 703-451-9588.

Pirate Treasure Hunt
(3-Adult) Follow a treasure map at Hidden Oaks Nature Center to collect clues and natural treasures along half-mile woodland and stream trails. Friendly pirate naturalists share nature’s wonders, including live animals, plants, rocks and life under logs. Make a craft, too. The program from 2 to 4 p.m. costs $7 per person. Groups leave every 15 minutes, and children must be accompanied by a registered adult. This event will be canceled in the event of heavy rain. For more information, call 703-941-1065.

Floral Design Workshop: Fall Floral
 (Adults) Enjoy autumn’s rich colors and textures by bringing them into your home. Come to Green Spring Gardens from 9:30 to 11 a.m. to learn how to create a unique, take-home floral design that celebrates the season with the help of professional floral designer Betty Ann Galway. Advance registration for the program and supply fee are required. The program is $38, and the supply fee is $25 per person. For more, call 703-941-7987.

Garden Program: Start a Garden Journal
(Adults) Need help organizing your garden? Start a garden journal. Come to Green Spring Gardens and learn techniques for keeping notes, photos, and plant tags of your garden successes, garden edits and to-do lists. Horticulturist Judy Zatsick shares the journal she uses at Green Spring Gardens that helps her track garden tasks and plans. Simple or detailed, a garden journal will take you to the next gardening level. This program from 10 to 11 a.m. costs $15 per person. For more information, call 703-642-5173.