(5-10 yrs.) Learn about rocks and minerals, including sedimentary, metamorphic and igneous rock types. This program also covers fossil formation, weathering, chemical reactions and human uses of rocks and minerals. Most of the program is held indoors, but experiments at some sessions will be conducted outdoors. This four-week series at Hidden Pond Nature Center runs from 5 to 6 p.m. The cost is $43. For more information, call 703-451-9588.
Registration: Register Online