It’s easy to grow large, amazingly beautiful crystals! Choose emerald green, aquamarine blue, or citrine yellow. Each kit includes a bag of crystal-growing chemicals, a crystal-growing cup, a base rock, and instructions. Nontoxic. Ages 10 and up. Learn More
Excavate genuine semi-precious gemstones and minerals, and then identify your treasure using the included guide! Learn how rocks and minerals are formed. Test specimens for hardness and streak. Set includes block containing multiple stones, mallet, dowel, and goggles. Ages 8 and up.
WARNING: Choking hazard. Small parts. Not for children under 3 years.
Build and listen to this working radio without batteries or electricity of any kind. Complete with tuning coil, antennas, and earphone. No soldering required. Instructions included.
WARNING: Choking hazard. Small parts. Not for children under 3 years. Learn More
This hands-on activity makes learning fun, creating a sense of adventure with every step. Produce an exciting, realistic volcanic eruption with everything you need provided in the kit. Set includes volcano substructure, volcano-making compound, erupting mix, and instructions. A bottle-and-tube system delivers the eruption from inside the volcano while you control its force with just light hand pressure. Learn More