TEACHERS CLASSPACK
TK 659127 CLASSPACK of 5 Glowing Crystals Kits. Save $4.00 each, total saving $20.00.
Grow phosphorescent crystals that glow in the dark! Experiment with growing crystals of different sizes. Learn about why crystals form, what crystal lattice structure is, and what makes these crystals glow. Ages 8 and up.