Superabsorbent Crystals
Grow piles of jelly crystals that absorb 300 times their weight in water. Plus, the polyacrylamide gel crystals are reusable-let them dry out and they return to their original shape and size. Instructions include intriguing science activities that make great hands-on science projects for students. Crystals are non-toxic and environmentally safe.

Grade Level: PreK, K, 1 and up