Wonderology &ndash; Science Kit &ndash; Grow-a-Geode Wonderology is the kid friendly science line that makes learning a blast! Explore the mysteries of science like never before! Now kids can grow 3 realistic Geodes and put their crystal creations on display! Learn all about how Geodes are formed and teach others. The Wonderology Grow-a-Geode is made for Young Scientists ages 8+. Includes: 3 Geode Shells, 1 Packet of sodium Dihydrogen Phosphate powder, 1 Bottle of red liquid dye, 1 Instruction guide