NATIONAL GEOGRAPHIC NEW Amazing Worm Chemistry Kit Stem

Allows children to conduct five experiments exploring polymer science.  Experiments include making glow-in-the-dark worms, color-changing worms, and worm eggs.  Includes green sodium alginate, color-changing sodium alginate, calcium chloride, zinc sulfide, experiment cups, and a measuring spoon.  A detailed experiment guide provides step-by-step instructions and scientific insight.  Recommended for ages 8 and up with adult supervision.