Displaying items 13 - 14 of 14
Super Absorbent Clear Polymer SpheresSuper Absorbent Clear Polymer Spheres
Soak in water and these spheres grow 300 times their size! After a while out of water, evaporation will dry out and shrink the spheres again. Spheres are made from a chemical known as super absorbent polymer (or SAP). NC-13815
$9.95
Thames and Kosmos Glow Stick LabThames and Kosmos Glow Stick Lab
Want to make some awesome glow sticks that shine in cool colors under UV lights and that glow in the dark? With this kit, you can make five different glowing concoctions using the included materials and materials from around your house. Then, learn why they glow! Ages 8+. NC-13992
$19.95

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