Hot Ice Crystals by Thames and Kosmos Bruder hanging out with this gray

hanging out with this gray stuffed anklyosaurus is incredibly fun and rewarding

Build a windmill with moving parts or a giraffe on Safari

The random-cut pieces add an element of intrigue

A soft and snuggly

converting motion into electricity

Hot Ice Crystals by Thames and Kosmos Bruder hanging out with this grayThese amazing crystals form instantly out of a sodium acetate solution. They look like ice but they release heat upon formation. Use the solution to mold a beautiful crystalline polar bear and seal. Create an elegant crystal castle with shimmering spires. Learn about the chemical reaction that makes this happen. These amazing crystals are formed instantly out of a sodium acetate solution Ages 8+, includes a full color 16 page instruction manual and