Keva: Contraptions Reactions Slime & Putty Discover the mesmerizing flow of

Discover the mesmerizing flow of immiscible liquids with the Science Museum of Minnesota Oil Timer

This Insects 20 oz Mega Mug is covered in detailed illustrations of beetles

Glow-in-the-dark ink reveals dinosaur skeletons after lights out

A vibrant scene filled with planets

Kendi had been pondering the same ever since he became a teacher--but the question became more personal and urgent when he found out his partner

Keva: Contraptions Reactions Slime & Putty Discover the mesmerizing flow ofGet the fun rolling with this unique set that includes traditional KEVA planks, special colored planks and a variety of unique pieces to set off chain reactions. Builders can set up their contraptions to cause reactions like ringing a bell, knocking over a bowling pin and more. Build a course and see if the pieces react as you predict!