The Mystery Stick is mysterious indeed! Vibrations produced by rubbing the notches in the stick can be controlled to make a second, smaller stick attached to the end twist clockwise or counterclockwise, creating a bizarre, fascinating, and, dare we say it, mysterious, effect. Have fun with your friends by making it appear that the small stick changes direction in response to a spoken word or phrase.
Build 14 assorted solar robots, some of which can travel over water!
This magic bird defies gravity before your very eyes!
This project book and sample kit introduces you to shape-memory alloy technology!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
This caffeine molecule mug makes an excellent gift!
This top of the line 21 inch tall Galileo thermometer features 10 floating spheres.