Surprise-attack your friends with something out-of-this-world! The Alien Attack Sling Shot features two extra-stretchy aliens of varying colors and oversized hands. Just lock their wrists into place on either end of the slingshot, pull back, and fire your fearless extraterrestrial friends toward your target! Grab a few and have a slingshot fight with your friends!
This is a classic demonstration toy of the powers of magnetic fields!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Easily assemble a working alarm motion detector!
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
Build 14 assorted solar robots, some of which can travel over water!