This is not your ordinary sphere. By lightly grabbing two ends of this sphere and pulling, you can make it expand over 10 times in volume. And with glow-in-the-dark capabilities, you can enjoy the Hoberman Sphere in the dark. You can play catch with it, amaze your friends, even put it over your head. The sphere makes a great gift for both kids and adults, or for anyone who enjoys fascinating gadgets.
Find the hidden crystals when you open your own geodes from this fun set.
Explore the wonders of wind power with this amazing kit!
Build your own 10 inch kaleidoscope with this great kit!
This black scorpion specimen is great for the classroom setting!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
This kit will get your paper plane ready for takeoff!