NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Check out this amazing renewable energy science kit featuring the wonders of hydroelectric power!
View the glory of space with this hi-tech telescope set!
Every kid needs one of these spheres!
Discover how solar cells make electricity with this awesome kit!
With this cool electronic kit you get to assemble your own mini electric guitar!