Defy gravity with this cool balancing eagle!
Build your own windmill generator kit by recycling a plastic bottle!
This science kit is an essential introduction to physics knowledge!
This is a great clean heat demonstration model for the classroom setting!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Build a model green house and 9 other green energy-related devices with this great kit!