Sound waves will not travel through a vacuum. Prove it with this demonstration of a ringing bell inside a sealed glass jar. As air is gradually vacuumed out of the jar, the bell will become faint, and will eventually become silent. Great demonstration model for the classroom setting.
Build a magnetic levitating train with this science fair project kit!
Build over 100 exciting electronic projects with this easy to use kit!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Exciting magnet exploration for ages 8 and up!
This classic device is used to demonstrate the conservation of mechanical energy.