Spring Bots 3 in 1 Spring Powered Machines
+ 3-in-1 engineering kit: build three self-powered models, then wind them up and watch them go!
+ Learn about potential and kinetic energy and how gears and springs function in different mechanical devices.
+ Race car drives up to 45 feet.
+ Robot walks on two legs, up to 20 inches.
+ Timer counts down from up to 6 minutes.
+ No batteries or electricity required
EXPECTED TO BE IN EARLY DECEMBER
+ 3-in-1 engineering kit: build three self-powered models, then wind them up and watch them go!
+ Learn about potential and kinetic energy and how gears and springs function in different mechanical devices.
+ Race car drives up to 45 feet.
+ Robot walks on two legs, up to 20 inches.
+ Timer counts down from up to 6 minutes.
+ No batteries or electricity required
EXPECTED TO BE IN EARLY DECEMBER