SpringBots 3-in-1 Spring-Powered Machines mini food T-rex rules

T-rex rules

and arrange them any way they want

for ages birth-3 yrs

The awesome eco-design has no metal axles

Thor Leonberger is 19" tall

SpringBots 3-in-1 Spring-Powered Machines mini food T-rex rulesHow cool is it that the mainspring stores energy, then converts it to motion? Discover the physics of potential and kinetic energy and the inner workings of gears and springs as you assemble the different mechanical devices. No batteries or electricity required, these models are self powered and super cool. Follow the detailed instructions and you'll wind up winding up a robot, racecar, and timer. From Thames & Kosmos, for ages 6 12 yrs. Watch the