SpringBots: 3-in-1 Spring-Powered Robots zebras and purple

and purple

and 155 building pieces

Defy the laws of grab-ity with Newton

Good luck and remember money can’t buy you love but it can buy you expensive things to give them to others so that they like you

SpringBots: 3-in-1 Spring-Powered Robots zebras and purpleBuild a motorized robot, race car, and countdown timer all that run without any batteries or electrical power! The secret behind these fascinating machines is a power source called a mainspring a spiral shaped spring that stores up energy when wound up by hand, and then converts that stored energy back into motion when it discharges. The mainspring inside the robot turns gears which enable it to march forward on two legs. The race car zooms across the