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So there’s no stressful competition
4 Mini Goo cups with lids
Bright enough to be seen in daylight
Leftover gel can be stored in resealable bags for use later
and creativity challenges
SpringBots: 3-in-1 Spring Powered Machines friends tv show game So there’s no stressful competitionBuild 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
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