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4 Mini Goo cups with lids
Learn about the mineral specimens in the manual
A great way to learn about first animals together
• Ages 3+
Leftover gel can be stored in resealable bags for use later
SpringBots: 3-in-1 Spring Powered Machines friends tv show game 4 Mini Goo cups withBuild 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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