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Bounce In Space
---Get Ready to Enter the Amazing Planet of Physics-Learning Action!
---Over 210 pcs Challenging Kits to Build N Launch into Chain Reaction
---Inspires by STEM Concept through Hands-On Experiment
---Learning About Potential and Kinetic Energy;
---Building your Own Amusement Track; Fascinating Marbles Bouncing; Creating a Never-Ending Cycle
---Requires 2 x "AAA" batteries, not included