Amazon.com: LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height : Pat Murphy and the Scientists of Klutz Labs: Toys & Games
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This is the first "creation in the Klutz lego Chain Reactions book Already teaches about axels ramps friction etc! Takes about 10 minut… | Lego camp, Lego, Fortnite
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