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
LEGO Chain Reactions | MindWare
Chain Reaction | STEAM Park Lesson Plan
LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height