About This

• Build and race 10 mousetrap cars: Kids build a car powered by a single mousetrap and watch stored energy snap into motion, then test how far it travels.
• Everything for a class of 10: One box builds 10 cars with plastic wheels, laser-cut wood, mousetraps, string, dowels, and zip ties. Parts come sorted and ready to hand out, no extra purchases. No batteries needed.
• Real physics, hands-on learning: Kids see kinetic energy and friction at work and tweak the build to go farther. Runs as a design-and-test engineering challenge in a class period.
• Reusable, not disposable: The wheels, wood, and mousetraps come apart and rebuild for the next class, so you buy it once and run it again and again.
• Illustrated instructions by a U.S. educator: Full-color step-by-step guide written by a project-based educator, with teacher notes and troubleshooting tips to keep the activity moving.