CrunchLabs by Mark Rober The Crunchinator
A hand-cranked crusher that shows how gears multiply force
Chunky magnetic bars and balls that show attract and repel.
Best for kids who are just starting to build and explore magnets.
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Oversized magnetic bars click onto steel balls to make shapes, bridges and towers. The bars are color-coded so kids discover by feel that some pairs snap together and others push apart, an early hands-on look at magnetic poles.
Always follow the manufacturer’s age and safety guidance. Small parts may be a choking hazard for children under 3.
A hand-cranked crusher that shows how gears multiply force
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