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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

In this activity, learners explore the history, design and motion of spinning tops. Learners work in teams of "engineers" to design and build their own tops out of everyday items.

Experiment with friction and make bearings for a whirligig! This activity is a nice introduction to friction and bearings and demonstrates why bearings are useful for spinning.