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In this engineering challenge, learners design and build a crane out of cardboard to see how heavy a load it can lift.

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

In this activity, learners explore the concept of friction and how ball bearings reduce friction.

In this activity, learners build their own construction cranes using tongue depressors and pushpins.

In this engineering activity, learners design and build a mechanical arm to lift a small item.