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

In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

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

In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

In this engineering activity, learners design their own board games.

In this activity on page 7 of the PDF, learners explore how engineers characterize building materials.

In this design challenge, learners build a boat that paddles itself using a rubber band as its power source.