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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 design their own board games.

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

In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

This design challenge is an open-ended exploration of linkages, a group of parts connected by hinges, and the types of motion they can create.

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

In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.

In this design activity, learners create a vehicle that can transport a load, like a favorite toy or as a recycled object, from the top of a zipline to the bottom using only gravity.

This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells of

In this activity, learners will imagine the challenges and opportunities of asteroid mining.