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

In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room.

In this activity, learners will build a roller coaster for a marble to run on using everyday household materials such as paper towel or toilet paper rolls, cups, boxes, books, buckets, chairs, etc.

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 dynamic activity, learners build a catapult that launches projectiles, such as marshmallows.