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In this invention challenge activity, learners create an indoor game for one or two people that gets you moving.

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

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.

In this hands-on activity, learners build their own kaleidoscopes and explore how light can reflect of off surfaces such as mirrors, to produce beautiful patterns.

In this design challenge activity follow up to "Kicking Machine", learners add a hands-free feature to their Kicking Machine.

In this design challenge activity, learners build a car that uses a battery-operated motor to "drive" at least ten feet.