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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 engineering activity (page 3 of PDF), young learners investigate how a pole can be made stable by “planting” its base in the ground or adding supports to the base.

Make your own "Dance Dance Revolution" dance pad! In this design challenge activity, learners work in teams to build a dance pad that lets you use your feet to sound a buzzer or flash a light.

In this design challenge activity, learners invent a convenient way for someone using crutches or a wheelchair to carry small personal items.

In this health activity, learners create a device so that they not only feel their heartbeat, but also see it, using a straw and some clay.

In this challenge, learners make a helium balloon hover in one spot and then move it through an obstacle course using air currents.

In this outdoor water activity, learners explore evaporation by painting with water and tracing puddles. Learners will discover that wet things become dry as the water evaporates.