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In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.

In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.

Learners make their own simple slide rules out of paper and learn how they work.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

In this activity, learners design a device to solve a problem: how to get a ball out of a drain pipe.

In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.