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Find out what it would be like to have ears shaped differently from your own! Design and make different animal ears then try them out.

In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.

In this lab (Activity #1 on page), learners explore how we see color.

In this design challenge activity, learners build a four-stringed instrument that can play a tune.

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