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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 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.

Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.

In this activity, learners explore how an electromagnet works by making a simple one. Using this knowledge, learners design a diagram to make a working speaker using household materials.