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

In this activity on page 11 of the PDF, learners follow simple steps to recycle old newspaper into new paper.

This activity (on pages 38-43) has learners simulate the way scientists track and map the movement of otters in the wild using radio trackers.

In this activity, learners examine nanoscale structures of common things.