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Learners set up books with rubber bands stretched between the books. When two identical books are stretched apart and released, they move back toward each other an equal distance.

In this activity, learners observe the moon each night for a month and draw their observations in a Moon Watch Log.

Put the math of measurement, numbers, and everyday life into improvisational skits.

This magic trick is based on how computers detect and correct data errors.

In this quick activity (page 1 of the PDF under SciGirls Activity: Tug O' War), learners will test how many pennies a flat paper index card bridging the gap between two stacks of books is able to supp