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In this activity, learners will explore how and why weight distribution works.

In this activity, learners will explore pi and the mathematical relationships between a circle's diameter, circumference, and radius.

In this activity, learners explore center of gravity, or balance point, of stacked blocks.

In this mathematics activity (page 4 of the PDF), learners will explore the relationship between the diameter and circumference of an object.

In this activity, learners will explore how product barcodes are scanned accurately and be able to "guess" the last number in a 13 digit barcode correctly every time.

This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this activity, learners build a scale model of the solar system using a roll of toilet paper.