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In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

In this activity, learners compare the ways of life of Plains Native Americans who hunted and moved frequently to follow the buffalo herds, and Native Americans who farmed and lived in more permanent

This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms.

In this archaeology meets art activity, learners make a mosaic and consider the ways in which art communicates.

In this activity on page 8 of the PDF (Behind the Scenes with Chemistry), learners make three of Harry Potter's essential school supplies: quills, ink, and color-changing paper.

In this activity, learners use chemistry to produce weathered "antiqued" paper with burned edges. Learners first soak white paper in coffee and then apply a charring solution of ammonium chloride.