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

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, 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.