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In this activity (on pages 41-47 of PDF), learners explore tesselating geometric patterns (repeated shapes, similar to the art of M.C. Escher).

In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

In this activity (on pages 15-18 of PDF), learners make a life-size two-dimensional paper model of their own skeletons.

Learners create an Incan counting device called a quipu (pronounced kee-poo).

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.