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Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.

This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document.

In this geometry activity, learners explore networks painted on playgrounds, such as a four square court, and draw their own.

In ancient Chaco Canyon, the people used a "sun dagger" petroglyph to mark the passing of seasons.

In this group activity, learners make multi-sided polygons with string.

Do you have an extra portable cassette tape player hanging around?

In this activity, learners build bridges out of newspaper and tape to explore how structures are designed to bear loads.

In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.