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Using indirect methods, learners determine the shape and size of a piece of carpet hidden under a piece of plywood.

In this online activity, learners see simulations of how processes shape the Earth, and see estimates of how long these processes take.

In this computer science activity about finite-state automaton (on page 45 of the PDF), learners use a map and choose various pathways to find Treasure Island.

Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.