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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

This activity models some of the ways natural processes, such as erosion and sediment pollution, affect Earth’s landscape.

In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

In this activity (on pages 29-35), learners examine water pollution and filtration.