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This design challenge is an open-ended exploration of linkages, a group of parts connected by hinges, and the types of motion they can create.

This marine biology activity (on pages 11-17) introduces learners to kelp (seaweed) forests that grow in the ocean and are home to many species of sea animals.

In this activity, young learners use different-sized paper 'caterpillars' and various household items to predict and measure their height.

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

This activity (on pages 38-43) has learners simulate the way scientists track and map the movement of otters in the wild using radio trackers.