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This activity (on pages 16-23) lets learners measure each other's vital signs—the signs that help doctors understand what's going on in a patient body.

In this activity (on pages 34-39), learners make a fairly detailed model of DNA using licorice and gumdrops.

This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.

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.

In this activity (on pages 9-14), learners dissect a real flower -- the kind of work botanists do.

This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.