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In this health and genetics activity, learners determine whether tasting the bitter compound PTC (phenylthiocarbamide) influences which vegetables a person likes.

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

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

In this two-part activity, learners will extract their own DNA from their cheek cells and learn how DNA is analyzed and used to solve crimes.