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In this activity, learners will review the functions of basic digestive organs, understand how diet affects digestion, understand how digestive tracks may differ, and then step outside to compare the

In this simulation, learners act out each digestive function of the organs, tissues, and cells in the digestive tract.

In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.

In this "gross" activity (on pages 34-46), learners make a life-size model of a human digestive tract, and follow the life of a beef tapeworm as it makes its way through.