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In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

Learners compare a life-size drawing of a Tyrannosaurus rex head and a full-size Sinornithosaurus body to understand that dinosaurs varied in size.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.

In this activity, learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.