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In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

In this activity, learners work in groups to create a time line representing significant moments in their lives.

In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet.

In this activity, learners discover how artists start with a skeleton and turn it into a realistic drawing of a dinosaur.