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Geologic Time Scale: 10 cm, calendar, clock

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How old is Earth? How big is 1 million years compared to 1 billion years? Students will use three models to organize geologic time and practice cross multiplication to solve for a variable.

Lesson Grade Level

8th Grade

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This STEAM lesson is ideal for Tucson/Pima County Middle School Students who can participate in the annual KIDStruction building contest but you can also duplicate many of the learning opportunities