Geologic Time Scale Teacher Resources
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Worksheet: How Do We Know How Old Earth Is?
A short reading passage about types of evidence used to estimate Earth's age is provided before giving junior geologists a research assignment. They define petrology, stratigraphy, and paleoontology. They describe the job of a geologist...
6th - 9th Science
Time's a Ticking: The Earth's Geologic Time Scale
Eighth graders assess a given statement whether it's a fact or fiction. In this earth science instructional activity, 8th graders research to make the false statements true. They compare the Earth's geologic scale to common everyday items.