Geologic Time Scale Teacher Resources
Find Geologic Time Scale educational ideas and activities
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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
AP: Chapter 25: Phylogeny and Systematics
As a review or note taking guide, this resource wraps up a unit on the tree of life. Biology bigwigs define phylogeny and answer questions about the subsequent classification of organisms. The activity takes a straightforward and orderly...
9th - 12th Science