Earth Time Scale
This Earth Time Scale lesson plan also includes:
Students research the past eras in history including the Precambrian, Paleozoic, Mesozoic and the Cenozoic. In this time scale lesson students take part in a lab that allows the students a better understanding of the timeline of these eras.
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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
New Review A Brief History of Geologic Time
How do scientists know the history of Earth before humans—or any mammals—existed? An epic "Eons" series video explains the larger history of geologic time. It highlights the eons, eras, periods, epochs, and ages scientists use to divide...
12 mins 6th - 12th Science CCSS: Adaptable