Instructional Video

A Brief History of Geologic Time

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This A Brief History of Geologic Time instructional video also includes:

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 history. Then, it explains each in greater detail mentioning the biggest one or two highlights for each.

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CCSS: Adaptable
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Instructional Ideas
  • Have pupils copy the graphic at 2:49 into their science journals
  • Use a string that goes around the classroom and label each time to offer perspective
Classroom Considerations
  • Assumes some prior knowledge of the history of Earth and various time periods
  • This video is hosted on YouTube
  • Offers a long list of excellent references
  • Provides subtitles in English for English language learners
  • Upbeat presenter helps maintain pupil focus
  • None