This site provides a brief overview of the Precambrian Era and provides a clickable chart that breaks down this era into five different time frames. A lot of info is provided on each of the five.

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Additional Tags

beginning of time, precambrian era, archaean, geological time, hadean, mesoproterozoic, neoproterozoic, paleoproterozoic, university of california museum of paleontology, early organizms, formation of the earth

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Classroom Considerations

Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)

NGSS

View 8,305 other resources for 9th - 10th Grade Earth Science