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Resource library Teaching materials Evolution 101

Lesson summary for:
A Long Time

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Overview:
The teacher puts up a timeline that shows students' age relative to geologic time.

Author/Source:
Janulaw, Sharon

Grade level:
K-2

Time:
20 minutes

Concepts:
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.

  • Life has been on Earth a long time.

Teacher background:

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