Tagged: Cambrian Explosion

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Earth Science: Earth’s Geologic Timeline

We spent about a week learning about Earth’s four eons and most recent eras.  Today I wanted to share several of the activities we did to go along with this part of our unit. As you may recall, we reviewed the planets in the Solar System, talked about the age of the Earth (4.6 Billion years)  and did an impressionistic activity to show how short human history actually is compared to...