C130-History and Time

This material covers numerous topics related to the passage of time, such as our geologic time scale that names the periods in Earth's evolution. We divide our history into two parts now called the Common Era (CE) and Before Common Era (BCE), previously called AD and BC (and still used by many). The evolution of calendars has an interesting history.

The material covers the ages of the Universe and Earth and gives students suggestions for dealing with alternative views.

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