This is meant to be a self-contained workshop lesson on how Earth’s history is broken down into eons, eras, periods, and epochs by the Geologic Time Scale. This lesson is just an introduction to the idea of these divisions. It does not go into detail about any of the specific eras, periods, or epochs. During the mini-lesson you will make sure that students know the necessary vocabulary and that they understand why the Geologic Time Scale was created. The working portion of the class will involve students creating their own timeline of Earth’s history using a chart listing various eras, periods, and epochs. Finally, the debriefing will consist of comparing the various timelines for accuracy and discussing the role of the Geologic Time Scale in science. Two versions of an assessment are also included for measuring student understanding.
The module also includes a reading passage and questions for re-teaching or for students who are absent for the class instruction.
Again, the module does not cover what happened during specific eras, periods, or epochs.
This lesson is designed for 5th through 10th graders and includes all necessary keys.