Students create a scale model time linen of the Earth's 4.6 billion year history. They calculate a scale that can fit on a very long register tape then label each geologic era. They use text books to annotate each era with major geologic...

Students create a scale model of the different eras, periods, and epochs of Earth's 4.6 billion year history. In addition to different time periods, other major events will also be added to the model from fabricated radioactive decay...

Students study the terms paleontology and archaeology and examine how they can help us learn about prehistoric Native Iowans.  In this archaeology lesson students discuss these terms and view a video on Native Americans.