Curated OER
Understanding the Geologic Timescale
Students identify and analyze how the geologic time scale was developed by investigating 11 periods of time and the vast expanse of time of the Earth's existence. They study their period, determine the important factors indicative to...
Curated OER
How Old Is Illinois?
High schoolers use fossils found in rocks to determine the age of the strata between Rock Island and Chicago. Pupils pretend they are geologists. They must determine the age of all rock layers between the Mississippi River and Lake...
Curated OER
Discovering Fossils
Students dig for and discover fossils in a classroom setting. They dig on a tarp to find, map, assemble, and photograph their discoveries.
Curated OER
Determining Age Of Rocks And Fossils
Students discuss together how to determine the relative age of each of the rock units in the block diagram (Figure 1). After students have decided how to establish the relative age of each rock unit, they should list them under the block.
Curated OER
Earth's Rotation Changes and the Length of the Day
In this Earth's rotation and day length worksheet, students are given a table with the period of geological time, the age of the Earth and the total days per year. Students calculate the number of hours per day in each geological era,...
Curated OER
No bones About It -A Mosasaur
Learners model a paleontologist's activities. They identify dinosaur bones and reassemble them into a skeleton of an extinct reptile.