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...
Columbus City Schools
The Mystery of Earth’s History
Every living creature can leave a fossil record, yet most fossils belong to extinct organisms rather than ones currently living. Scholars learn about dating rock layers, fossils, and the environment of the past. Pupils understand that...
Curated OER
Who Was Here First? Relative Dating
Students read about and complete question activities for the topic of relative dating. For this relative dating lesson, students read information for the topic and then complete two activities to further their understanding of geologic...
Curated OER
Geologic Time: Relative and Absolute Dating
Young scholars investigate relative and absolute dating; determine the difference between the two dating systems; and apply this knowledge by creating a geologic timetable of their own.
Curated OER
A Phylogenetic Perspective for the Cladistically Challenged
Students use M&Ms to simulate radioactive decay of elements.