Curated OER
Toilet Paper Geologic Time Scale
Students examine and demonstrate the extent of geologic time compared to recent time. They develop a demonstration of geologic time using an unrolled roll of toilet paper, with each sheet of toilet paper representing 20 million years.
Curated OER
Earth History Part I
Eighth graders simulate geologic time using toilet tissue capture activity. In this earth science lesson plan, 8th graders identify the different characteristics of Paleozoic and Precambrian era. They hypothesize how old the Earth is.