Curated OER
Using Radioactive Decay to Determine Geologic Age
Learners investigae using radioactive decay to determine geologic age.
Curated OER
Relative Aging Study Guide
In this relative aging activity, students define relative time and absolute time and define the laws and "rules" related to studying the age of fossils and rocks.
Curated OER
Relative Aging Study Guide
In this relative age worksheet, students define relative time and absolute time and define the laws and rules of determining the age of rocks and fossils.
Curated OER
My Time
Middle schoolers create a timeline of their lives. For this timeline lesson, students discuss relative and absolute time. They use events in their lives to create categories on a timeline. They link this lesson to geologic timelines.