Students examine the concept of radioactive dating. In this radioactive dating lesson, students investigate how to determine the ages of fossils and rocks as they learn about half-life radioactive decay.

Learners 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...

Students use M&Ms to simulate radioactive decay of elements.

Young scholars explore different ways geological time can be measured: comparing the time dimensions for each method, the mechanisms of each method, and the materials used.

Young scholars record data, make observations, and share in experimentation and discussion of numerical experiments.