Curated OER
Geologic Age
Learners investigate radioactivity as a tool for measuring geologic time and how geologists use this information to determine the absolute age of rocks or minerals.
Curated OER
Mud Fossils
Students observe real fossils. In this science lesson, students make their own mud fossils by pressing material into the mud and letting it dry in the sun for 3-4 days. Students then get the fossils out displaying their mud fossils.