Help your Grades 6-8 students learn and review Geologic Time Scale with this illustrated flash card and activity set. Picture cards for terms like Geologic Time, Eon, Era, Period, Epoch, Fossil, Extinction and Evolution make the vocabulary easy to see and remember, and practice pages ask students to write the correct word from each definition. It works well in learning centers, for small-group review or as an early-finisher activity.