Earth Science SOL ES.9 states that students should interpret the history of the Earth from fossils. In theory this is easy, but may take years to be proficient at identifying index fossils and getting their geologic age. I have created an app that allows students to measure fossils,  get their identity down to the genus level and their geologic age, in under 5 minutes! The app also can calculate the surface are of the shells. 

The videos in Virtual Virginia provide a general overview of Relative and Absolute Geologic Time. this lesson plan is intended to give students data to analyze and interpret to reconstruct the geologic history or rocks in Virginia for the Early to Middle Paleozoic. For more information contact: Dr. William Schmachtenberg, email: william.schmachtenberg@frco.k12.va.us