Module 1: Stories of the Past (How Do We Know? The Discovery of Deep Time):

Earth Science Essentials

How Do We Know? The Discovery of Deep Time

This unit provides opportunity to practice reading earth's stories through consideration of historical studies of the Grand Canyon. Individual lessons will open in a new page--simply close the page when done and return here.

• Extra Resources: How Do We Know--Discovering Deep Time


• Extra Resources: How Do We Know--Discovering Deep Time Walk Through


• Extra Resources: Implications of Deep Time. Writing exercise.

10/27/2017--pictures and text copyright Russ Colson