Summarize and share findings with the class. Identify major characteristics of each geologic era. Describe how fossils provide important evidence of how life and environmental conditions have changed. Explore research and career opportunities in the field of geology. Use mathematics in all aspects of scientific inquiry.
Some scientists work in teams, and some work alone, but all communicate extensively with others.
B. View and complete LAB simulation and LAB worksheets from the laser disc. C. Use follow-up class discussion about fossils and the fossil record. 2- Constructing a Geologic Time Graph A. Construct a circle graph that shows approximately how long each of the Earth's geologic eras lasted. To do this, divide the era length by the age of the earth, then multiply by 100. Using the percentages you recorded, draw and label a circle graph of the Earth's history in geologic time.