Interpreting Graphs & Diagrams

The Great Lakes


The Great Lakes

How big do you think the Great Lakes are? To get an idea, open the Great Lakes interactive and drag the Great Lakes to the state of your choice.

  • Estimate which has a greater surface area, the Great Lakes or the state of your choice.
  • Estimate the surface area of all the Great Lakes combined.

After you’ve made your estimates, explain your thinking to your partner.

Discuss the following with your classmates.

  • What information do you need to know in order to calculate the volume of water in the Great Lakes?
  • How would you go about finding that information?