1. Environmental Footprint Teachable Unit By Elizabeth, Nancy, Mike, Nathan, Fallyn June 16-18, 2008

2. Brainstorming Engage media3.guzer.com/pictures/homers_brain.jpg How do Humans impact the environment?

3. Brainstorming Engage What contributes to pollution? http://en.wikipedia.org/wiki/Image:Snpp.gif

4. Impact of Car Purchasing Choice teachable tidbit Learning Objective:  Analyzing the environmental impact of purchasing a car through graphing data http://girtby.net/images/homer-car.gif

5. Exploration Activity Economic comparison of cars  How would you decide which car to buy? Instructions  Create a line graph for your given data set comparing costs in thousands of dollars (Y-axis) versus time in years (X-axis)

6. Graphing Data (Example) CARPURCHASE PRICE MILES PER GALLON A$16,00023 Assume: Gas Price= $4. 50 per gallon Drive 12,000 miles per year

7. Graphing Data Assume: Gas Price= $4. 50 per gallon Drive 12,000 miles per year CARPURCHASE PRICE MILES PER GALLON B$23,00044 C$10,00020 D$7,00014

8. Results Explain Which car would you pick? Why? Car A (Green Line): C(t)=2355t+16,000 Car B (Red Line): C(t)= 1230t+23,000 Car C (Blue Line): C(t)=2700t+10,000 Car D (Yellow Line): C(t)=3855t+7,000 priceprice Time

9. A: 2007 Scion tC B: 2008 Civic Hybrid C: 2002 Ford MustangD: 1998 Jeep Grand Cherokee

10. Environmental Statistics Elaborate CARCARBON EMISSIONS PER YEAR (Kg) Scion tC4538.8 Civic Hybrid2485.6 Mustang5220.0 Jeep7457.1

11. http://www.footprintnetwork.org/gfn_sub.php?content=global_footprint

13. Evaluation Would you change your mind, now accounting for the environmental impact?

14. Some Interesting Facts… Driving your car for 3.75 miles (assuming 39 mpg) produces 1kg of CO 2 Flying in a plane for 1.375 miles produces 1kg of CO2 Making 2 plastic bottles or 5 plastic bags produces 1kg of CO2 Producing 1 American cheeseburger produces 3.1 kg of CO2 Timeforchange.org