1. If using the PowerPoint for this lesson, review to check formatting on your computer. It might be necessary to change font or font size to appear correctly on your computer. To use as a classroom presentation, appropriate slide numbers are indicated in parentheses under Procedures.

2. Check that the computer system can play the video on the MEECS Climate Change Resource DVD.

3. Create Evidence of Change Data and Global Temperature and Carbon Dioxide transparency masters.

4. Make copies of Graphing Temperature and Carbon Dioxide in the 20th century and Graphing Temperature and Carbon Dioxide over the last 450,000 years (student activities) for each student.