Before the activity, each student needs:

• Pre-Activity Reading
• Pre-Activity Worksheet
• pen or pencil

Each student needs:

• computer with Microsoft® Excel® spreadsheet application; alternatively, use Google Sheets
• CO₂ Activity Worksheet OR O₃ Activity Worksheet, and its respective accompanying data set, CO₂ Case Study Data OR O₃ Case Study Data
• Excel Reference Sheet
• Vocabulary List
• Connecting to the Big Picture Handout