Investigation Steps

Step 1. Ask Questions

Students identify and discuss the issue or problem and begin to gather background information.
Time required: 2 class periods

Step 2. Plan Approach to Inquiry

Students view and analyze global CO₂ data. Following this introduction, they use an interactive model to explore plants' role in the carbon cycle. 
Time required: 4 class periods

Step 3. Conduct Investigations and Analyze Data

Students conduct their investigation and prepare to communicate ideas. 
Time required: 4 class periods

Step 4. Construct Response and Communicate with Others

Students prepare and communicate their responses to the lesson's central question. 
Time required: 2 class periods