Differentiation Strategic groups with strong speakers. Allow students to have small group discussions with the questions in step 4 before sharing to the whole class. Modifications Have students read text as individuals and then ask their partners questions about what they read. Extending the Learning Ask students to listen to or read other popular media about Charles Keeling. Tell students that the Keeling Curve graph is an important graph that scientists use to understand carbon dioxide concentrations in the atmosphere. But why is it so important? We will learn the answer to this question throughout the unit.
