This Instructional Activity is a part of the Lesson 5, Unit 2, Grade 7. The theme continues by asking students to make sense of the two rates associated with a given proportional relationship. Here, students are asked to reason from an equation rather than a table, although they may find it helpful to create a table or graph. In this particular example, students work with both number of gallons per minute and number of minutes per gallon. Monitor for students who are using different ways to decide if the cooler was filling faster before or after the flow rate was changed.