Assessment
The worksheets in this Activity do not come with accompanying annotated worksheets. This is because the choices students make in this Activity will vary from student to student, and there are no correct or incorrect answers. The purpose of the Activity is to show that there is variation in how we use carbon, not that there is a correct or incorrect way to use carbon.
Tips
Point out to students that the unit of measurement for CO2 is pounds, whereas the unit of measurement for electricity is kilowatt hours. These are different units of measurement! One kilowatt hour does not always produce the same amount of CO2.