• The final carbon cycle model includes 6 arrows directly related to our everyday life:
  

a. Industry and cars to the atmosphere (burning fossil fuels)
b. Atmosphere to trees (photosynthesis)
c. Trees to animals (food web)
d. Animals and plants to the atmosphere (respiration)
e. Household energy use (burning fossil fuels and electricity)

• Each group chooses an arrow, and the teacher assigns them a second arrow (any pair is possible except for industry/transportation and household energy use. The teacher should make sure that every arrow is addressed by at least one group.
• The groups will get reading material/links to videos/podcasts for each of the arrows on which they are focusing.
• The students’ goal is to use the materials they receive to identify possible ways of changing the amount of carbon/CO2 transferred along their arrows, with the goal of decreasing the amount of CO2 in the atmosphere and thereby decreasing climate change. These solutions should be listed in a table.
• These solutions should address three levels of action: personal (including family), social (school, community, state/country), and new and efficient technologies, at least one solution for each level of action.
• The advantages and weaknesses for each solution should be described, at least one advantage and one weakness for each level of the solution.
• Each group submits to the teacher their group table. The teacher can give a bonus to students who found several solutions and/or several advantages and weaknesses to their solutions.
• The teacher calls on the different groups to present a sample of their solutions, including the advantages and weaknesses, allowing other groups to respond.
• The teacher gives the students a master table (prepared for the teacher in advance), which includes the solutions at the different levels and their advantages and weaknesses, for each arrow.
• In pairs, students compose a recommendation which solution or combination of solutions seems best to them, accompanied by a justification, and submit it to the teacher.