11th+12th+Environmental+Science

Beginning the project with a visit to the 5th graders and their "How many is 7 billion" display/demonstration - 12th graders can help grade? Follow up with a twitter competition - in 140 characters or less tell why the issue is important. 5th grade can judge 12th graders and 12th graders can judge 5th graders! LINKS [|World of 7 Billion Website]