Persuasive Writing Workshop http://teacher.scholastic.com/activities/writing/minilessons.asp?topic=Persuasive#
Persuasive Essay: Environmental Issues http://www.dnr.state.wi.us/org/caer/ce/eek/index.htm
http://www.epa.gov/students/
http://epa.gov/climatechange/kids/index.html
Letter Writing Generator http://readwritethink.org/materials/letter_generator/