Find the hidden message

If you want to see more on this activity, visit: http://www.monroecounty.gov/p/des-AmericaRecycleTeacherBook.pdf 

Adapted from: http://www.monroecounty.gov/p/des-AmericaRecycleTeacherBook.pdf and http://thesmartshoplearning.blogspot.com/2012_05_01_archive.html