This Earth Day Math Mystery Differentiated Bundle contains all of the grade versions for the Case of the Litterbug available (Grades K-6). This bundle is excellent if you need to differentiate within your classroom because the clues are interchangeable between the 2nd - 6th-grade editions; use the Kindergarten and 1st-grade mystery as a whole separately because they are structured differently. You may also find this a useful option to customize this math mystery to better suit your class. Easy