Free Teaching Materials, Data Sheets, Labels and More for a Special Education Classroom (resource room, autism classroom or self-contained classroom). Bookmark this site. It has so many useful downloads ready at a click of a button. A big time and money saver. Go to: http://www.autismclassroom.com/index.php/merchandise/materials
Great perimeter activity for all ages. Using non-standards units of measure is a great way to build number sense and generalize concepts beyond the use of conventional methods. I am sorry there is no link to follow or read more, but I think this picture speaks for itself. Any teacher could easily set this up in their classroom and develop a quick data collecting sheet to compare the end results of different students' perimeters.