3 differentiated worksheets. (s - support, c - core, e - extension) that go with Year 4 D2 unit. All are perimeter worksheets, with pictures of room plans to illustrate the idea of perimeter. The worksheets use my 2 pet ferrets Scampi and George to bring the idea alive! My class know all about them. This could easily be changed to 2 other charaacters are ommitted altogether though. Please leave me a comment if you find this sheet useful!