I teach PreK and enjoy doing the 100 days activies. One of the activities I like to do is have three sizes of bear cut outs for the students to color. Then we connect all 100 bears that are the same size together. We then have 3 rows of bears. We compare the length of each row so the students can see what a difference size make. I use a full page image for the large bear, a half page for the medium bear about a 2″ size image for the small bear.