I have a commercial number line in my third grade classroom that only goes up to 100. I really would like to make my own and I heard about making one with a clothesline and even involving the students in placing the numbers on the line. Does anyone else do this? If so, can you explain how it is done? One problem that I would have with involving the children is that I would have to hang the clothesline high up due to closets. I would appreciate any help. Thanks!