I saw this Christmas tree graph in a classroom years and years ago. I wish I could remember the teacher's name, because I'd gladly give her credit. Anyway, a child's decorated ornament goes on the tree once their own Christmas tree is up. (I don't mean to be a Scrooge, but I'll be lucky if my ornament ever makes it up there.) I haven't always done this next part, but ornaments can be removed after Christmas break when each child's Christmas tree comes down. By the way, interactive writing was our tool for writing the words you see.