Do you use Scott Foresman? Do you use the word building activities? This is one of the sets of letters that the Scott Foresman book uses to practice word building. I never had time to hunt out the specific magnetic letters for each of my students to use during whole group word building. So I created these letter boxes, I give each student a strip of the letters and they simply cut on the black line to separate the letters. While they are cutting I am getting my letters ready on the board and together I lead them through the word building activities as suggested in the teacher's edition. I have students come up to the board/computer and drag the letters down to make it more interactive, we practice saying the sounds slowly, and then fast like a word aloud. My first graders loved it! I don't do this everyday that's why I only have on set of letters for each story in Scott Foresman. It gets boring if we do everyday aloud, sometimes I use it small group, or without the cut out letters.