This is a great motivator for students to learn the letters and their sounds. Set a day for the children to have learned to recognize the letters names and sounds by and celebrate by having an ice cream party. The children will get the ingredients that they have earned over the time you set the goal for.
Write your student's name in the appropriate column with a marker/sharpie. When the student has learned the name and sound of the letter have them cross it off! They are in charge of their learning. My students would get so excited when they could cross off a letter.