Students will stamp, write, or use letter tiles to fill in the missing words. This can be a literacy center or an assessment. Each page has two sets (six sets in all -each focuses on a different vowel /a/ /e/ /I/ /o/ /u/ and a combination). I made this differentiated by having one page with the picture and no letters given and an identical page that has a letter already filled in to give a little extra help. The third page of each set has an answer key that the students can use if you would like for it to be a self-checking center. One page has two sets of words.