A quick lesson check or general review of the concept 1 more, 1 less. Can be used to teach before verse after, relating to children's everyday lives. I have used it both as an exit slip, but also a good review for the beginning of the year to see what kids know when it comes to number sense. Includes a number line with numbers 1 - 20. More and Less words are colored coded - easy to differentiate for different learners!