In this self-directed math lesson on 10 More and 10 Less, your 1st grade students will learn how to quickly count by tens, and add & subtract by tens. Activities in this guided lesson include skip counting, using pictures to add add and subtract, a fun mystery coloring page, and more! This self-guided math lesson is great for independent work. It can also be used in stations, for centers, for homework, and for differentiation. In this PDF, you will get 12 printable pages:12 student activity