This math bundle focuses on counting one less than. It is interactive and engaging which helps your students establish strong number sense skills. Understanding one less than is important for understanding subtraction.PLEASE NOTE: I aim for students to understand how to count one less than 2-5. (1 is not included because I didn't teach number 0 yet.) All the printables are based on 2-5 (with the answers 1-4). The number sense activities include an interactive mini-book, worksheets, exit tickets,