Practice subtraction of single digit numbers using pictures. The key idea is to visualize subtraction as a take away problem. For example, to visualize 4 - 2, students are shown 4 pictures with 2 crossed out. They can count all uncrossed picture to arrive at the result.

Common Core Alignment

1.OA.1Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.