Object:
Several sheets of paper with the following math problems printed on them: 5+5=, 12-2=, 3+7=, 15-5=, 2+8=
You are going to have to think this morning in order to help me with our lesson. Let's see how we do with these problems. Can you give me the answers? (Hold up the problems, one at a time, and offer any help that may be needed.)
Did you notice anything about these problems? (Children respond.) Even though we had a lot of problems to solve, they all had the same answer. The problems were all different, but the answer was always the same.