 Here is how a teacher might use I do, we do, you do in a math lesson about subtraction. First, during the I do section, the teacher explains how subtraction works and demonstrates by showing seven pencils and taking four away. The teacher shows a few different examples to make sure the students understand. Next, during the we do section, the teacher and students work together on several subtraction problems using pencils or other objects. Then, during the you do section, the students practice doing subtraction with objects on their own.