# 2.c.6. Classroom documentary

#### 1. MAKING SUMS OF TEN

In grades 3 and 4, students solve missing number equations, like **3 + __ = 12** and **__ + 5 = 8**.

When solving such simple, unrelated problems, students do not have opportunities to experience the beauty of math patterns and relationships. How might we provide a better mathematical experience for students?

One approach is to engage students with problems such as **__ + __ = 10** and **__ + __ < 10**.

Students get lots of practice solving missing number problems. But they also get lots of practice exploring patterns and representing relationships. The videos below show how this was done in two grade 3/4 classrooms.