# Clip 2/16: Introduction - Part B

## Overview

In this clip, a student attempts to define multiplication.

## Teacher Commentary

I launch the lesson with the big idea that a picture is worth one thousand words and a road map of the day's lesson and goals: using math pictures to tell a word story, representing multiplication, and representing division. Because this is not my classroom of students, I take the time to revisit protocols for active listening and mental math.