# Clip 5/13: Standard 2: Reason Abstractly & Quantitatively Using Fractions Part 2B

## Overview

*Mathematically proficient students make sense of quantities and their relationships in problem situations…considering the units involved; attending to the meaning of quantities, not just how to compute them; and knowing and flexibly using different properties of operations and objects.*

After her 4th- and 5th-grade students’ initial sorting process, Erika Isomura reminds them that they’ve been working with bar model representations. She asks them to make sure the pictures match the stories.