# Clip 17/29: Standard 1: Making Sense and Perseverance Using Linear Functions Problem 2A

## Overview

*They can understand the approaches of others to solving complex problems and identify correspondences between different approaches.*

Cecilio Dimas leads a lesson on constructing, communicating, and evaluating student-generated tables while making comparisons between three different financial plans, helping students use multiple representations of mathematical problems: verbal, tabular, graphical, and algebraic generalization. In this clip, Dimas asks his students to examine a table comparing DVD rental plans, and ask themselves, “Does this make mathematical sense? Why or why not?” This clip is also indicative of standard 3 (construct viable arguments and critique the reasoning of others).