The document is a series of lesson notes for a mathematics class on ratios and unit rates. It includes examples of setting up ratio tables and writing equations to represent relationships described in various word problems involving ratios between different quantities. Students are asked to add total columns to ratio tables, complete ratio tables for different scenarios, write equations to model relationships, and explain how the value of a ratio can be seen in both a ratio table and equation. The document provides guidance, examples, and exit ticket questions for students to solidify their understanding of using ratios and creating equivalent ratios and equations.