2: Introducing Ratios Last updated Save as PDF Page ID 35054 Illustrative Mathematics OpenUp Resources Section 9: What are Ratios? 9.1: Introducing Ratios and Ratio Language 9.2: Representing Ratios with Diagrams Section 10: Equivalent Ratios 10.1: Recipes 10.2: Color Mixtures 10.3: Defining Equivalent Ratios Section 11: Representing Equivalent Ratios 11.1: Introducing Double Number Line Diagrams 11.2: Creating Double Number Line Diagrams 11.3: Constant Speed 11.4: Comparing Situations by Examining Ratios Section 12: Solving Ratio and Rate Problems 12.1: Representing Ratios with Tables 12.2: Navigating a Table of Equivalent Ratios 12.3: Tables and Double Number Line Diagrams 12.4: Solving Equivalent Ratio Problems Section 13: Part-Part-Whole Ratios 13.1: Part-Part-Whole Ratios 13.2: Solving More Ratio Problems Section 14: Let's Put it to Work 14.1: A Fermi Problem 14.2: How Much for One?