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Learn · Illustrative Mathematics · Grade 6 · Unit 2

Introducing Ratios

Short lessons you can play with. Build ratios from shapes, make batches of recipes, mix paint, and line up double number lines, then check yourself. When you’re ready, practice in Mix Masters.

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For grown-ups

How it works

Six short chapters follow the unit’s lessons in order. Each step shows one idea with something to change, then a quick check. A wrong answer names the likely mistake and gives one more try.

The tools from class

Diagrams of shapes, recipe batches, double number lines, tables of equivalent ratios, and tape diagrams, the same ways of showing ratios the unit uses.

Practice

Each chapter ends with a link to the matching station in Mix Masters, the practice game for this unit. Progress is saved on this device.

Not covered

Lesson 17 (A Fermi Problem) is an open-ended estimation project, so it works better in class.