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# Unit 2: Introducing ratios

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## About this unit

In this unit, students learn to understand and use the terms “ratio,” “rate,” “equivalent ratios,” “per,” “at this rate,” “constant speed,” and “constant rate,” and to recognize when two ratios are or are not equivalent. They represent ratios as expressions, and represent equivalent ratios with double number line diagrams, tape diagrams, and tables. They use these terms and representations in reasoning about situations involving color mixtures, recipes, unit pricing, and constant speed.

### Practice

- Basic ratiosGet 5 of 7 questions to level up!

### Learn

- No videos or articles available in this lesson

### Practice

- Equivalent ratios with equal groupsGet 3 of 4 questions to level up!

### Practice

- Equivalent ratios in the real worldGet 3 of 4 questions to level up!

### Practice

- Equivalent ratiosGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

- No videos or articles available in this lesson

### Practice

- Create double number linesGet 3 of 4 questions to level up!

### Learn

- No videos or articles available in this lesson

### Practice

- Ratios with double number linesGet 3 of 4 questions to level up!

### Learn

- No videos or articles available in this lesson

### Practice

- Unit ratesGet 5 of 7 questions to level up!
- Understand equivalent ratios in the real worldGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Practice

- Equivalent ratio word problemsGet 3 of 4 questions to level up!
- Ratio tablesGet 3 of 4 questions to level up!
- Rate problemsGet 3 of 4 questions to level up!

### Learn

- No videos or articles available in this lesson

### Practice

- Relate double number lines and ratio tablesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

- No videos or articles available in this lesson

### Practice

- Part-part-whole ratiosGet 3 of 4 questions to level up!

### Practice

- Ratios with tape diagramsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

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Level up on all the skills in this unit and collect up to 1,400 Mastery points!