#### The Big Idea

What is a ratio and when are two ratios equivalent?

Grade Level 6

Activity 1 of 15

This lesson helps students to understand that ratios associate two or more quantities that vary together.

**Objectives**

Students should understand and be able to explain that ratios are an association of two or more quantities.

**Vocabulary**

ratio

equivalent ratio

Standard:
Search Standards Alignment

What is a ratio and when are two ratios equivalent?

The questions introduce students to the concept of a ratio as paired quantities that vary together in the same relationship. This leads to the notion of equivalent ratios.

a. 6:3 and 5:10

b. 6:3 and 3:6

c. 6:3 and 12:6

d. 3:1½ and 6:3

Answer: c and d