The Big Idea
What is a ratio and when are two ratios equivalent?
Ratios and Proportions / What is a Ratio?
Grade Level 6
Activity 1 of 15
This lesson helps students to understand that ratios associate two or more quantities that vary together.
Planning and Resources
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
Downloads
Lesson Snapshot
Understanding
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.
What to look for
Students should explore how changing the ratio of circles to squares affects corresponding equivalent ratios.Sample Assessment
Which of the following pairs of ratios are equivalent?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
