# Ratio and Proportional Relationships Lesson Plan Series Assessment

## Assessment Objectives

**The assessment is aligned to the Common Core State Standards for Mathematics – Grade 6 – Ratio and Proportional Relationships**

**6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.**

**6.RP.2 Understand the concept of a unit rate a/b associated with a ration a:b with b 0, and use rate language in the context of a ratio relationship.**

**6.RP.3 Use ratio and rate reasoning to solve real world and mathematical problems.**

**6.RP.3a Make tables of equivalent ratio relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios.**

**6.RP.3b Solve unit rate problems, including those involving unit pricing and constant speed.**

**6.RP.3c Find a percent of a quantity as a rate per 100; solve problems involving finding the whole, given a part and the percent.**

**6.RP.3d Use ratio reasoning to convert measurement units; manipulate and transform units appropriately when multiplying or dividing quantities.**

## Materials Required

- Graph paper
- Calculator

## Independent Work

1. Write a ratio to show the relationship between 4 wheels on a car and 1 steering wheel in a car. Provide the three different ways the ratio can be written.

2. Write a description and an explanation for the ratio of 7 red blocks to 5 blue blocks.

3. A package containing 5 neon markers cost $4.95. What is the cost of one marker?

4. A package containing 12 highlighters cost $4.80. What is the cost of one highlighter?

5. Use rate language to describe the ratio relationship between the two quantities. *Emily paid $3.60 for a package of 24 mechanical pencils.*

6. On the table below, show the cost for each of the number of dry erase markers. *One dry erase marker cost $0.60.*

On the coordinate plane below, plot the pairs of values.

8. The ratio of correct answers to the total questions on the test is 80 to 100. There were a total of 15 questions on the test. How many questions were answered correctly?

9. Of the 1,300 children in the local school, 12% of the children in the school are left-handed. How many children are left handed?

10. Write the ratio to show the relationship between ounces and pounds. Provide the three different ways the ratio can be written.

16 ounces = 1 pound

11. How many ounces are equal to 3 pounds?

12. How many pounds are equal to 80 ounces?

## Answers

1. 4 to 1, 4:1, 4/1

2. The ratio of red blocks to blue blocks is 7:5, because for every 7 red blocks there are 5 blue blocks.

3. $0.99

4. $.40

5. Emily paid $3.60 for 24 mechanical pencils, so $0.15 was the cost of 1 mechanical pencil.

8. 12 questions

9. 156 children are left handed

10. 16 to 1, 16 : 1, 16/1

11. 48 ounces

12. 5 pounds