# Ch 45: 8th Grade Math: Rates, Ratios & Proportions

The fun and practical videos in this chapter show 8th graders about rates, ratios and proportions. There are also short lesson quizzes and a chapter exam for you to use to determine what your students have retained.

## Rates, Ratios & Proportions - Chapter Summary

Utilize the video lessons in this chapter to help your students gain a deeper understanding of rates, ratios and proportions. The clever videos entertain students while teaching them methods for solving everyday problems involving money, time, rate and distance. You can use the multiple-choice quizzes to see where students may need further clarification, and the chapter exam can show you what they have gained from this chapter.

## Chapter Lessons and Objectives

Lesson Objective
Ratios & Rates: Definitions & Examples Students learn to calculate ratios and rates.
How to Find the Unit Rate In this lesson, students determine the unit rate by using a denominator of one.
How to Solve a One-Step Problem Involving Ratios Students explore the process of solving one-step problems with ratios.
How to Solve a One-Step Problem Involving Rates In this lesson students learn to solve one-step problems with rates.
How to Solve Problems with Money This lesson takes students through the process of multiplying the number of units by the cost per unit to determine the total cost.
Proportion: Definition, Application & Examples Students explore proportions and how they apply to the world around them.
Calculations with Ratios and Proportions Students have the chance to practice determining ratios and proportions to solve problems.
How to Solve Problems with Time In this lesson students learn the work rate formula for calculating time.
Distance Formulas: Calculations & Examples Instructors explain how to figure out distance as well as how to determine distance plus distance and distance plus fuel.
How to Find an Unknown in a Proportion Students discover ways to find an unknown in a proportion.
How to Calculate Unit Rates Associated with Ratios of Fractions With this lesson, students learn to determine unit rates by figuring out ratios of lengths, areas and other quantities measured in like or different units.
Assessing Proportional Relationships Between Two Quantities Students have the opportunity to test for equivalent ratios in a table to find out if two quantities are in a proportional relationship.
Identifying the Constant of Proportionality (Variation) Students examine how to find the constant of proportionality.
Representing Proportional Relationships by Equations This lesson shows students how to write equations for proportional relationships.
Graphing Proportional Relationships Instructors explain how to interpret graphs of proportional relationships.
How to Use Proportional Relationships to Solve Multistep Ratio and Percent Problems Students discover methods to use proportional relationships to solve multistep ratio and percent problems like estimating the population size using percent of change.
Constructing Proportions to Solve Real World Problems In this lesson, students learn to construct proportions and their applications.

6 Lessons in Chapter 45: 8th Grade Math: Rates, Ratios & Proportions
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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