About This Chapter
How It Works:
- Identify the lessons in Big Ideas Math Ratios and Proportions chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the ratios and proportions topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students Will Learn:
- Defining and writing ratios, rates and proportions
- Ratios and proportions in calculations and problems
- The relationship between slope and rate of change
- Direct variation equations
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1. Ratios & Rates: Definitions & Examples
If we have two items, or two numbers, and we want to compare them, what language can we use? How do we write the comparison? Find out as we learn about ratios and rates in this lesson.
2. Proportion: Definition, Application & Examples
When we want to compare one ratio, or fraction, to another equivalent ratio, it's a proportion. Learn all about proportions and practice solving proportion problems in this lesson.
3. Calculations with Ratios and Proportions
Even if only 99 out of 100 people need to know how to work with ratios, the odds that they'll be useful to you are very high. In this lesson, we'll practice performing calculations with ratios and proportions.
4. Solving Problems Involving Proportions: Definition and Examples
Learn how you can use proportions to find missing sides and how to increase or decrease the sizes of objects to create models of them in this video lesson.
5. Slopes and Rate of Change
If you throw a ball straight up, there will be a point when it stops moving for an instant before coming back down. Consider this as we study the rate of change of human cannonballs in this lesson.
6. Solving Equations of Direct Variation
In the real world, we come across a lot of problems that vary directly with each other. You will learn how to solve these types of direct variation problems in this video lesson.
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Other chapters within the Big Ideas Math Common Core 7th Grade: Online Textbook Help course
- Big Ideas Math Common Core 7th Grade Chapter 1: Integers
- Big Ideas Math Common Core 7th Grade Chapter 2: Rational Numbers
- Big Ideas Math Common Core 7th Grade Chapter 3: Expressions and Equations
- Big Ideas Math Common Core 7th Grade Chapter 4: Inequalities
- Big Ideas Math Common Core 7th Grade Chapter 6: Percents
- Big Ideas Math Common Core 7th Grade Chapter 7: Construction and Scale Drawings
- Big Ideas Math Common Core 7th Grade Chapter 8: Circles
- Big Ideas Math Common Core 7th Grade Chapter 9: Surface Area & Volume
- Big Ideas Math Common Core 7th Grade Chapter 10: Probability & Statistics