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Curated OER
How Do You Find the Rate of Change Between Two Points in a Table?
Given a table of values, find the rate of change. First, set up the given table, and identify the values that will be used to calculate the change. Of course, there is a formula. So use the formula to solve the problem. Still confused?...
Curated OER
How Do You Figure Out the Time Traveled if You Know Distance and Speed?
Yes, it's a word problem, but you know the formula for distance, d=rt. The word problem here gives you two values so all you have to do is plug them into the correct place and solve. Don't forget to use the division property of equality...
Curated OER
How Do You Solve an Opposite-Direction Travel Problem?
The quintessential word problem that makes everyone scream and run away. But wait, come back! Time, distance, when will they get there? You are really only working with one formula: distance= rate times time. You can do this. View this...
Virtual Nerd
What are Rates and Unit Rates?
Rate is really a ratio of given quantities that you are comparing that have different units. A unit rate is a rate that has a denominator of one. The teacher gives a couple of examples for each term, rate and unit rate. The instructor is...
Virtual Nerd
How Do You Solve a More Complicated Interest Problem?
This word problem on simple interest has a bit of a twist. When you read this word problem it boggles the mind. I know, it boggled mine. But never fear, the instructor takes you through this seemingly complicated interest problem...
Government of Alberta
Learn alberta.ca: Math Interactives: Rate/ratio/proportion (Video Interactive)
The use of rate, ratio, and proportion is illustrated in this video about action photography. An additional interactive element allows students to explore equivalent ratios equivalencies through enlarging and reducing images to compare...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Finding Unit Rates
This video shows how to find a unit rate in the context of a word problem. Practice problems are available. [2:31]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Finding Unit Prices
This video shows how to find a unit price in the context of a word problem and write it in simplest form. Practice problems are available. [2:01]
Khan Academy
Khan Academy: Systems of Equations Word Problems: Overtaking Word Problem
This video shows how to solve an algebra word problem involving three different rates.
Planet Nutshell
Planet Nutshell: Math Shorts: Unit Rates
Planet Nutshell Math Shorts provide animated videos that explain various math topics. On this site students learn about unit rates.
Khan Academy
Khan Academy: Unit Conversion: Speed Translation
This video tutorial provides insight on translating speed units from feet per minute to inches per second.
Khan Academy
Khan Academy: More Equation Practice: Early Train Word Problem
This video demonstrates how to solve a word problem involving writing and solving equations that deal with rates and elapsed time.
Sophia Learning
Sophia: Proportions, Ratios, and Rates
This video lesson describes how ratios are related to rates and proportions. Students can check their understanding with an assessment.
Khan Academy
Khan Academy: Rates: Finding Unit Prices
A short video with an explanation on how to find a unit price from a real-world application problem. [2:01]
Khan Academy
Khan Academy: Rates: Usain Bolt's Average Speed
Figuring out Usain Bolt's average speed over 100m when he broke the world record in 2009.
NEAPortal
Nea Portal:solve Real World Problems That Involve a Combination of Rates, Proport
This lesson is about solving real world problems that involve a combination of rates, proportions and percents. Also, it is aligned to a common core state standard CC.9-12.N.Q.2. [10:59]
Khan Academy
Khan Academy: Ecology: Exponential and Logistic Growth in Populations
Learn about population growth rates and how they can be modeled by exponential and logistic equations. [7:32]
PBS
Pbs: Math Mess: The Belly Buster Pizza Puzzle
Doubling something isn't always easy! See if you can figure out why if Tito sells his new pizza for $19.99 he'll be in trouble. Use what you know about area, rates, and proportions to figure out how much Tito should charge or what the...
Sophia Learning
Sophia: Metric Rates: Lesson 4
In this lesson, students learn metric units for describing rates. It is 4 of 5 in the series titled "Metric Rates."
Sophia Learning
Sophia: Types of Rates: Lesson 3
In this lesson, different types of rates are introduced and explained. It is 3 of 5 in the series titled "Types of Rates."
Sophia Learning
Sophia: English Rates: Lesson 4
This lesson introduces English units for describing rates. It is 4 of 5 in the series titled "English Rates."