Curated OER
How Do You Find Equivalent Ratios?
Ratios are a comparison of numbers. So given a ratio, how can an equivalent ratio be written? Just multiply or divide, both the numerator and the denominator, by the same value. The result will be different numbers, but equal values that...
Corbett Maths
Simplifying Ratio
Ratios with smaller numbers are so much easier to manipulate. A short video describes how to simplify ratios by comparing the process to simplifying fractions. It works through a real-world example that requires writing and simplifying a...
Curated OER
Finding Equivalent Ratios
Duane explains the process needed to determine if two fractions are equivalent. There are two ways to do this, in one scenario he compares two fractions and multiplies by two to determine that the two fractions are equivalent. In the...
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: Algebra: Writing Proportions
This video demonstrates how to write a proportion by setting two ratios equal to each other. The video does not demonstrate how to solve the proportions, only set them up. This video is also found in the strand Algebra: Ratios and...
Virtual Nerd
Virtual Nerd: What Are Equivalent Ratios?
This video tutorial takes a look at ratios and shows how to tell if they have the same value or are equivalent. [4:54]
Virtual Nerd
Virtual Nerd: How Do You Solve a Word Problem Using Ratios?
Take a look at this tutorial to see how to use a ratio to create equivalent ratios. [4:34]
Virtual Nerd
Virtual Nerd: How Do You Use a Table of Equivalent Ratios to Predict a Value?
Learn how to use the pattern in a table of equivalent ratios to find an answer to a word problem by watching this video tutorial. [4:34]
Virtual Nerd
Virtual Nerd: How Do You Know if Two Ratios Are Proportional?
Ratios are proportional if they represent the same relationship. To see how to check if ratios are proportional, take a look at this tutorial. [4:34]
Khan Academy
Khan Academy: Solving Ratio Problems With Tables: Example 1
Presents several examples of ratio tables and asks questions about the equivalent ratio values. [5:05]
Sophia Learning
Sophia: Equivalent Ratios
Students learn about equivalent ratios in this video lesson. The tutorial consists of detailed examples that explore the mathematics concept.
Math Antics
Math Antics: Proportions
Gain a basic understanding of proportions by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [10:29]
Loyola University Chicago
Math Flix: Proportion Introduction
This QuickTime movie introduces the concept of proportion. As you watch and listen to the teacher and students interact it helps clarify the thinking behind applying this concept.
PBS
Pbs Learning Media: Scale City: Similar Figures in the Real World
This video features the Louisville Slugger Museum and Factory, home to the world's largest bat. Students see the role that measurement and engineering play in making bats to professional players' specifications and are asked to consider...
Other
Mash Up Math: What Is an Equivalent Ratio?
A video demonstrating how to determine if two ratios are equivalent and how to use ratio and rate reasoning to solve real-world and mathematical problems. [4:51]