CK-12 Foundation
Ck 12: Elem Math: Finding Speed Using Ratios
[Free Registration/Login may be required to access all resource tools.] In this learning module, students must solve word problems involving time, speed, and distance by using a ratio in their calculations. Includes video demonstrating a...
Khan Academy
Khan Academy: Discount, Tax, and Tip Word Problems
Practice solving word problems involving price discounts, taxes, and tip calculations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Markup and Commission Word Problems
Practice solving word problems involving price markups and commission fees. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Education Place
Houghton Mifflin: Eduplace: Extra Practice Quiz Percent as a Ratio
Find the percent using a ratio and find a ratio using a percent. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try again then you are told the correct answer....
Illustrative Mathematics
Illustrative Mathematics: 6.rp, 6.ee Fruit Salad
A fruit salad consists of blueberries, raspberries, grapes, and cherries. The fruit salad has a total of 280 pieces of fruit. There are twice as many raspberries as blueberries, three times as many grapes as cherries, and four times as...
BBC
Bbc: Gcse Bitesize: Controlling Chemical Reactions
This lesson focuses on comparing the reaction rate of chemical reactions with different surface areas.
The Math League
The Math League: Ratio and Proportion
Detailed explanations of ratio, comparing ratios, proportion, rate, converting rates, and average rate of speed, all with examples.
Shmoop University
Shmoop: Ratios & Percentages: Unit Rate
Students learn about unit rate. The mathematics resource consists of examples and practice problems with answers.
Math Aids
Math Aids: Ratio Worksheets
Great resource for learning and practicing ratios and unit rates. Math worksheets are printable, may be customized, and include answer keys.
Math Is Fun
Math Is Fun: Ratios
After reading a simple definition of "ratios", you can explore many examples of ratio use in the real world.
The Math League
The Math League: Ratio and Proportion
This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.
Oswego City School District
Regents Exam Prep Center: Metric Conversions and Rates
Find out all about measurement in this test prep lesson exploring English and metric measurement. Students can compare metric and customary measurements using the conversion charts, assess how much they have learned using the interactive...
Quia
Quia: Rates, Ratios, and Proportions
One or two players can play a learning game that reviews rates, ratios, and proportions.
National Council of Teachers of Mathematics
The Math Forum: Ratios and Fractions
A seventh-grade student is having trouble understanding ratios, fractions, and simplest form. Dr. Math to the rescue! Real-world, easy to grasp examples.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Ratios and Rates
This site gives a short interactive quiz which allows students to self-assess their understanding of ratio and rates.
Student Achievement Partners
Illustrative Mathematics: The Escalator, Assessment Variation [Pdf]
Use this assessment to track students understanding of ratios and rates.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Proportion Playground
An interactive simulation that teaches about ratios, proportional reasoning, and unit rate by making predictions and testing proportions while designing a necklace, throwing balloons filled with paint, playing billiards, or shopping for...
Khan Academy
Khan Academy: Writing Proportions
Practice writing proportions to describe real-world situations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Arithmetic: Proportions
[Free Registration/Login may be required to access all resource tools.] In this lesson students write proportions and then solve proportions by using equivalent rates. Students examine guided notes, review guided practice, watch...
Alabama Learning Exchange
Alex: Cool Kool Aid Experiment
Seventh grade students have had wide-ranging experiences with fractions and operations on fractions, but ratios and rates may be new concepts for them. This activity introduces students to the idea of rates via a familiar and tangible...
ClassFlow
Class Flow: Understanding Slope as a Ratio
[Free Registration/Login Required] Finished investigating slope as an angle and will now do some investigation with slope as a ratio. It will then be a bridge to go back to linear equations (with the connection to rate of change). There...
Other
Kqed: The Lowdown: Life Expectancy: Finding Ratio Relationships
In this interactive map, learn how life expectancy, obesity, hypertension, and physical activity rates have changed dramatically throughout the United States over the last three decades.
Other
Ask Numbers: Measurement Conversion Calculators and Charts
What kind of unit conversion would you like to do? This site will allow you to do a multitude of conversions. Just click on the specific measurement you are needing to convert. It also provides a history of measurements and a chart of...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Overlapping Squares
Students use ratio and rate to answer this performance task: The data transfer rate of an Internet connection is the rate in bytes per second that a file can be transmitted across the connection. Data transfer is typically measured in...
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