This site contains a lesson about ratios and unit rates as well as guided and independent practice for students to review the skills.

A clear explanation, with drawings and examples, of the golden ratio. The examples demonstrate the beauty of mathematics, such as how two Fibonacci numbers can approximate the golden ratio, and why the golden ratio can be called the...

[Free Registration/Login may be required to access all resource tools.] In this lesson students use the cross products of proportions to find base b in percent problems. Students examine guided notes, review guided practice, watch...

Gain an understanding of percent proportions by taking a look at examples and a video lesson.

Explore word problems about ratios and watch and listen to all the steps needed to solve.

Identify ratios in this learning game with martians.

In these KQED Lowdown infographics, explore how adult obesity rates in the United States, as measured by body mass index (BMI), have dramatically changed in the past half-century. A circular graph and a pictograph depict data by decade,...

Brush up on your math skills relating to proportions then try some practice problems to test your understanding.

This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.

Dr. Math has to go into the kitchen to solve this real-world problem. A student is looking for a solution to a ratio problem about baking a cake. You'll need to stir up your knowledge of ratios, fractions, decimals, proportions, and...

This WebMath site provides a general description of proportions. Content also includes a 'problem solver' which lists step-by-step instructions on how to obtain the correct answer.

[Free Registration/Login may be required to access all resource tools.] Learn how to use ratios and proportions to solve problems.

Print or create worksheets or flashcards to assess students' understanding of the constant of proportionality.

Teachers can assess students' knowledge of proportional relationships with these printable worksheets. You can even create your own worksheet or flashcards.

Print or create worksheets or flashcards to assess students' understanding of graphs and the significance of x and y in relation to proportionality.

Print or create worksheets or flashcards to assess students' understanding of how to express a proportional relationship as an equation.

Print or create worksheets or flashcards to assess students' understanding of ratio concepts.

Print or create worksheets or flashcards to assess students' understanding of ratios and unit rates.

A student is searching for a solution to a ratio question without using a diagram. Dr. Math helps to break it down both with and without a diagram. An understanding of fractions, multiplication, and basic algebra is necessary to get this...

Test your knowledge of ratios by determining the equivalents and how to interpret the given ratio.

Double ratios are investigated in this mathematics resource. Students learn about double ratios through a lesson with examples and assess their understanding with a learning game.

In this instructional activity, learners will explore the concept of similarity. Students will first simplify ratios, solve proportions using the cross product property, and use properties of proportions to solve real-world problems....

Test your knowledge of ratios.

The ratio calculator performs three types of operations and shows the steps to solve. It simplifies ratios or creates an equivalent ratio when one side of the ratio is empty, solves ratios for the one missing value when comparing ratios...