Ratios and Proportions Teacher Resources

In this video (3:09), life-size replicas help demonstrate one-dimensional scaling and the ratio relationship between two real-world quantities. The accompanying classroom activity helps students understand how ratios and proportions can...

In this video, life-size replicas help demonstrate one-dimensional scaling and the ratio relationship between two real-world quantities. The accompanying classroom activity helps students understand how ratios and proportions can help...

Estimate the size of a large population (fish in a bay) by applying the concepts of ratio and proportion through the capture-recapture statistical procedure.

Students use ideas of ratio and proportion to investigate various ways to make a circle graph. Students create graphs to display the probabilities of the different sums that can be generated with two number cubes. [Requires Adobe Reader.]

Demonstrate the ability to apply the use of decimals, fractions, ratios and proportions to situations based upon given information about planets in the solar system.

Using a tape diagram is one of the key models for ratios and proportions.

In this lesson, the students will learn what a ratio is and how it can be used in a comparison. In this lesson, students will also determine how to combine a sports drink in powder form and water to make enough for a whole football team....

Download and print these worksheets to sharpen your skills working with fractions. Worksheets focus on modeling fractions, ratios and proportions, comparing, ordering, simplifying, converting, and order of operations.

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,...

Using the USA TODAY Infograph, 'Wing tabs save fuel', ratios and proportions will be used to explore the concept of similarity between a drawing/model and the actual dimensions. The effects of dilation (size change) on an image and...

[Free Registration/Login may be required to access all resource tools.] In this lesson students find unknown measurements indirectly using the ratios and proportions of similar figures. Students examine guided notes, review guided...

[Free Registration/Login may be required to access all resource tools.] In this lesson students write proportions and then solve proportions by using cross-products. Students examine guided notes, review guided practice, watch...

Deterime the ratios of amounts to one another and then simplify.

This lesson explains proportions along with the formula to determine if the ratios are equal. An interactive practice activity is included.

[Free Registration/Login may be required to access all resource tools.] In this lesson students write ratios to model real-world scenarios. Students examine guided notes, review guided practice, watch instructional videos and attempt...

[Free Registration/Login may be required to access all resource tools.] In this lesson students use proportions to find percents. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...

The purpose of this task is to see how well students students understand and reason with ratios. This task was adapted from problem #14 on the 2011 American Mathematics Competition (AMC) 8 Test. Aligns with 7.RP.A.3. The site provides a...

In this exercise, students solve word problems that involve using different units. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

[Free Registration/Login may be required to access all resource tools.] In this lesson students write ratios in simplest form. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.

In this lesson, you will learn how rates are part of the ratio family by reviewing the qualities of a ratio. [5:55]

[Free Registration/Login may be required to access all resource tools.] In this lesson students simplify ratios by dividing by the greatest common factor. Students examine guided notes, review guided practice, watch instructional videos...

[Free Registration/Login may be required to access all resource tools.] In this lesson students write ratios, order ratios from least to greatest and greatest to least and compare ratio. Students examine guided notes, review guided...

Identify ratios in this learning game with martians.

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