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Worksheet
Curated OER

Proportions 1

For Students 9th - 11th
For this proportion worksheet, students find the missing side of 4 shapes that are similar to their mate. Shapes include triangles and quadrilaterals,. In the second part of the worksheet, students use the scale factor to find missing...
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Worksheet
Curated OER

Lesson 3-5: Proportions and Similar Figures

For Students 9th - 12th
For this similar figures worksheet, students use proportions to solve 6 short answer and multiple choice questions.  Students use proportions to answer questions about map scales and height of trees given shadow lengths.
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Worksheet
Curated OER

Math Hw #15: Proportions

For Students 9th - 12th
In this proportions worksheet, students solve 8 word problems. Students determine the cost of an item given a unit cost. Students find a missing side length of a triangle using proportions of similar triangles.
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Lesson Plan
Curated OER

Ratio Relationships

For Teachers 9th - 11th
Students solve for the different ratio and proportion of a problem. In this geometry instructional activity, students show their knowledge of how to solve proportional relationships. They convert between percent, decimals and fractions.
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Interactive
Curated OER

Proportional Parts

For Students 9th - 10th
In this geometry instructional activity, students identify what makes triangles similar and congruent. They use SSS,SAS and AA to identify the correct ratio of each triangle. There are 15 questions.
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Lesson Plan
EngageNY

Dividing Segments Proportionately

For Students 9th - 12th Standards
Fractions, ratios, and proportions: what do they have to do with segments? Scholars discover the midpoint formula through coordinate geometry. Next, they expand on the formula to apply it to dividing the segment into different ratios and...
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Assessment
Achieve

Greenhouse Management

For Teachers 8th - 10th Standards
Who knew running a greenhouse required so much math? Amaze future mathematicians and farmers with the amount of unit conversions, ratio and proportional reasoning, and geometric applications involved by having them complete the...
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Lesson Plan
Curated OER

Ratios and Proportions

For Teachers 9th - 11th
Learners solve problems involving percents and ratios. In this algebra instructional activity, students convert decimals to percents and percents to decimals. They solve problems involving algebraic expressions and four different kinds...
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Worksheet
Curated OER

Glencoe - Proportions and Similar Triangles

For Students 9th - 12th
In this proportions and similar triangles learning exercise, students solve 14 multiple choice problems. Students find unknown sides of similar triangles using proportions. Students multiply means and extremes to solve proportions.
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Worksheet
Curated OER

Ratio Measures

For Students 10th
In this ratio measures worksheet, 10th graders solve and complete 8 different types of problems. First, they find the largest angle of a hexagon. Then, students solve the proportions shown. They also name the similar figures by filling...
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Lesson Plan
Curated OER

Proportions a/b=c/d

For Teachers 8th - 10th
Students calculate distance and proportion of objects. In this algebra instructional activity, students define proportion and how it is used in math. They solve the problem through guided instruction.
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Lesson Plan
Curated OER

What percent of ratio is proportion?

For Teachers 9th
Ninth graders investigate the concepts of ratio and proportion.They solve examples with the teacher for ratios and proportions. A basic fraction review is used for a warm up in this lesson. The primary focus of the lesson appears to be...
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Lesson Plan
Curated OER

Super Size It, Please!

For Teachers 8th - 11th
Pupils take photos from a given distance and determine the height of the person using a scale factor. Pupils calculate the ratio of student actual height to student photo height. They take pictures from 3 different distances to see if...
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Lesson Plan
Curated OER

The Golden Students

For Teachers 6th - 12th
Scholars view the video, "Donald Duck in Mathmagic Land," and discuss examples in nature which have proportions of the golden ratio. They measure and record different body lengths from a worksheet and convert the ratios to equivalent...
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Lesson Plan
Curated OER

Stadiums in America

For Teachers 7th - 10th
Let's play ball! A great springtime activity to learn about ratios. This activity challenges learners to draw stadiums to scale on standard letter paper and also on construction paper. This three-day lesson includes a pre-assessment...
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Unit Plan
Radford University

The Wheels on the Bus

For Students 9th - 12th Standards
Find a cheaper way to keep buses going round and round. Small groups use their knowledge of ratios and proportions to find ways to save money on school transportation. The teams determine the number of miles buses currently travel by...
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Lesson Plan
Bowland

Explorers – Patrol Services

For Teachers 6th - 9th
Far out — plan a trip to space! Aspiring mathematicians steer a space vehicle through an asteroid field, calculate currency exchanges to buy provisions, and determine placement of charges to blow up asteroids. Along the way, they learn...
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Lesson Plan
Curated OER

Origami Cube

For Teachers 9th - 10th
Learners compare two lengths using the area of a square. In this geometry lesson, students solve problems using ratio and proportion of the two shapes. They solve equations by taking the square root of both sides.
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Lesson Plan
Curated OER

Recipe: Unit Rate

For Teachers 9th - 11th
Students solve problems using ratios and proportions. In this algebra lesson plan, students identify the unit rate and convert between fractions and decimals. They create graphs from their data.
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Lesson Plan
EngageNY

Comparing the Ratio Method with the Parallel Method

For Students 9th - 10th Standards
Can you prove it? Lead your class through the development of the Side Splitter Theorem through proofs. Individuals connect the ratio and parallel method of dilation through an exploration of two proofs. After completing the proofs,...
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Lesson Plan
EngageNY

Making Scale Drawings Using the Ratio Method

For Students 9th - 10th Standards
Is that drawn to scale? Capture the artistry of geometry using the ratio method to create dilations. Mathematicians use a center and ratio to create a scaled drawing. They then use a ruler and protractor to verify measurements. 
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Activity
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PBS

The Lowdown — Exploring Changing Obesity Rates through Ratios and Graphs

For Teachers 6th - 9th Standards
Math and medicine go hand-in-hand. After viewing several infographics on historical adult obesity rates, pupils consider how they have changed over time. They then use percentages to create a new graph and write a list of questions the...
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Lesson Plan
Curated OER

Proportion

For Teachers 9th - 11th
Students investigate proportion and ratio. In this geometry instructional activity, students set up the ratios of proportions correctly and solve for the unknown. They relate it to word problems.
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Worksheet
Curated OER

Points on a Line Segment

For Students 10th
In this geometry worksheet, 10th graders solve a problem relating to the length of a line segment.  The location of the points on the segment is given in terms of ratios.  The one page worksheet has one problem with the solution. 

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