Lesson Plan
Curated OER

Ratios and Proportions

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

Percent Equation 3

For Students 7th - 9th
For this percent equation worksheet, students use proportions to find the percent of a given number. This two-page worksheet contains 12 problems. Answers are provided on the last page of the worksheet.
Worksheet
Curated OER

A Geometry Worksheet - Similar Triangles

For Students 9th - 12th Standards
In this similar triangles worksheet, high schoolers find the scale factor of 6 sets of similar triangles. Students find the scale factor of two similar triangles given a sketch with measurements. High schoolers use proportions to find a...
Worksheet
Curated OER

Ratio and Unitary Methods

For Students 6th - 8th
For this ratios worksheet, middle schoolers solve 4 short answer problems. Students determine the number of girls/boys and oranges/water given a ratio.
Lesson Plan
Curated OER

7.RP Music Companies, Variation 1

For Teachers 6th - 8th Standards
We've got the beat! And your musically-minded mathematicians will tap their toes as they determine which music company would be getting a better deal based on their offers to buy out TunesTown. The topic is extended in an additional...
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 instructional activity. The primary focus of the...
Lesson Plan
Curated OER

Ratios

For Teachers 6th
Sixth graders pariticipate in a lesson that focuses on the finding of a ratio and using it to set up a proportion in realtionship to creating a scale drawing. This is done using given problems. It would be valuable for students to have...
Lesson Plan
Curated OER

Ratios and Proportions

For Teachers 7th
Seventh graders explore the concept of ratios and proportions. In this ratios and proportions activity, 7th graders work in groups to measure their heights and their arm span. Students compare their height to their arm span. Students...
Lesson Plan
Curated OER

Solving Percent Problems with Proportions

For Teachers 7th
Seventh graders explore the concept of percent problems. In this percent problem lesson plan, 7th graders use proportion equations to solve percent problems. Students find percentages of numbers and use proportions to determine...
Worksheet
Curated OER

Leveled Problem Solving Using Proportions with Similar Polygons

For Students 6th - 7th
In this proportions and similar polygons activity, students solve the problems that use proportions, rations, fractions, and similar polygons.
Worksheet
Curated OER

Taste Test-- Ratios

For Students 5th - 6th
In this math worksheet, students mix four "cocktails" of orange juice and lemonade in the different rations specified. Students rate the drinks and determine their favorite combination. Students answer 10 questions about the ratios in...
Lesson Plan
Curated OER

A Matter of Proportion

For Teachers 6th - 12th
Students measure the relative heights of the mosaic giraffe and its trainer and compare their proportions to an actual giraffe and zoo trainer.
Worksheet
Curated OER

Ratios

For Students 6th
For this ratios worksheet, 6th graders solve and complete 3 different types of problems. First, they divide each amount shown in the ratio of 2 to 3. Then, students explain why the amounts worked out to be whole numbers.
Lesson Plan
National Research Center for Career and Technical Education

Back to Basics

For Teachers 9th - 12th Standards
Your class will enjoy this Health Science lesson created by CTE and math teachers from Missouri. Learners make conversions between the apothecary system and metric and US standard measurements used in the healthcare field. The CTE...
Interactive
PHET

Unit Rates

For Students 6th Standards
Sometimes you just want to know the cost of one apple. A fun interactive lets learners explore the unit costs of fruits, vegetables, and candy. It shows how ratios to express ratios symbolically and on a double number line.
Interactive
CK-12 Foundation

Percent of a Number: Acid Solution

For Students 6th - 8th Standards
Mathematicians answer five questions about percents, ratios, and proportions with help from an interactive graduated cylinder. Question types include multiple-choice, fill-in-the-blank, and discussion. 
Activity
101 Questions

Nana's Chocolate Milk

For Teachers 6th - 8th Standards
Nobody wants to make Nana mad! Help Mr. Meyer fix the chocolate milk he prepared for his Nana using too many scoops of chocolate. Youngsters develop a problem-solving strategy that leads to the solution using ratios and proportions.
Instructional Video3:48
PBS

Math with Jake: Frequencies and Pitch

For Students 6th - 8th Standards
Be an octave above the rest. A musician explains how to write music in different time signatures. An interesting resource continues to demonstrate ratios using the pitch of musical notes and hertz. Pupils use a pitch table and determine...
Interactive
Scholastic

Study Jams! Similar Figures

For Students 5th - 8th Standards
Discover how triangles are congruent based on their sides, angles, and proportionality. Learners explore the ways to determine similarity at their own pace, and then they practice afterwards with an assessment. 
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...
Lesson Plan
Curated OER

Chances Are......You're Right

For Teachers 5th - 6th
Young mathematicians study probability. In this math instructional activity, learners calculate odds, and convert those into percentages of probability. Fractions are also used, making this instructional activity quite rich in some of...
Assessment
Balanced Assessment

At the Supermarket

For Students 6th - 8th
Grocery managers and chefs sure use lots of math. Scholars first use ratios and unit rates to determine a price for a can of corn. Once individuals have the pricing, they determine the amount of ingredients necessary to make brownies...
Activity
Noyce Foundation

Measuring Mammals

For Students K - 12th Standards
Explore the meaning of scale and proportion with a set of five activities that examines the topic from elementary through high school. The first lessons explore ratio by examining pictures of different sizes. The next three activities...
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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