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Lesson Plan
Curated OER

How Big Is That Star?

For Teachers 6th - 9th
Aspiring astronomers study stars. They compare stars and explain the relationship between radius, mass, and diameter. By creating a star simulation, they discover how a binary star system's orbit can cause changes in the observed...
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Lesson Plan
Curated OER

Applying Proportionality in Scale Drawings

For Teachers 6th
Sixth graders examine a blue print and discuss the reasoning behind using blue prints. In this proportionality lesson,  students collaborate with their teammates to create a scale drawing. Once that is complete, 6th graders write a...
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Worksheet
Math Mammoth

Ratios and Proportions

For Students 5th - 6th
For this ratios and proportions worksheet, learners complete several activities that advance their understanding of proportions and ratios. Students solve six equations and five word problems.
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Worksheet
Math Mammoth

Understanding Percent

For Students 3rd - 4th
In this understanding percent learning exercise, students fill in the missing parts for examples of number of colored parts and total numbers and use them to complete charts and rewrite sentences using the exact amount of things and...
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Worksheet
Math Mammoth

Fractions, Percents, and Decimals

For Students 6th - 7th
In this percents activity, students complete 3 charts in which percents, decimals and fractions are converted. Students also solve 20 problems with the changing of percents to decimals or fractions.
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Lesson Plan
Curated OER

New Deck: Percents

For Teachers 5th
Fifth graders observe and demonstrate the meaning of percents by creating a new deck of fifty-two cards. They meet a specified criteria, with a specific percent of the cards being prime numbers, eight's, multiples of five, face cards,...
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Lesson Plan
Curated OER

Popping Up Percents!

For Teachers 6th - 8th
Middle schoolers find percents and unit price using popcorn.
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Worksheet
Curated OER

Family Letter and Activity: Cars, Trucks and Percents

For Students 4th - 5th
In this math instructional activity, students will take home a letter to their parents explaining that they are studying Chapter 10: Ratio, Proportion and Percent. Then students will complete a homework activity in which they ask family...
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Worksheet
Curated OER

Proportional Reasoning: Ratio Applications

For Students 8th
In this ratio applications worksheet, 8th graders solve and complete 24 various types of problems that include proportional reasoning. First, they solve each pair of similar figures for the given variable. Then, students write and solve...
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Lesson Plan
Curated OER

Solve Percent Problems Using Proportions

For Teachers 9th - 10th
Students explore proportions and ratios. In this solving percent problems lesson plan, students examine percent problems including tax and percent of change.
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Lesson Plan
Curated OER

Quilting with Middle School Students: Using Proportionality to Develop Quilt Designs

For Teachers 7th - 9th
Students use quilt patterns to illustrate ratios. In this fractions lesson, students color quilt patterns using given fractions and ratios of colors. A finished "quilt" is assembled from the work of the students. This is an...
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Worksheet
Curated OER

Percent Notation

For Students 7th - 10th
In this algebra worksheet, students divide circles into equal portions as they explore percents and decimals. They convert between decimals and fractions using ratio and proportion. There are 8 questions.
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Worksheet
Curated OER

Percent Equation 3

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

Working with Percentages and Proportions

For Students 6th - 8th
In this percentages and proportions activity, students are given percentages, they express them as a proportions, they create an equivalent ratio using "x" for the unknown portion and they cross multiply and divide to find their answer.
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Lesson Plan
Curated OER

Mixing Up Ratios

For Teachers 9th - 10th
Learners solve problems of ratio and proportions using hands on. In this algebra lesson, students vary the concentration of a fruit drink using parts of a ratio.
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Worksheet
Curated OER

Proportional Reasoning

For Students 7th - 10th
In this proportional reasoning worksheet, learners use proportions to solve discount and sale problems. This two-page worksheet contains 4 multi-step problems.
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Lesson Plan
Curated OER

Percent and Percentage Problems

For Teachers 9th - 11th
In this Algebra I/Algebra II worksheet, students solve application problems involving percents, percent error, and percent of increase or decrease.  The two page worksheet contains a combination of fourteen multiple choice and free...
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Lesson Plan
NTTI

If You Hopped Like a Frog

For Teachers 6th - 8th Standards
Get your frogs hopping by introducing them to the concepts of ratio and proportion. As a class, they perform arithmetic operations using ratios then discover how they represent quantitative relationships. In groups, they write their own...
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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
Illustrative Mathematics

Finding a 10% increase

For Teachers 6th - 8th Standards
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
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Lesson Plan
Curated OER

Count The Letters

For Teachers 6th - 9th
Students perform activities involving ratios, proportions and percents. Given a newspaper article, groups of students count the number of letters in a given area. They use calculators and data collected to construct a pie chart and bar...
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Assessment
Noyce Foundation

Cereal

For Teachers 6th - 7th Standards
Find the best protein-packed cereal. The short assessment task covers equivalent and comparing ratios within a context. Pupils determine the cereal with the highest ratio of protein. A rubric helps teachers with point allotments for...
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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...
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Lesson Plan
Curated OER

All About Ratios

For Teachers 5th - 8th
Students investigate the use of multiplication and division of whole numbers to solve problems including equivalent ratios and rates.