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Lesson Plan
Illustrative Mathematics

Overlapping Squares

For Teachers 5th - 7th Standards
The objective of this activity is to find the percent of the area of a two squares overlapping. Mathematicians find the ratio of area for the part that overlaps to the rectangle formed. The final answer is a percent as a rate per 100....
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Lesson Plan
Illustrative Mathematics

Dana's House

For Teachers 5th - 7th Standards
Your class is to find the percent of the lot that is not covered by a house. Make sure your pupils understand the problems before they begin. The lot is the whole of the percent problem and the house is the part. The exercise is good...
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Lesson Plan
Santa Monica College

Mole Ratios and Reaction Stoichiometry

For Teachers 9th - Higher Ed Standards
Stoichiometry sounds complicated, but it really means the study of the amount of substances involved in a reaction. The sixth lesson plan in an 11-part series has scholars use stoichiometry to find the theoretical yield of a reaction....
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Assessment
Mathematics Assessment Project

Ratios and Proportional Relationships

For Teachers 7th Standards
Time to see what they've learned. Seventh graders solve a set of seven short problems in the ratios and proportional relationships domain. Applications include photo negatives, washing machines, coffee powder, sleep, stamps, etc.
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Worksheet
Mathed Up!

Ratio

For Students 5th - 7th Standards
Reinforce math skills with an eight-page exercise comprised of 15 problems covering the concept of ratios. 
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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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Worksheet
Curated OER

Percent Word Problems

For Students 7th - 9th
In this word problem worksheet, learners find the percent of a number.  This two-page worksheet contains 18 problems.  Answers are provided on the last page.
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PPT
Science Geek

Percent Composition, Empirical and Molecular Formulas

For Students 10th - Higher Ed
Help your pupils understand when empirical becomes molecular. The lesson presentation demonstrates the connection between empirical formulas and molecular formulas. Then, given percent composition, the lesson demonstrates the steps to...
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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. 
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Lesson Plan
Curated OER

Word Problems Dealing with Ratio and Proportion

For Teachers 6th - 8th
Mindful middle-schoolers read and solve a number of word problems. Learners copy and discuss what they believe their strategies are in solving each problem. They also write their findings and share with the rest of the class.
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Interactive
CK-12 Foundation

Conversion of Decimals, Fractions, and Percents

For Students 6th - 8th Standards
Five questions—true or false and multiple-choice—challenge mathematicians to convert decimals, fractions, and percents. An interactive table displays how to write a portion of shapes in a variety of ways. A discussion question concludes...
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Workbook
Utah Education Network (UEN)

Percent, Division with Fractions, and Measurement Conversion

For Students 6th Standards
The resource will be 100 percent beneficial. The third of seven installments in 6th Grade Math starts with lessons on percent and percent problems. Pupils also learn how to divide fractions and apply ratio reasoning to convert units,...
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Interactive
CK-12 Foundation

Overview of Percents: Play Checkers

For Students 6th - 8th Standards
Bet classes didn't know playing checkers help with understanding percents. An interesting interactive has pupils consider a series of moves in checkers. It then requires them to answer a set of challenge questions on percentages...
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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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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 of Change

For Students 8th - 10th
In this percent of change learning exercise, students calculate the change in two whole numbers. They compute the percent of change and indicate if it is an increase or decrease.
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PPT
Curated OER

Who Wants to Be a Champion

For Teachers 5th - 6th
Challenge your learners with this game focusing on problems involving ratios and calculating percentages. In this game, learners have to identify a ratio, convert ratios to a fraction, convert a percent to a fraction, and answer word...
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Worksheet
Curated OER

Proportional Reasoning: Ratio Applications

For Students 8th
In this ratio applications learning exercise, 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...
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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, students examine percent problems including tax and percent of change.
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Worksheet
Curated OER

Ratio, Rates and Percentages

For Students 8th
For this ratio, rates and percentages worksheet, 8th graders solve 22 various types of problems related to ratios, rates and percentages. They first write ratios in lowest terms and describe each of comparison stated. Students also solve...
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Worksheet
Math Mammoth

Ratios 1

For Students 5th - 6th
For this ratios learning exercise, students complete several activities for ratios. Students enhance their understanding of ratios and percents.
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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

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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