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Lesson Plan
Math Worksheets Land

Find Percentages of Numbers - Step-by-Step Lesson

For Students 6th - 8th Standards
Finding a percentage of a number is a skill learners must know in order to be successful thinkers. The resource introduces this concept with a guided explanation and can be used with the additional materials as a complete lesson. 
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Worksheet
Math Worksheets Land

Numbers Based on Percentage

For Students 6th - 8th Standards
Percent proportion problems (say that three times fast!) can be a tricky thing for young mathematicians to ace. But practice makes perfect and this resource provides five different versions of the same topic as a worksheet. Although no...
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Lesson Plan
Illustrative Mathematics

Comparing Years

For Teachers 6th - 7th Standards
Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...
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Lesson Plan
EngageNY

Fluency with Percents

For Teachers 7th Standards
Pupils build confidence working with percents as they work several types of percent problems to increase their fluency. The resource contains two sets of problems specifically designed to build efficiency in finding solutions of basic...
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Lesson Plan
EngageNY

Percent Error Problems

For Teachers 7th Standards
Individuals measure a computer monitor and determine how accurate their measures are. The eighth segment in a series of 20 introduces the concept of percent error. Pupils find the percent error of their measurements and discuss the...
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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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Worksheet
Curated OER

Finding Percents of a Number (A)

For Students 5th - 6th
In this percents learning exercise, students solve 40 problems in which the percent of a number is calculated. (Example: 35% of 31). There is no instruction on the page.
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Lesson Plan
Curated OER

Finding Percent of Change/ Increase or Decrease

For Teachers 7th
Seventh graders explore the skill of finding the increase and decrease of a quantity. Calculating the increase and decrease is covered by a percent. The proporition for finding a percent is also part of the lesson.
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Worksheet
Curated OER

Percent Word Problems

For Students 7th - 9th
In this word problem worksheet, students find the percent of a number.  This two-page worksheet contains 18 problems.  Answers are provided on the last page.
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Worksheet
Curated OER

Stoichiometry

For Students 9th - 12th
In this stoichiometry worksheet, students solve thirty problems using the process of stoichiometry to find moles, molecules, and masses of substances in chemical reactions. Students balance chemical equations, find limiting reagents and...
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PPT
Curated OER

The Mathematics of Chemical Formulas

For Teachers 8th - 12th
Wow! This is one of the most exhaustive presentations on finding chemical formulas that you will come across! Beginning with the basics, and leaving junior chemists with procedures and concrete examples, this PowerPoint certainly...
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Assessment
Curated OER

2000 U.S. National Chemistry Olympiad National Exam - Part I

For Students 9th - 12th
The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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Activity
David Pleacher

Candy Math Fun

For Teachers 3rd - 8th Standards
Few things can motivate children to learn like the promise of a sweet and tasty treat. Given a bag of M&M®s, Skittles®, or other colorful candy, students first predict the contents of the bag before counting the pieces, creating a...
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Worksheet
Curated OER

Percent of Change, Discounted Price, and Total Price

For Students 7th - 9th
In this percent of change worksheet, students find the percent of increase and the percent of decrease.  They compute sales tax and determine the final price.  Students also figure the discounted price of an item.  This one-page...
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Worksheet
Curated OER

Bits and Pieces - More About Percents - Online Manipulatives

For Students 5th - 6th
In this online percentages worksheet, learners access the Library of Virtual Manipulatives web site and open the percentage tool. They use the online tool to complete 8 multi-step questions making graphical representations and finding...
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Lesson Plan
Curated OER

Percents: (An Application to Real Life Problems)

For Teachers 7th
Seventh graders explore the concept of calculating percents. In this calculating percents lesson, 7th graders simulate ordering food off of a menu. Students work in groups to calculate the bill, tax, and the tip for the...
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Worksheet
Curated OER

Molecular Mass and Percent Composition Worksheet

For Students 9th - 12th
In this molecular mass and percent composition activity, students find the molecular mass of 10 compounds to three decimal places. They also find the percent composition of 7 compounds and express their answers to two decimal places.
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PPT
Curated OER

Finding the Percent of Something

For Teachers Pre-K - 7th Standards
This PowerPoint demonstrates the process of finding the percent of a given number. The slides contain various word problems and questions that viewers must find the answer to. This slide show is interactive and allows the middle...
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Worksheet
Curated OER

Determining Percent Composition

For Students 9th - 12th
In this percent composition worksheet, students calculate the percent composition of compounds using their formula masses and masses of individual elements. They solve nine problems including calculating percent composition, finding...
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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

Molecular Mass and Percent Composition

For Students 9th - 12th
In this molecular mass and percent composition worksheet, high schoolers complete 5 sections where they determine atomic masses of given elements, they determine formula masses for given molecules, they find the molecular mass of 12...
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Worksheet
Curated OER

Tax Problem: Percents

For Students 9th - 12th
For this tax worksheet, students solve 1 problem about taxes.  Students find the federal and state tax on a given amount of money.
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Worksheet
Curated OER

Four Decimal, Fraction, and Percent Activities

For Students 6th - 10th
In this fraction learning exercise, students solve problems presented in four different activities.  The activities cover percentages, fractions, decimals, currency exchange, and value added tax.  A card "game" is one of the activities. ...

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