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Assessment
Noyce Foundation

Percent Cards

For Teachers 6th Standards
Explore different representations of numbers. Scholars convert between fractions, decimals, and percents, and then use these conversions to plot the values on a horizontal number line.
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App
Todd Bowden

Number Line

For Students 4th - 8th Standards
Arrange these in order on a number line: 95% 1/3 .700 3/5 5/6 50% .200 Was that too easy? Don't worry! This app gradually gets more difficult.
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Lesson Plan
Curated OER

Finding the Percent of a Number

For Teachers 6th
In this mathematics worksheet, 6th graders find the percents of various numbers. They set up the problem, estimate, and write their response. Students also compare their answers to their estimates for each problem.
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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
EngageNY

Population Problems

For Teachers 7th Standards
Find the percent of the population that meets the criteria. The 17th segment of a 20-part unit presents problems that involve percents of a population. Pupils use tape diagrams to create equations to find the percents of subgroups of the...
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Lesson Plan
EngageNY

Counting Problems

For Teachers 7th Standards
Solving these percent problems is a matter of counting. Pupils find percents by counting the number of events that meet the criteria and the total number of possibilities. Participants create the ratio and convert it to a percent to...
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Worksheet
Curated OER

Finding Percent Change

For Students 9th - 11th
In this percent of change worksheet, learners determine the percent of increase and the percent of decrease.  This two-page worksheet contains 24 problems.  Answers are provided on the last page.
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Lesson Plan
National Council of Teachers of Mathematics

National Debt and Wars

For Teachers 9th - 12th Standards
Take a functional approach to the national debt. Learners collect information about the national debt by decade and plot the data. They determine whether an exponential curve is a good fit for the data by comparing the percent changes...
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Worksheet
Mathed Up!

Ordering Fractions, Decimals, and Percentages

For Students 3rd - 5th Standards
Give scholars the opportunity to show what they know about ordering fractions, decimals, and percents with a five-page, eight-problem independent practice. With clear instructions and supportive advice, learners are bound for a...
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Assessment
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Inside Mathematics

Two Solutions

For Teachers 9th - 12th Standards
Many problems in life have more than one possible solution, and the same is true for advanced mathematics. Scholars solve seven problems that all have at least two solutions. Then three higher-level thinking questions challenge them to...
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Worksheet
Curated OER

Finding A Percentage

For Students 6th - 8th
Helpful after a lesson on percentages, this activity can reinforce the steps and formulas necessary for finding percentages. Students calculate the percent one number is of another, and then the percent of change (increase or decrease)...
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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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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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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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Lesson Plan
Illustrative Mathematics

Kendall's Vase - Tax

For Teachers 6th - 7th Standards
Practice sales tax when using the activity with three solution choices. Learners can use a percent table, benchmark percent, or solve by calculating. Solutions don't show how to multiply by the decimal, but method can be added in. Great...
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Worksheet
Curated OER

Finding Percents of a Number

For Students 5th - 6th
In this percents activity, students find the values of each percent and number. Students solve forty percent value problems. Students write their answers in the provided space.
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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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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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