Curated OER
H2O2 Decomposition Lab I
Young scholars conduct an experiment to determine how much hydrogen peroxide (H2O2) is actually in a store-bought solution of H2O2.
CK-12 Foundation
Ck 12: Arithmetic: Fractions as Percents Grade 7
[Free Registration/Login may be required to access all resource tools.] Write fractions as percents by using proportions and equal ratios.
CK-12 Foundation
Ck 12: Arithmetic: Decimals as Percents
[Free Registration/Login may be required to access all resource tools.] Write percents as decimals and decimals as percents
Math Planet
Math Planet: Pre Algebra: Ratios and Percent: Rates and Ratios
Explains what rates and ratios are and how they are different. Shows how to solve an example problem about ratios and presents a video demonstrating how to show a ratio as a fraction or a decimal. [1:52]
PBS
Pbs: The Lowdown: Percents Combined: Proportional Relationships With Multistep Ratio and Percent Problems
Learn how to calculate sale price when combining two "percent-off" discounts in this video from KQED. In the accompanying classroom activity, students develop and share a variety of strategies, including modeling with a 10 x 10 grid to...
Khan Academy
Khan Academy: Converting Percents & Fractions
Practice writing percents as fractions and fractions as percents. For example, convert 30% to a simplified fraction. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
BBC
Bbc Skillswise: Percent and Fractions: Ratio and Proportion
Activities and factsheets exploring ratios and proportions in everyday life. Interactive, colorful, and fun.
CK-12 Foundation
Ck 12: Arithmetic: Fractions as Percents Grade 6
[Free Registration/Login may be required to access all resource tools.] Convert given fractions into percentages.
CK-12 Foundation
Ck 12: Arithmetic: Conversion of Decimals, Fractions, and Percent
[Free Registration/Login may be required to access all resource tools.] Identify equivalent ratios as fractions, decimals, and percents.
Khan Academy
Khan Academy: Converting Decimals to Percents
Practice expressing a decimal like 0.546 as a percent. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Converting Percents to Decimals
Practice expressing a percent like 12.3% as a decimal. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Relating Decimals, Fractions and Percent
Get independent practice relating ratios, decimals, fractions and percents. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
CK-12 Foundation
Ck 12: Arithmetic: Percents Grade 7
[Free Registration/Login may be required to access all resource tools.] Recognize a percent as a ratio whose denominator is 100.
CK-12 Foundation
Ck 12: Arithmetic: Percents as Fractions
[Free Registration/Login may be required to access all resource tools.] Write percents as fractions in simplest form
Khan Academy
Khan Academy: Finding Percents
Find a percent of a quantity as a rate per 100; solve problems involving finding the whole, given a part and the percent. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
CK-12 Foundation
Ck 12: Arithmetic: Percents Grade 8
[Free Registration/Login may be required to access all resource tools.] recognize and write percents as part of a whole out of 100.
Education Place
Houghton Mifflin: Eduplace: Extra Practice Quiz Percent as a Ratio
Find the percent using a ratio and find a ratio using a percent. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try again then you are told the correct answer....
AAA Math
Aaa Math: All About Percents and Ratios
This AAA Math tutorial covers calculating percents, relationships of percents to fractions and decimals, and uses of percents.
Mangahigh
Mangahigh: Number: Percent Increase and Decrease Calculator
Students learn about the concept of percent change by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Ratios and Unit Rates
A guide to support parents as they work with their students with ratios and unit rates.
Shmoop University
Shmoop: Ratios & Percentages: Converting Decimals to Percents
The mathematics tutorial examines how to convert decimals to percents. Students learn about the concept through notes, examples, and practice problems.
Shmoop University
Shmoop: Ratios & Percentages: Converting Fractions to Percents
The mathematics tutorial examines how to convert fractions to percents. Students learn about the concept through notes, examples, and practice problems.
Better Lesson
Better Lesson: Show What You Know + Equivalency
What do students understand? What gaps do they have in their understanding? How are fractions, decimals, and percents connected?
National Council of Teachers of Mathematics
The Math Forum: Calculating Sales Tax
Dr. Math is asked about calculating sales tax. A quick and easy to follow explanation of how it works using fractions, decimals, ratio, and percent.