Math Planet
Math Planet: Algebra1: Ratios and Proportions and How to Solve Them
Provides examples and a video lesson that explains ratios and proportions and shows how to solve them.
CK-12 Foundation
Ck 12: Geometry: Proportion Properties
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to set up and solve proportions.
Purple Math
Purplemath: Ratios
Explains the basic terminology and formatting of ratios, and demonstrates how to solve typical exercises.
Khan Academy
Khan Academy: Interpreting Graphs of Proportional Relationships
Practice reading and analyzing graphs of proportional relationships. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Writing Proportional Equations
Practice writing equations to describe proportional relationships. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Proportion Word Problems
Practice setting up and solving proportions to solve word problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Solving Proportions
Practice solving basic proportions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Writing Proportions
Practice writing proportions to describe real-world situations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Chemistry: Mass Ratio Calculation
[Free Registration/Login may be required to access all resource tools.] Explains mass ratio definition and mass ratio calculations.
CK-12 Foundation
Ck 12: Geometry: Proportion Properties
[Free Registration/Login may be required to access all resource tools.] Apply proportion properties.
University of Minnesota
U Mn: Gender Ratios in Global Migration: Men Who Migrate, Women Who Wait?
This resource uses a text and graph to show how the gender ratio of international migrants - the proportion of male to female migrants - has changed over time. Its goal is to stimulate thinking about shifting gender ratios in global...
Sophia Learning
Sophia: Equivalent Ratios: Lesson 5
This lesson will introduce the means and extremes of a proportion, and demonstrate how to use cross multiplication to determine if two ratios are equivalent. It is 5 of 8 in the series titled "Equivalent Ratios."
Sophia Learning
Sophia: Equivalent Ratios: Lesson 8
This lesson will introduce the means and extremes of a proportion, and demonstrate how to use cross multiplication to determine if two ratios are equivalent. It is 8 of 8 in the series titled "Equivalent Ratios."
Mocomi & Anibrain Digital Technologies
Mocomi: Ratio and Proportion
Gives examples of ratios and proportions and how to solve them.
The Math League
The Math League: Ratio
This site gives a definition of a ratio along with two word problems. Also shows the student how to compare ratios using fractions.
Wyzant
Wyzant: Proportions Basics Worksheet
An interactive quiz from WyzAnt of 20 proportions are presented for the students to solve and then check their answers. All can be computed with simple cross-multiplying.
Sophia Learning
Sophia: What Are Ratios?
This lesson defines the term ratio. Students can look at a two-page presentation of notes and practice problems.
Other
All Elementary Mathematics: Proportionality and Ratio
A brief explanation of the mathematical relationship between ratio, proportion, and proportionality. Examples are included.
Shmoop University
Shmoop: Ratios & Percentages: Ratios & Proportions
Students learn about ratios and percentages in the tutorial. The mathematics resource consists of examples and practice problems with answers.
Free Math Help
Free Math Help: Proportions and Ratios
The tutorial investigates proportions and ratios. The lesson includes explanations on solving problems with ratios using cross multiplication.
ClassFlow
Class Flow: Proportions
[Free Registration/Login Required] This lesson contains notes and examples for instructing how to solve proportions. Begins with relations to equivalent fractions, and then gets into solving algebraically using cross products. It...
Common Core Sheets
Common Core Sheets: Ratios and Proportional Relationships 7.rp.3 Worksheets
Print or create worksheets or flashcards to assess students' understanding of how to use proportional relationships to solve multistep ratio and percent problems.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Ratios and Proportional Relationships
A guide to support parents as they work with their students in ratios and proportional relationships.
Common Core Sheets
Common Core Sheets: Ratios and Proportional Relationships 6.rp.3c Worksheets
Print or create worksheets or flashcards to assess students' understanding of ratio concepts, useage of ratio reasoning, and percentages.
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