Activity
Wyzant

Wyzant: Proportion Basics

For Students 9th - 10th Standards
WyzAnt provides an explanation and examples on solving proportions. Proportions practice problems and a proportion calculator are included in this lesson.
Interactive
PBS

Pbs Learning Media: Ratio and Proportional Reasoning: Food Labels

For Teachers 3rd - 8th
Learn how to use fractions to interpret food labels and make healthy eating choices.
Lesson Plan
OER Commons

Oer Commons: Introduction to Ratio Tables

For Teachers 7th
Seventh graders use ratio cards to find equivalencies and form partnerships for the week. As a class, 7th graders discuss and decide on classroom norms. Give each student a ratio card. Instruct students to find a classmate whose card has...
Lesson Plan
OER Commons

Oer Commons: Multiplication Properties of Equality

For Teachers 7th
Seventh graders use the multiplication property of equality to justify their solution to a ratio problem.
Whiteboard
ClassFlow

Class Flow: Ratio

For Teachers 9th - 10th Standards
[Free Registration/Login Required] In this flipchart, students apply their understanding of ratio, percent, and direct proportion in various situations. Students solve problems involving ratio and proportion with similar figures and with...
Whiteboard
ClassFlow

Class Flow: Introduction to Ratio and Proportions

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] This flipchart introduces the concept of ratios and proportions using a variety of visuals and manipulatives.
Handout
National Council of Teachers of Mathematics

The Math Forum: Ratios and Fractions

For Students 3rd - 8th Standards
A seventh-grade student is having trouble understanding ratios, fractions, and simplest form. Dr. Math to the rescue! Real-world, easy to grasp examples.
Lesson Plan
University of South Florida

Fcat: The Shadow Knows (Ratio, Proportion & Measurement)

For Teachers 9th - 10th
Students use their height and the length of the shadow to determine the height of buildings. A great outdoor activity to learn about proportions and ratios.
Interactive
Quia

Quia: Ratios and Proportions

For Students 6th - 8th Standards
A series of questions about ratios and proportions is presented in a millionaire game format.
Whiteboard
ClassFlow

Class Flow: Solving Proportions

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This lesson introduces the cross product method for solving proportions. It also connects the mathematical content to real-world applications.
Website
Other

Nm Learning Games Lab: Math Snacks

For Students 9th - 10th
Games and videos, each accompanied by guidelines for teachers and students, cover math topics such as proportion, ratio, number line, scale, and measurement. Downloads are available for iPad, iPhone, and iPod Touch.
Handout
CK-12 Foundation

Ck 12: Geometry: Ratios and Proportions Study Guide

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This study guide reviews ratios, proportions, and cross-multiplication.
eBook
Math Planet

Math Planet: Algebra1: Ratios and Proportions and How to Solve Them

For Students 9th - 10th
Provides examples and a video lesson that explains ratios and proportions and shows how to solve them.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Proportion Properties

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to set up and solve proportions.
Handout
Purple Math

Purplemath: Ratios

For Students 6th - 8th Standards
Explains the basic terminology and formatting of ratios, and demonstrates how to solve typical exercises.
Unit Plan
Khan Academy

Khan Academy: Interpreting Graphs of Proportional Relationships

For Students 6th - 8th Standards
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.
Unit Plan
Khan Academy

Khan Academy: Writing Proportional Equations

For Students 6th - 8th Standards
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.
Unit Plan
Khan Academy

Khan Academy: Proportion Word Problems

For Students 5th - 7th Standards
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.
Unit Plan
Khan Academy

Khan Academy: Solving Proportions

For Students 6th - 8th Standards
Practice solving basic proportions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Writing Proportions

For Students 6th - 8th Standards
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.
Unit Plan
CK-12 Foundation

Ck 12: Chemistry: Mass Ratio Calculation

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Explains mass ratio definition and mass ratio calculations.
Unit Plan
University of Minnesota

U Mn: Gender Ratios in Global Migration: Men Who Migrate, Women Who Wait?

For Students 9th - 10th
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...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Proportion Properties

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Apply proportion properties.
PPT
Sophia Learning

Sophia: Equivalent Ratios: Lesson 5

For Students 7th - 8th Standards
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."

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