Activity
Oswego City School District

Regents Exam Prep Center: Practice With Proportions

For Students 9th - 10th Standards
The learning activity consists of practice problems and word problems that investigate proportions. Detailed explanations are included.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Solving Systems by Multiplying Both Equations

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving systems by multiplying both equations by a constant to eliminate a variable.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Solving Rational Equations Using the Lcd

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving rational equations using the LCD of the denominators to eliminate them.
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.
Lesson Plan
PBS

Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf]

For Teachers 3rd - 8th
A comprehensive lesson on algebraic thinking where students create and identify patterns using proportional reasoning. Research based, this lesson includes technology connections, items for discussion, and extension activities.
Unit Plan
Math.com

Math.com: Proportions

For Students 9th - 10th Standards
This lesson explains proportions along with the formula to determine if the ratios are equal. An interactive practice activity is included.
Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Solving a Ratio With & Without a Diagram

For Students 9th - 10th Standards
A student is searching for a solution to a ratio question without using a diagram. Dr. Math helps to break it down both with and without a diagram. An understanding of fractions, multiplication, and basic algebra is necessary to get this...
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.
Activity
Wyzant

Wyzant: Proportion Calculator

For Students 9th - 10th Standards
Students enter problems into a proportion calculator to see the solutions. The calculator solves proportions using cross product properties.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Rational Equations Using Proportions

For Students 8th - 9th
[Free Registration/Login may be required to access all resource tools.] Learn how to solve rational equations using proportions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Clearing Denominators in Rational Equations

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn how to solve rational equations by clearing denominators. Students examine guided notes, review guided practice, watch instructional...
eBook
Math Planet

Math Planet: Algebra 1: Calculating With Percents

For Students 9th - 10th
Provides examples and a video lesson that illustrates how to solve percent problems.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Graphs of Linear Models of Direct Variation

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Students will write, graph, and solve direct variation models for real-world problems. Students examine guided notes, review guided practice, study vocabulary, watch...
Whiteboard
ClassFlow

Class Flow: Proportions

For Teachers 6th - 8th Standards
[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...
Unknown Type
Wyzant

Wyzant: Proportions Basics Worksheet

For Students 9th - 10th Standards
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.
Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Variation

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains direct and inverse variation. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have been...
Unit Plan
Department of Defense

Do Dea: Algebra 1: Semester 1: Equations

For Students 9th - 10th
A learning module through which students learn about equations including the following: Translating words into equations and equations into words, The Properties of Equality to help solving equations, Techniques for solving simple...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Proportions

For Students 9th - 10th Standards
Find a quick, concise explanation of proportions. An example is given and clearly explained.
Handout
Purple Math

Purplemath: Proportions: Introduction

For Students 6th - 8th Standards
Explains the basics and terminology of proportions.
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: Algebra: Rational Equations Using Proportions

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Use cross products and LCDs to solve rational equations.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Applications Using Linear Models

For Students 6th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students use problem-solving strategies and a plan to solve real-world dilemmas. Students watch a video tutorial, explore guided notes and attempt...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Scale and Indirect Measurement Applications

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Use map scales and proportions to solve for unknown distances.
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Algebra: Ratio

For Students 5th - 6th Standards
Explore word problems about ratios and watch and listen to all the steps needed to solve.