Texas Instruments
Texas Instruments: Lifting a Lion
In this activity, students learn to solve a real-world problem. Using a toy lion and a lever, students discover how much work is needed to raise the toy lion. They use proportions to determine the force needed to lift a real lion.
CK-12 Foundation
Ck 12: Geometry: Unknown Measures of Similar Figures
[Free Registration/Login may be required to access all resource tools.] Use proportions to find unknown measures in similar figures and then apply these measures to indirect measurement.
Rice University
Rice University: Cynthia Lanius: All About Ratios
Make Texas chili as you learn about ratios in this interactive lesson. Students get immediate feedback on their responses and teachers have access to online assessment.
CK-12 Foundation
Ck 12: Geometry: Proportionality Relationships Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide looks at proportionality theorems for triangles and parallel lines intersected by transversals.
CK-12 Foundation
Ck 12: Algebra: Linear Equations Study Guide
This comprehensive study guide highlights the main terms and formulas needed to understand linear equations. Examples are included.
Better Lesson
Better Lesson: Introduction to Ratios
What is a ratio? How can we create equivalent ratios? Students work to express and extend relationships using ratios.
Math Drills
Math Drills: Fractions Worksheets
Download and print these worksheets to sharpen your skills working with fractions. Worksheets focus on modeling fractions, ratios and proportions, comparing, ordering, simplifying, converting, and order of operations.
Quia
Ixl Learning: Percents
Brush up on your math skills relating to percents then try some practice problems to test your understanding.
PBS
Pbs: Proportional Scaling
Examine some of the complexities and complications inherent in the development of a micro engine. This video focuses on how MIT researchers have to consider proportions comparing volume and surface area when factoring heat loss, taking...
PBS
Pbs: Recognize and Represent Proportional Relationships Between Quantities: Ratio, Proportion, Cross Multiply, Divide
In this Cyberchase media gallery, learn about ratio and proportion and how to use an algebraic shortcut to solve proportion problems. In the accompanying classroom activity, students play a game called the "Pom-Pom Nose Push," in which...
PBS
Pbs: The Lowdown: The Math of Trash: Percents and Proportions
Discover how percents and proportions help explain issues like climate change, composting, and zero waste in this video from KQED. In the accompanying classroom activity, students estimate the percentage of various types of trash that...
PBS
Pbs: Human Tree: Ratios
Watch as the National Museum of Mathematics creates an interesting series of images using ratios. This video focuses on the proportional relationship observed in fractals and challenges you to do some critical thinking using ratios and...
Other
Nearpod: Percent of Change
For this lesson, 7th graders will learn how to solve percent of change problems.
Other
Nearpod: Similar Figures & Proportionality
In this lesson on similar figures and proportionality, students explore how to identify if figures are similar by applying their knowledge of corresponding angles and sides.
Amby Duncan-Carr
Amby: Proporion Method to Solve Percent Problems
Examples are solved to demonstrate using proportions to solve percent problems. Exercises are provided that allow you to check your answers.
University of South Florida
Fcat: The Shadow Knows (Ratio, Proportion & Measurement)
Pupils 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.
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.
Doina Popovici
Math Play: 7th Grade Halloween Math Game
Practice calculating percents and figuring out proportions in this Halloween math game.
Other
Mathpower: Math Fundamental Assignments
Math variety of concepts, this colorful website is sure to give your students the chance show what they know. Concepts covered include rounding, division with decimals, order of operations, ratio, percent, multiplication, and division of...
Quia
Quia: Ratios and Proportions
A series of questions about ratios and proportions is presented in a millionaire game format.
Quia
Quia: Rates, Ratios, and Proportions
One or two players can play a learning game that reviews rates, ratios, and proportions.
Sophia Learning
Sophia: Using Equations to Describe Proportions: Lesson 3
This lesson explains how proportional relationships can be described using equations. It is 3 of 5 in the series titled "Using Equations to Describe Proportions."
Sophia Learning
Sophia: Using Equations to Describe Proportions
This lesson explains how proportional relationships can be described using equations.
Sophia Learning
Sophia: Using Equations to Describe Proportions: Lesson 4
This lesson explains how proportional relationships can be described using equations. It is 4 of 5 in the series titled "Using Equations to Describe Proportions."