Wyzant
Wyzant: Proportion Basics
WyzAnt provides an explanation and examples on solving proportions. Proportions practice problems and a proportion calculator are included in this lesson.
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.
The Math League
The Math League: Ratio and Proportion
This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Cake Recipe Ratio
Dr. Math has to go into the kitchen to solve this real-world problem. A student is looking for a solution to a ratio problem about baking a cake. You'll need to stir up your knowledge of ratios, fractions, decimals, proportions, and...
PBS
Pbs Learning Media: Math + Arts: Dragon Scales
In this lesson plan, students create a class mural by using scale, ratio, and proportion. Media resources and teacher materials are included.
Other
Nm Learning Games Lab: Math Snacks
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.
PBS
Pbs: Real World Proportional Relationships: Gender Wage Gap
Using this infographic, learn how wage equity today compares with data from 50 years ago, at the dawn of the equal pay movement. The accompanying classroom activity invites students to explore the change in the gender wage gap from 1965...
Alabama Learning Exchange
Alex: Thirsty for Ratios
In this lesson, the students will learn what a ratio is and how it can be used in a comparison. In this lesson, students will also determine how to combine a sports drink in powder form and water to make enough for a whole football team....
Cool Math
Coolmath: Coolmath4kids: Dirt Bike Proportions
Find the number which makes the fractions equal in this multiplayer race!
Lawrence Hall of Science
The Math Page: Trigonometry
Concepts in Trigonometry are explained and illustrated here by a member of the math department at Borough of Manhattan Community College.
E-learning for Kids
E Learning for Kids: Math: Dance Performance: Position on a Map
This interactive website allows students to practice their map skills including scale factors on a map.
National Council of Teachers of Mathematics
The Math Forum: Ratios and Fractions
A seventh-grade student is having trouble understanding ratios, fractions, and simplest form. Dr. Math to the rescue! Real-world, easy to grasp examples.
National Council of Teachers of Mathematics
The Math Forum: Means Proportional and Geometric Means
Dr. Math helps a student discover the meaning of the mean proportional of two numbers. Detailed explanation with examples.
Ducksters
Ducksters: Kids Math: Ratios, Fractions, and Percentages
This page explores how ratios can be written as fractions. The site also discusses proportions and reducing ratios with problems and examples.
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...
Free Math Help
Free Math Help: Direct Variation
The discussion examines direct variation. Students learn about the math concept through definitions and sample exercises.
Other
The Futures Channel: Proportional Reasoning
"Connecting learning to the real world" is the goal of the Futures Channel. Through the use of short videos, teachers can integrate real-world examples of how math and science are used in everyday life. Complete teaching guidelines...
Math Planet
Math Planet: Algebra 1: Calculating With Percents
Provides examples and a video lesson that illustrates how to solve percent problems.
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.
Shmoop University
Shmoop: Ratios & Percentages: Solving Proportions
Students learn how to solve proportions. 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.
CK-12 Foundation
Ck 12: Measurement: Scale Distances or Dimensions
[Free Registration/Login may be required to access all resource tools.] Recognize unit scale as a ratio between units of measure of scale dimension to actual dimension.
PBS
Pbs Learning Media: Cyberchase: Bianca Gets in Gear
Bianca visits a bike shop and learns how bicycle gears work in this Cyberchase video segment. [3:26]
University of Cambridge
University of Cambridge: Maths and Sports: The Fastest Cyclist
As a coach for a long distance cyclist, can you come up with a race plan to help him win his ride from Lands End to John o' Groats? This activity is a more challenging follow-on from Nutrition and Cycling and is aimed at secondary...