McGraw Hill
Glencoe: Self Check Chapter Test Ratio, Proportions, and Percent 20 Questions
The interactive assessment examines ratios, proportions, and percents. Students complete 20 questions created by Glencoe. Hints and solutions are included.
McGraw Hill
Glencoe: Self Check Chapter Test Ratio, Proportion, and Percent
Use Glencoe's randomly generated self-checking chapter test to assess your knowledge on ratios, proportions, and percents. Each question has a "Hint" link to help. After completing the test students can click the "Check It" button and...
TeachEngineering
Teach Engineering: An Inflated Impression of Mars
The purpose of this activity is to use scaling in order to give students an idea of the size of Mars in relation to the Earth and the Moon as well as the distance between them. The students will have to calculate dimensions of the scaled...
TeachEngineering
Teach Engineering: Decimals, Fractions & Percentages
Students learn about and practice converting between fractions, decimals and percentages. Using a LEGO MINDSTORMS NXT robot and a touch sensor, each group inputs a fraction of its choosing. Team members convert this same fraction into a...
Math Playground
Math Playground: Word Problem Videos
This lesson includes several sets of word problems for student practice. Each problem has a video that demonstrates how to reach the solution.
Math Playground
Math Playground: Thinking Blocks
This lesson teaches students how to use colored blocks to model word problems. There are several sets of problems each for addition / subtraction, multiplication / division, and ratio word problems.
Math Is Fun
Math Is Fun: Solving Word Questions
A tutorial that explains how to solve word problems. It points out key words that signal operations or what is being measured, and wording that is confusing and needs to be simplified. Presents lots of examples, both simple and complex,...
McGraw Hill
Glencoe: Self Check Chapter Test Ratio, Proportion, and Percent
The interactive assessment examines ratios, proportions, and percents. Students complete 18 questions created by Glencoe. Hints and solutions are included.
Other
Nikon Corporation: Feel Nikon: Universcale
Amazing site examines size from the most elementary particle to the extremities of space, and everything in between. This interactive feature will encourage you to look differently at your size in relation to the rest of the universe.
PBS
Pbs Learning Media: Aiming for the Basketball Hall of Fame
In this video segment from TV 411, two Atlanta Hawks players plan a driving route to reach the Basketball Hall of Fame. They use map scales to estimate their travel distances.
PBS
Pbs Learning Media: Calculating Speed
In this Cyberchase video segment, the CyberSquad calculates the speed of each broom.
Discovery Education
Discovery Education: Architects in Action
Through this lesson, students will learn how to use ratios to create a scale drawing of their classroom's floor plan. It provides adaptations, discussion questions, assessment rubric, and suggested readings to help develop students'...
University of South Florida
Fcat: Baseball Proportion: Teacher Notes
Students learn about proportions using regular and souvenir baseball bats. This site contains a complete lesson plan, which is available in a printable version.
TED Talks
Ted: Ted Ed: Why the Shape of Your Screen Matters
In this video, Brian Gervase explains how the size a of television screen affects how much of a movie people are able to watch. [3:33] Followed by a short quiz and a list of additional resources to explore.
Cuemath
Cuemath: Proportion
A comprehensive guide for learning all about proportions with definitions, proportion formulas, types of proportions, properties of proportions, the difference between ratio and proportion, solved examples, and practice questions.
OER Commons
Oer Commons: Scale
Seventh graders will explore scale and use it to find measurements in scale drawings.
OER Commons
Oer Commons: Measuring Circles
Seventh graders will measure the circumference and diameter of round things in the classroom and discover the ratio pi. They will see that the ratio of a circle's circumference to its diameter can be used to solve for the circumference...
AAA Math
Aaa Math: How to Determine a Ratio
Learners practice writing ratios in lowest terms. The resource consists of a tutorial and self-check practice problems.
University of Waterloo (Canada)
Centre for Education in Mathematics and Computing: Ratio and Rate [Pdf]
Learners explore the concepts of rate and ratio in a variety of problem-solving situations. Worksheets contain definitions and visual representations of concepts. Link to related ratio game. Other skills include measurement, data...
University of South Florida
Fcat: Two for One Box Company: Teacher Notes
At this site learners use proportions to explore how volume is effected by dimension changes. This hands-on activity can be done individually or in pairs.
Texas Instruments
Texas Instruments: Go for the Gold
Students explore and use the concept of ratio in a real-world situation. They will make judgments regarding accuracy and precision of measurement.
Texas Instruments
Texas Instruments: What's My Ratio?
In this activity, students use linear measurement and calculators to investigate proportionality and determine the constant ratio between similar figures.
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]
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Similarity
This site contains a lesson plan for high school age students. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.