PBS
Pbs Learning Media: Scaling Up Photographs
In this Cyberchase video segment, Bianca volunteers to take over an important job at a copy shop. She must make a life-size copy of a photo of the King of Sloovoonia.
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...
Texas Instruments
Texas Instruments: Why Aren't There More Reds in My Bag?
Students use small bags of M&M's to make predictions, gather data, and display color distribution results in a circle graph. They explore the concept of ratios and sample size.
Texas Instruments
Texas Instruments: Follow the Golden Rule
Students find ratios and calculate measures of central tendency for sets of data. They understand the concept of the Golden Ratio. They use box-and-whisker plots to analyze data.
Texas Instruments
Texas Instruments: Ratios in Regular Polygons
In this activity, students use linear measurement and calculators to investigate the ratios between corresponding parts of regular polygons.
Texas Instruments
Texas Instruments: Smart Shoppers
In this activity, students will compare ratios with different denominators, and then with common denominators. They will also find unit rates.
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: The Golf Ball Challenge
In this activity, students will measure the bounce heights of golf balls dropped from a height. They examine the geometric sequence in the successive bounce heights and determine the constant or common ratio and the rate of decay of the...
Texas Instruments
Texas Instruments: Fractions and Skittles
Students will predict how many of each color will be in one pack of Skittles before they open the package. Once they open the package, they will determine how close their predictions are to the actual amount. Students then will come up...
Texas Instruments
Texas Instruments: Math Today Wing Tabs Save Fuel
Using the USA TODAY Infograph, 'Wing tabs save fuel', ratios and proportions will be used to explore the concept of similarity between a drawing/model and the actual dimensions. The effects of dilation (size change) on an image and...
Texas Instruments
Texas Instruments: Handy Reflections
The purpose of this investigation is to: Revise plotting points on the Cartesian plane; Use and understand aspect ratios; Improve estimation skills; Use a spreadsheet or a graphing calculator to draw a graph; Learn how to reflect lines...
Texas Instruments
Texas Instruments: Graphs and Fractions
Have students draw squares on graph paper and half some of the squares on the outside. Number all the squares and continue numbering with the halfs. Students are then instructed to create their own ratios such as: 4 halves to eight...
PBS
Pbs Learning Media: Cyberchase: Catching the Kidnapper
In this video segment from Cyberchase, the CyberSquad and Digit construct a physical profile of the person who kidnapped Choocroca, a giant cybercrocodile. [2:49]
Primary Resources
Primary Resources: Ratio and Proportion
A collection of teacher resources to aid in teaching and reviewing ratio and proportion in math. There are worksheets, PowerPoint presentations, activities, and smartboard activities available for the teacher to download.
Oswego City School District
Regents Exam Prep Center: Practice With Ratios
The learning activity consists of word problems that investigate ratios. Detailed explanations are included.
Other
Cpa class.com: Ratios for Financial Statement Analysis
This site summarizes the most common financial statement analysis ratios and shows the formulas for calculating them. Click on "Annual Report Project" for additional related links.
Other
Helping With math.com: Ratios and Unit Rates
This site contains a instructional activity about ratios and unit rates as well as guided and independent practice for students to review the skills.
Saddleback College
Algebra2 Go: Prealgebra
The resource consists of comprehensive learning tools such as class notes, video lectures, and templates through which students can review prealgebra topics.
Indiana University
Indiana University: Area 10 Mathematics and Technology: Graphing Ratios
Activities to explore writing ratios, graphing ratios and using ratios to solve problems. Both a teacher and student guide are included.
Texas Instruments
Texas Instruments: Math Today Ballooning Inside the Box
In this activity Using the USATODAY infograph, "Ballooning inside the box", students will explore geometric relationships using similar triangles. Identifying triangles with two pairs of congruent angles to explore similarity properties...
PBS
Pbs Teachers: Math Space Odyssey: How Much Do You Weigh in Outer Space?
Demonstrate the ability to apply the use of decimals, fractions, ratios and proportions to situations based upon given information about planets in the solar system.
![Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf] Lesson Plan](https://content.lessonplanet.com/knovation/original/114246-c0ff81bc865fdf767397fcd7c31f2652.jpg?1661409083 "Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf] Lesson Plan")
PBS
Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf]
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.
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...
Scholastic
Scholastic: Study Jams! Math: Algebra: Ratio
Explore word problems about ratios and watch and listen to all the steps needed to solve.