Curated OER
Flying with Fractions
Learners test their knowledge of the Wright Brothers and their aircraft, and compute ratio of two numbers to determine the ratio between wing span and length of aircraft.
Curated OER
Learning About Ratios: A Sandwich Study
Learners engage in a lesson which provides them with a concrete introduction to the concept of ratios. They demonstrate the ability to create ratios with given substances - peanut butter and jelly.
Curated OER
Dino Long Legs
Students calculate the stride length of a walking or running animal. They use scale models of dinosaurs to calculate the leg and stride length of the animals.
Curated OER
Rates and Proportions
Students read a cookie recipe and complete a worksheet that asks them to establish ratios and proportions for various ingredients in the recipe.
Curated OER
Icing On The Cake
Eighth graders follow a recipe, focusing on the concepts of ratio and proportion, to mix a batch of icing. They decorate cupcakes in the form of a pumpkin.
Curated OER
Crazy Putty Ratio
Second graders use knowledge of measurements and ratios to mix various combinations of liquid starch and glue. They chart their ratios, make observations, and write a summary of the activity. They mix their own batch of Crazy Putty to...
Curated OER
The Shadow Knows - Measuring Other Students
Eighth graders measure height and shadow length of other students on a sunny day and develop a ratio. They apply the ratio to other students and objects using shadows to determine height.
Curated OER
Ocean Animals vs. Humans
Students use critical thinking skills to solve word problems using ratios that allow them to compare humans to ocean animals.
Curated OER
Similar or Not?
Fifth graders define the meaning of similar and congruent using concrete objects. They make similar and congruent figures using geoboards. They draw their figures on dot paper, and color their designs.
Curated OER
Population Ratios
Students access web site and record various population statistics pertaining to a county in the USA of their choice. They use this data to set up and solve ratios. They compare data to make meaning of the numbers.
Curated OER
The Shadow Knows - Measuring A Telephone Pole
Third graders attempt to determine the height of a telephone pole or tree without climbing to the top.
Government of Alberta
Learn alberta.ca: Math Interactives: Rate/ratio/proportion (Object Interactive)
This highly interactive resource uses the backdrop of digital photography to explore equivalent forms of 3-term ratios. Printable activities, solutions, and learning strategies are also provided.
Arizona State University
Asu: Chicana and Chicano Space
Provided by Arizona State University, this website is a comprehensive thematic, inquiry-based art education resource. Includes two interdisciplinary units of lessons.
PBS
Pbs Learning Media: Island of the Little
In this Cyberchase video segment, the CyberSquad is on the Island of the Little and must scale up a small boat that will fit Widgit.
PBS
Pbs Learning Media: In a Land of Giants
In this video segment from Cyberchase, the CyberSquad must scale down a large boat to escape the land of Proporciona, a land of giants.
Science Buddies
Science Buddies: How Does Ratio of Sand to Cement Affect Strength of Concrete?
Concrete is one of those things that most of us don't think about much, yet we use it every day. We walk on concrete sidewalks, drive on concrete roads, and live and work in buildings with foundations made of concrete. It is a durable...
PBS
Pbs Mathline: How Many Noses Are in Your Arm? Lesson Plan [Pdf]
Students will determine how many noses are in your arm by exploring measurement and ratio. Printable lesson.
PBS
Pbs Mathline: Alphabits Lesson Plan [Pdf]
Students are given a baggy of Alphabits cereal to explore ratios and percents. Printable lesson plan.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Proportion Playground
An interactive simulation that teaches about ratios, proportional reasoning, and unit rate by making predictions and testing proportions while designing a necklace, throwing balloons filled with paint, playing billiards, or shopping for...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Unit Rates
An interactive simulation that teaches about ratios, proportional reasoning, and using double number lines to look for patterns through interactions while shopping for fruits, vegetables, and candy and by comparing cars with different...
Other
Simple Science: Ramps and Ratios
The interactive tutorial explores ramps and ratios. Learners view and analyze images of ramps and steps to see if they conform to the requirements of the Americans with Disabilities Act. The activity has students measure vertical and...
McGraw Hill
Glencoe: Self Check Quizzes 2: Ratios
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of ratios. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It"...
McGraw Hill
Glencoe: Self Check Chapter Test Ratios and Proportions
The mathematics resource consists of an assessment with hints and solutions. Students answer questions that review ratios and proportions.
McGraw Hill
Glencoe: Self Check Quizzes Ratios 2
The randomly generated questions examine ratios. Students answer the multiple choice questions which include hints and solutions.