Curated OER
Using Random Sampling to Draw Inferences
Emerging statisticians develop the ability to make inferences from sample data while also working on proportional relationships in general. Here, young learners examine samples for bias, and then use random samples to make...
Curated OER
Punch Mix-up
Fifth graders discuss the relationship between equivalent fractions, ratios, and proportions. In this fraction lesson, 5th graders answer questions about a punch mixture in order to find the ratio of ingredients.
Curated OER
Origami Cube
Students compare two lengths using the area of a square. In this geometry lesson, students solve problems using ratio and proportion of the two shapes. They solve equations by taking the square root of both sides.
Curated OER
Spin Your Turbines
Learners relate electrical power and how it works to math. In this geometry lesson, students analyze how a hydroelectric plant works and calculate the amount of electricity that is produced by a typical generator. This lesson uses...
Curated OER
Math: "Scales"
Third graders investigate ratios and rates. In this third grade mathematics lesson plan, 3rd graders identify equal ratios and rate and test for proportionality. This lesson plan is created to be use in conjunctions with a...
Curated OER
All About Ratios
Students investigate the use of multiplication and division of whole numbers to solve problems including equivalent ratios and rates.
Curated OER
What's My Ratio?
Students investigate ratios of various objects. For this ratios of various objects lesson, students draw pictures on graph paper and then dilate or shrink the image. Students determine the ratio of their pictures. ...
Curated OER
A Matter of Proportion
Students measure the relative heights of the mosaic giraffe and its trainer and compare their proportions to an actual giraffe and zoo trainer.
Curated OER
Ratios (Cost of a Habit)
Students consider an individual habit and its cost. They study ratios and proportions, and use that knowledge to calculate the cost of a habit over extended periods of time. write a detailed comparison of the costs.
Curated OER
Ratio
Students calculate the ratio and apply it to construction. In this geometry lesson plan, students convert between different units and use decimals and fractions interchangeable. They find the fraction of a given amount using the...
Illustrative Mathematics
Buying Protein Bars and Magazines
Packing for a trip? This activity allows learners to decide how many magazines and protein bars they can buy with twenty dollars. They can organize their work in a chart to track how many items they can purchase. There are two different...
Curated OER
Hybrid Vehicles: Cut Pollution and Save Money
Math and science meet in this lesson on hybrid electric automobiles. This 24-page resource provides everything you need for teaching a lesson that compares the use of internal combustion engines to hybrid electric engines. Participants...
Curated OER
Dried Meat
Learners investigate the traditional method of drying meat used by Native Americans. They apply math concepts such as ratio, proportion, percent, and scientific notation to determine the amount of meat the is dried from an animal using...
Curated OER
Currency Exchange
Students investigate the currency exchange rate. In this middle school mathematics lesson, student use proportions to exchange between the U.S. dollar and the euro. Students come up with a product they would like to buy and...
Curated OER
Proportions
Seventh graders participate in a lesson that focuses on having them solve different proportions. The lesson includes an example that the teacher can work from in order to deliver direct instruction.
Curated OER
Proportions in Stories
Students solve problems dealing with ratios and proportions. In this algebra instructional activity, students rewrite word problems using equations and symbols. They correctly convert between percents and decimals.
Curated OER
Ratios
Sixth graders investigate the concept of ratios and how they can be used to represent the comparison of quantities. The lesson is taught using a table or graph to compare two categories of data.
National Research Center for Career and Technical Education
Information Technology: Photoshop Scale
Scaling is a practical skill as well as a topic to be addressed throughout the Common Core math standards. You are given three different presentations and a detailed teacher's guide to use while teaching proportion, as well as practice...
Curated OER
How Fast is Usain Bolt?
Revisit the 2012 Summer Olympics by having seventh graders calculate the unit rate sprinting speed of the 100-meter gold medal winner.
Curated OER
Lessons for Beginner Atlatl Users
Ninth graders research weapons of the Aboriginal people and throw a dart with and without the use of an atlatl. In this cross curricular lesson, 9th graders research the weapons of the Aboriginal people. They throw darts with and without...
Curated OER
Skittle Math
In this skittle math worksheet, young scholars sort skittles by color and create a bar graph for each color of skittle. Students also answer comparison, ratio, and relationship questions about the skittles.
Curated OER
Ratios
Middle schoolers identify ratios to compare quantities and understand proportions. In this math lesson plan, students work in groups and use facts from the Holocaust to calculate ratios and percentages.
Curated OER
Solving Problems with Proportions
Seventh graders explore the concept of proportions. In this proportion lesson, 7th graders play a review game involving whiteboards. Students work in groups to solve a given proportion the fastest. Students also work in pairs to solve...
Curated OER
Proportionality: The X-Plane Generation
Students meet NASA researchers who describe the relationship between force, energy and motion. They discuss how NASA's experimental X-plane is being tested to make space travel more reliable and show how proportionality and ratios are...