Curated OER
Similar Triangles
Students differentiate between similar and congruent triangles. In this geometry lesson, students identify the missing side and angle of a triangle. They identify the different ratio and proportion of the sides of a triangle.
Curated OER
Using Proportions Homework
In this geometry worksheet, students identify simple ratio and reduce to the simplest forms. They find the measure of missing sides and angles. There are 20 questions.
Curated OER
Ratio
Students calculate the ratio and apply it to construction. In this geometry instructional activity, students convert between different units and use decimals and fractions interchangeable. They find the fraction of a given amount...
Illinois State Board of Education
Solar System
Aspiring astronomers solve problems involving mixed units of the same attribute, including time, money, length, and area. They convert large numbers into scientific notation, then compute and compare ratios to explain why drawing...
Curated OER
Currency Exchange
Students investigate the currency exchange rate. For 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
Ratios, Proportions, and Cross-multiplication
Students use cross-multiplication to find the unknown respiration rate of an astronaut. In this multiplication lesson plan, students also use the same process to find missing values in proportions.
Curated OER
Proportional Ratios
In this proportional ratios worksheet, 9th graders solve 10 different problems that include sets of fractions in each. First, they determine if the product of the means is equal to the product of the extremes. Then, students solve each...
Curated OER
Comparing Ratios
In this comparing ratios worksheet, students solve and complete 3 different problems using the screens shown. First, they write a ratio that compares the shaded part to unshaded part illustrated. Then, students use the same grid to...
Curated OER
Using Ratio to Express a Rate
In this Algebra I worksheet, 9th graders use a ratio to express a rate. The one page worksheet contains two multiple choice questions. Solutions are provided.
Curated OER
Using Proportions Self Check Quiz
In this geometry worksheet, students identify the different ratios of triangles using the theorems. They use SSS, SAS, ASA and AAS to differentiate between triangles. There are 7 questions with an answer key.
Curated OER
What Are the Odds?
Middle schoolers identify and interpret various ways of expressing probability as a decimal, fraction, percent, or ratio. They solve problems based on probability as they apply to real world applications.
Curated OER
Largest Hamburger Ever?
If a 150 lb. person can comfortably eat and digest a 1 lb. burger, then how large would the person be who can comfortably eat and digest a 350 lb. burger? For a burger that size, it would take either a large person or a class of really...
Willow Tree
Direct and Inverse Variations
Enhance pupil understanding of proportions and variable relationships by studying direct and inverse variation. Use the idea of a proportional relationship to teach direct variation. Then use a similar pattern to help individuals...
Curated OER
How Big is Barbie?
Students measure various dimensions of a male and a female dolls body and scale them proportionally to average human measurements. They calculate the appropriate scale factor (magnitude) to enlarge their doll and apply that scale factor...
Charleston School District
Equations of Linear Functions
Teaching linear function relationships using contextual information is beneficial to pupils' understanding. The lesson uses problem solving to build linear functions given different information for each problem. This is the second...
Achieve
Framing a House
If members of your class wonder where they can use the math they learn in middle school, let them discover the answer. Learners apply geometry concepts of scale and measure to calculate the costs of framing a house addition.
EngageNY
Percent of a Quantity
Visualize methods of finding percents. Classmates find a percent of a quantity using two methods including a visual model in the 26th lesson in a series of 29. By the end of the lesson, scholars find percents given a part and the whole...
Willow Tree
Dimensional Analysis
Convey to your pupils the importance of units, then show how to use dimensional analysis to perform a unit conversion. The math lesson plan includes detailed worked-out solutions to guide learners in their practice.
Dick Blick Art Materials
Start with a Circle...
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
Curated OER
Ratios
Learners 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
Side Splitter Triangles
Students investigate the side splitter theorem. For this geometry lesson, students estimate and solve problems dealing with ratios and proportions. They identify angles created by lines that are parallel.
Curated OER
Proportionality in Tables, Graphs, and Equations
Learners create different methods to analyze their data. In this algebra lesson, students differentiate between proportion and non-proportional graph. They use the TI-Navigator to create the graphs and move them around to make their...
Curated OER
Ratios
Sixth graders pariticipate in a lesson that focuses on the finding of a ratio and using it to set up a proportion in realtionship to creating a scale drawing. This is done using given problems. It would be valuable for students to have...
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.