Lesson Plan
Curated OER

Map Adventures

For Teachers 3rd - 4th
Young scholars explore the relationship between a scale drawing and actual distance. In this mapping lesson plan, students use an amusement park map to determine distances and what they would be like in real life.
Interactive
Curated OER

Similar Figures

For Students 7th - 10th
In this similar figures instructional activity, students identify the meaning of similar, corresponding sides, and congruent.  They use proportions to find the length of a missing side.  Students dilate given figures according...
Worksheet
Curated OER

The Hand of Chandra!

For Students 9th - 12th
In this nebula worksheet, students read about the Chandra X-ray Observatory that captured the given image of a pulsar and its nebula. Students solve 3 problems including using similar triangles and proportions to find the image width,...
Lesson Plan
Curated OER

Mixing Up Ratios

For Teachers 9th - 10th
Students solve problems of ratio and proportions using hands on. In this algebra lesson, students vary the concentration of a fruit drink using parts of a ratio.
Lesson Plan
Curated OER

One Size Fits All?

For Teachers 3rd - 5th
Students describe the differences between an estimate and a guess. They create reasonable estimates based on comparison and activities. Students explain how estimation is helpful in showing the relative size on a scale. They also...
Assessment
Noyce Foundation

Photographs

For Teachers 6th - 7th Standards
Scaling needs to be picture perfect. Pupils use proportional reasoning to find the missing dimension of a photo. Class members determine the sizes of paper needed for two configurations of pictures in the short assessment task.
Assessment
EngageNY

End-of-Module Assessment Task: Grade 7 Mathematics Module 4

For Students 7th Standards
Asses the class to determine their knowledge of proportional relationships involving percents. Class members work through the nine-question assessment with a variety of percent problems. The multi-step problems involve simple interest,...
Worksheet
Curated OER

Proportional Parts Homework

For Students 9th - 10th
In this geometry activity, students differentiate between similarity and proportion. They use scale factor as they solve for the different proportions. There are 15 questions.
Assessment
Concord Consortium

Two Pounds to Go

For Students 9th - 12th Standards
How hard can it be to measure out two pounds? A short performance task introduces a situation where a balance scale is broken. It gives a method for measuring out two pounds and asks learners to evaluate the procedure. They must prove...
Assessment
EngageNY

Mid-Module Assessment Task: Grade 7 Mathematics Module 4

For Students 7th Standards
Assess the ability of the class to solve percent problems with an assessment that covers a variety of percent problems from basic to multi-step. Pupils make connections between percent problems and proportional thinking to complete...
Lesson Plan
Bowland

Design the Mascot

For Teachers 6th - 9th
Explore how resizing an object affects its area. The set of lessons challenges young mathematicians to design a mascot for electronic devices. These designs undergo resizing to determine how scale factors of dilation affect area.
Assessment
Achieve

Framing a House

For Students 6th - 10th Standards
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.
Assessment
Noyce Foundation

Truffles

For Teachers 6th Standards
Knowing how to scale a recipe is an important skill. Young mathematicians determine the amount of ingredients they need to make a certain number of truffles when given a recipe. They determine a relationship between ingredients given a...
Assessment
Achieve

Greenhouse Management

For Teachers 8th - 10th Standards
Who knew running a greenhouse required so much math? Amaze future mathematicians and farmers with the amount of unit conversions, ratio and proportional reasoning, and geometric applications involved by having them complete the...
Assessment
Curated OER

Dental Impressions

For Teachers 7th - 10th Standards
What an impressive task it is to make dental impressions! Pupils learn how dentists use proportional reasoning, unit conversions, and systems of equations to estimate the materials needed to make stone models of dental impressions....
Lesson Plan
Curated OER

Scaling Down Art

For Teachers 7th - 8th
Students change the scale of a work of art using ratios, percentages, and proportions. While this is technically an art lesson, there is quite a bit of mathematics involved in converting to the correct scale.
Lesson Plan
Curated OER

Planets in Proportion

For Teachers 6th - 12th
Students apply estimation strategies and proportional reasoning to determine a scale comparing the planetary bodies to Earth. They convert measurements of time and distance using scientific notation. Both the metric and customary units...
Worksheet
Curated OER

A Geometry Worksheet - Similar Triangles

For Students 9th - 12th Standards
In this similar triangles activity, students find the scale factor of 6 sets of similar triangles. Students find the scale factor of two similar triangles given a sketch with measurements. Students use proportions to find a missing side...
Lesson Plan
Curated OER

Scale

For Teachers 9th - 10th
Students apply concepts of scales to solve problems. In this geometry lesson, students solve real world problems using scales, proportions and ratios. They predict the actual size of a model given the scale drawings.
Worksheet
Curated OER

Using Similar Polygons

For Students 10th
For this geometry worksheet, students use the properties of similar polygons to find the indicated missing length or the scale factor. The two page worksheet contains twenty-two questions. Answers are included.
Worksheet
Curated OER

Similar Figure Word Problems

For Students 7th - 10th
In this similar figure worksheet, students use similar figures and indirect measurement to determine distance.  They use proportions of similar figures to determine scale figures.  This two-page worksheet contains 8...
Lesson Plan
Curated OER

Solving Problems Using Proportions

For Teachers 6th - 8th
In this math worksheet, students solve the problems that are in word form in order to find the proper type of proportion for the solution.
Lesson Plan
Curated OER

Math: "Scales"

For Teachers 3rd
Third graders investigate ratios and rates.  In this third grade mathematics lesson, 3rd graders identify equal ratios and rate and test for proportionality.  This lesson is created to be use in conjunctions with a particular...
Lesson Plan
Math Can Take You Places

Picture This

For Teachers 6th - 7th Standards
Engage scholars in a ratio lesson that employs real-world scenarios. Learners will compare the length and width of pictures and use a table to identify ratio patterns. They watch "Math Can Take You Places" and discuss jobs that use math...

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