Lesson Plan
Curated OER

Similarity and Congruence

For Teachers 9th - 12th
Students explore the concept of similarity and congruence. For this similarity and congruence lesson, students identify and verify whether or not two figures are similar, congruent, or neither. Students use postulates and theorems such...
Lesson Plan
Curated OER

Similarity and Congruence

For Teachers 9th - 12th
Students explore the concept of similarity and congruence. In this similarity and congruence lesson, students cut out strips of paper and form a triangle. Students try to prove that their triangles are congruent using the SSS theorem of...
Worksheet
Curated OER

Countdown Challenge: Shadow Sleuth

For Students 7th - 8th
In this shadow sleuth worksheet, students use proportions and indirect measurement to determine the measurement of given objects. This one-page worksheet contains three problems.
Lesson Plan
Illustrative Mathematics

Finding a 10% increase

For Teachers 6th - 8th Standards
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
Worksheet
Curated OER

Countdown Challenge: Similarity

For Students 7th - 8th
In this similarity instructional activity, students use similar rectangles to find the length of a diagonal. They use symbols and write paragraphs to explain the problem. This one-page instructional activity contains one similar problem...
Lesson Plan
Curated OER

Snake in the Grass: Capture/Recapture Activity

For Teachers 6th
Learners estimate the total number of species in Ecuador using the capture/recapture method. They collect data about each species and act as members of a science expedition to determine the total number of species by using mathematical...
Assessment
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California Education Partners

Miguel's Milkshakes

For Students 7th Standards
Moooove over, there's a better deal over there! The fourth segment in a series of eight requires individuals to determine the best unit cost for milk. Scholars calculate the least amount they can spend on a particular quantity of...
Lesson Plan
EngageNY

Special Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles

For Students 9th - 10th Standards
Why are right triangles so special? Pupils begin their study of right triangles by examining similar right triangles. Verifying through proofs, scholars recognize the three similar right triangles formed by drawing the altitude. Once...
Assessment
Noyce Foundation

Sewing

For Teachers 6th Standards
Sew up your unit on operations with decimals using this assessment task. Young mathematicians use given rules to determine the amount of fabric they need to sew a pair of pants. They must also fill in a partially complete bill for...
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.
Lesson Plan
Curated OER

Problem Solvers

For Teachers 5th - 6th
Fifth and sixth graders compare decimals to the place-value structure in the base-ten number system. They represent fractions as parts of unit wholes, as parts of a set, as locations on a number line, and as divisions of whole numbers....
Lesson Plan
Illustrative Mathematics

Setting Goals

For Teachers 6th - 8th Standards
Setting financial goals is a common occurrence in middle school that your learners can practice using this activity. They will be able to solve for how many hours Seth needs to work to save up for a skateboard, helmet, and trip. The...
Lesson Plan
Curated OER

Baseball Proportion

For Teachers 7th - 8th
Students work on different mathematical skills that align with state standards. The skill of problem solving is done with reasoning and communication is made to students through solid brain connections to the math concepts.
Worksheet
Curated OER

Pepper Problem

For Students 9th - 12th
In this secondary mathematics worksheet, high schoolers determine the solutions to a riddle which involves the selling of peppers and whose solution requires the use of ratio and proportion.  The one page worksheet contains one...
Lesson Plan
Curated OER

Australian Currency

For Teachers 7th - 8th
Students investigate currency and exchange rates.  In the middle school mathematics lesson, students use ratio and proportion to convert from Australian currency to the U.S. dollar and vice verse.  Students create their own...
Lesson Plan
Curated OER

Let's Measure

For Teachers 3rd
Third graders practice measuring different objects. They discover the concepts of ratio and proportion and practice converting numbers into the correct unit. They read stories as well to help them with the concepts.
Lesson Plan
Curated OER

Build a Skittles Graph

For Teachers 7th - 11th
Students construct a bar graph with a given set of data. They calculate the ratio and percent of the data. Students discuss alternate ways of graphing the data as well as multiple strategies to approach the task.
Worksheet
Curated OER

Family Letter and Activity: Cars, Trucks and Percents

For Students 4th - 5th
In this math activity, students will take home a letter to their parents explaining that they are studying Chapter 10: Ratio, Proportion and Percent. Then students will complete a homework activity in which they ask family and friends...
Interactive
Curated OER

Math Test Practice-Grades 4-6

For Students 4th - 6th
In this math test practice worksheet, students complete a total of 10 problems using a variety of concepts. Page has links to answers and additional activities.
Lesson Plan
Curated OER

Gearing Up

For Teachers 6th - 8th
Students practice using ratios to solve real-world problems.
Lesson Plan
Illinois State Board of Education

Solar System

For Teachers 6th - 9th Standards
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...
Worksheet
Curated OER

Ratios

For Students 6th
For this ratios worksheet, 6th graders solve and complete 3 different types of problems. First, they divide each amount shown in the ratio of 2 to 3. Then, students explain why the amounts worked out to be whole numbers.
Lesson Plan
Curated OER

Build Your Dream Bedroom

For Teachers 7th Standards
Designers measure their own rooms and produce a scale drawing. They use the Internet to visit sites to find the costs of purchasing new carpet, paint, or anything else they would like to add to their room. Using a $1500 budget, they will...
Lesson Plan
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Beacon Learning Center

Bowling Over the Order of Operations

For Teachers 4th - 6th Standards
Upper graders will solve equations using order of operations, and create equations that to play a fun math bowling game. They will bowl using dice to practice operations. Extensions are also included.