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### We found 122 reviewed resources

Lesson Planet: Curated OER

#### Find the Area of a Circle

A great video for those curious learners who want to know where the area formula comes from. Use this third video in a series to see how the narrator takes a circle and rearranges it into a rectangular-shaped object to apply the...

Lesson Planet: Curated OER

#### Designs

A resource that makes for excellent group work as learners explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group members...

Lesson Planet: Curated OER

#### Stained Glass

A complex question looking for the total cost of a stained glass window by calculating area and circumference of a circle. With detailed components, this activity will challenge your designers to figure out if they have enough money to...

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#### Eight Circles

We are used to finding the area of a circle by plugging the radius into an equation. Here, learners are required to go further to find multiple areas and calculate the difference. They must detect a pattern in order to figure out the...

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#### Manufacturing: Gas Metal Arc Welding (GMAW) Shielding Gas Mix

Middle schoolers apply math to the real-world skill of choosing the correct shielding gas mixture for welding. Even if you do not have shielding gas cylinders on hand for demonstrating, the concepts of converting percentages into...

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#### Architecture and Construction: Stair Construction

Within the context of the construction industry, algebra pros begin to calculate slope from the sizes of stair steps. This is a terrific lesson, especially for aspiring engineers. Just be aware that it might be a stretch to meet all of...

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#### Hospitality and Tourism 1: Safety and Sanitation

Math and science come alive in this career-related lesson plan on sanitation. Along the way, learners explore bacterial growth rates using exponential notation and graphs. A link to a very brief, but vivid video shows just how quickly...

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#### PI in the SKY

What is pi anyway? After this set of activities, your pupils should have multiple answers to this question. Investigate pi with various experiments and discoveries. Calculate the ratio circumference/diameter for different sized circles....

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#### Number Sense: Real Numbers

Using a scientific calculator and an 11-page guide sheet, middle schoolers investigate real numbers and problem-solving properties. The publisher links this resource to Common Core standard for seventh grade math, but you may find it a...

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#### Developing Formulas for Circles and Regular Polygons

Formulas and procedures for finding the area and circumference are not provided on this handout, so it will be best used as a practice of already-acquired skills. It is a well-rounded assignment, however, as it includes diagrams,...

Lesson Planet: Curated OER

#### Parts of the Circle

Before you can do anything with circles, you need to know the parts of the circle. Viewers of a short video see how to label relevant information about a circle. The resource covers radius, diameter, circumference, chord, tangent, arc,...

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#### Area of a Circle

Circle back and use the resource to review area. Young pupils see how to find the area of a circle given its radius or diameter. The instructive video also shows an example of how to find the radius given the area.

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#### Pizza Doubler

Double the pizza? What a great deal! Young pizza enthusiasts investigate two different coupons, one that doubles the radius and one that doubles the sector angle of a slice. They determine which coupon is the better deal.

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#### The Ticket Roll

This is your ticket to understanding estimation. Scholars estimate the number of tickets on a ticket roll. To perform the task, they use pictures and given dimensions of a ticket roll and of a single ticket and apply concepts of area and...

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#### Circumference & Area Worksheet 3

You can't go wrong with this series of practice problems about circumference and area. The answer keys are provided, so you can use some or all of the problems without needing to worry about solving beforehand. Some problems have your...

Lesson Planet: Curated OER

#### Circumference & Area Worksheet 2

With plenty of problems to chose from, this series of worksheets provides you different types of area and circumference problems. Your learners can plug diameter and radius in to solve, or they can work backward when the area or...

Lesson Planet: Curated OER

#### Circumference & Area Worksheet 1

Don't stress about creating your own problems and use this series of circumference and area worksheets. The problems ask pupil to plug diameter and radius into the formula to solve for area or circumference. The problems also have...

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#### Health Science: Back to Basics

This lesson focuses on unit conversion, proportions, ratios, exponents, and the metric system. Discuss measurement with your math class and demonstrate how to solve several health-science word problems. Give learners a chance to visit an...

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#### Twinkies

Brian was devastated when Hostess® filed for bankruptcy, and he was also fearful that his favorite snack treat would be lost forever. The snack food was in danger of being lost, your class won't be lost when using Twinkies® as the...

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#### Circles all Around

Students investigate circles. In this middle school mathematics lesson, students explore the relationship between the diameter of a circle and its circumference.

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#### Circumference of a Circle

Save trees and practice calculating the circumference of circles with this online interactive task! Of course, if you want individuals to turn it in, you will still need to print copies. There are 20 problems to solve, all of which...

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#### A Tough Nut to Crack

Children, based on a set of criteria, evaluate the quality of pecans. They research recorded history of pecan trees as well as how their seeds moved across western Missouri into southeastern Kansas, Oklahoma, Texas and Mexico. In...

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#### Circles in the Landscape: Irrigating Oklahoma Crops

How do you grow crops in a area with insufficient rainfall? Why you irrigate, of course. Class members investigate irrigation systems by designing a system of their own. After examining irrigation related concepts, vocabulary terms, and...

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#### It's Around There Somewhere! Perimeter, and Circumference

Explore the concept of building equations for perimeter and circumference. Learners use rulers to measure the perimeter of half a sheet of paper. Then fold the sheet of paper numerous times, each time measuring perimeter. Learners use...