### We found 2,023 reviewed resources for diameter

Lesson Planet

#### Circumference and Diameter Relationship

With a ruler and a piece of string, geometers measure the circumference of a circular object. Tracing and folding it, they find the diameter of the resulting circle so that they can relate it to the circumference. It is recommended that...

Lesson Planet

#### Inscribed Angle on Diameter

What is the relationship between inscribed angles associated with the diameter? Given a triangle inscribed in a circle with the diameter as one side, pupils find the measure of two angles using a combination of the formula for the...

Lesson Planet

#### Measure the Solar Diameter

Scientists could measure the diameter of the sun before they knew its distance. Scholars construct a simple mirror box to measure the diameter for themselves. They compare this measurement with the official size, listed in a textbook,...

EngageNY

#### Circles, Chords, Diameters, and Their Relationships

A diameter is the longest chord possible, but that's not the only relationship between chords and diameters! Young geometry pupils construct perpendicular bisectors of chords to develop a conjecture about the relationships between chords...

Lesson Planet

#### Circumference and Areas of Circles

Middle and high schoolers listen to a scenario about a puppy and use the scenario to develop formulas in order to find the area of a circle. In this circumference lesson, pupils understand how to find the radius, diameter, area of a...

Lesson Planet

#### Diameter and Circumference of a Circle

Tenth graders explore circles. In this geometry lesson, 10th graders explore the relationship between a circle’s circumference and its diameter. The dynamic nature of the technology allows students to verify the circumference formula...

Lesson Planet

#### Transportation, Distribution, and Logistics: Tire and Wheel Assemblies

Is bigger really better? By the end of this lesson, learners will be able to apply formulas for computing the diameter of tires and wheel assemblies. Begin by showing a slide presentation that will review definitions for radius and...

Lesson Planet

#### Circles Notes: Diameter, Radius, Circumference, and Area

A note-taking sheet and homework are paired up in this resource. Through both, your class will learn the definitions for the diameter, radius, area, and circumference of a circle. The notes guide also displays the formulas for computing...

Lesson Planet

#### Bubble Mania

Elementary schoolers practice measuring a soap bubble print. They follow a recipe to make a soap bubble solution. Pupils use the soapy solution to blow large bubbles with a plastic drinking straw until they pop leaving behind a circular...

Lesson Planet

#### How Do You Find the Area of a Circle if You Know the Diameter?

Do you know the formula to find the area of a circle? Do you know the value of pi? Do you know what the relationship is between diameter and radius? Yes? Then you can solve this problem. If your scholars don't know this formula then this...

Lesson Planet

#### Circles: Radius, Diameter and Circumference

Fascinating discussion regarding the origin of Pi accompanies a detailed explanation of how to find the circumference of a circle. Since this is the first installment in a series on circles, the concept of circumference is separated into...

Lesson Planet

#### Test 2 Section 2 Part 5

Both algebra and geometry problems are featured in this SAT practice video. Students who have a hard time transitioning between skills on tests (average mean, then diameters and pi, then positive integers) would benefit from Sal's deft...

Lesson Planet

#### The Moons of Jupiter

Middle schoolers analyze given data on density and diameter of objects in space by graphing the data and then discussing their findings. This ninth installment of a 22-part series emphasizes the Galilean moons as compared to other objects.

EngageNY

#### The Most Famous Ratio of All

Pupils develop a definition of a circle based upon its radius in the 17th segment of a 28-part series. They determine the relationship between the radius and the diameter of a circle. To round out the instructional activity, they use the...

Lesson Planet

#### Neptune

Examine an innovative approach to a large-scale model. Pupils across the state of Maine teamed up to create a model of the solar system that spans 40 miles. Put thinking skills to work within your classes as they make the calculations to...

Lesson Planet

#### Circles: Radius, Diameter and Circumference

Lesson Planet

#### Circle Problems - Radius, Diameter, Circumference and Area

In this online math worksheet, students determine the radius, circumference, diameter and area of circles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...

Lesson Planet

#### Radius, Chord, Diameter, and Secant

What do a secant, chord, diameter, and radius all have in common? They are all components or measurements of a circle! This clip quickly defines each of these terms using verbal, written, and diagram examples.

Lesson Planet

#### Radius, Diameter and Circumference

In this circle worksheet, students use a drawing of a circle. The diameter is given. Students find the radius, circumference and area of the circle. On the second problem, students are shown a circle with a hole inside it. They compute...

Lesson Planet

#### Circles, What Is Pi?

Understanding the basic of circles is as easy as pi. The resource introduces the definition of a circle along with its dimensions, circumference, diameter, and radius. Using graphics, the video shows the approximation of pi and how to...

Lesson Planet

#### The Circumference and Diameter of a Circle

Ninth graders investigate the finding of the diameter of a circle in order to extend the practice towards finding the circumference. They differentiate between the distance measured across a circle from that of around the perimeter.

Lesson Planet

#### Circles: Radius, Diameter, Area, and Circumference

In this circles worksheet, students answer 12 questions about circles. Students find the radius, diameter, circumference, and area of three circles given a diagram.

Lesson Planet

#### Circles, Circles, Everywhere!

Students explore the concept of circles. In this circles lesson, students use their Ti-Nspire to collect data on various circles of different sizes. Students measure the diameter and circumference of the circles and plot the data in a...

Lesson Planet

#### 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...