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### We found 364 resources with the concept diameter

Lesson Planet

#### Going the Distance

Estimate the value of one of the most famous irrational numbers. The hands-on lesson instructs classmates to measure the circumference and diameters of circles using yarn. The ratio of these quantities defines pi.

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,...

Lesson Planet

#### Circular Reasoning

Examine the origin and application of pi in five different levels. The five lessons in the resource begin with an analysis of the relationship between the radius and circumference of a circle. The following lessons lead learners through...

EngageNY

#### End-of-Module Assessment Task: Grade 7 Mathematics Module 3

Pupils work seven problems that use equations and expressions to solve geometry problems. The questions range from finding equivalent expressions to finding areas and volumes of figures. Learners use their knowledge of angle...

EngageNY

#### The Area of a Circle

Introduce learners to two methods to estimate the formula for the area of a circle. The first method uses sector of a circle to form a rectangle and the other uses grids to estimate the area. The problems in the 18th segment of a 28-part...

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

#### Area and Circumference of Circles

Don't go around and around, help your class determine amounts around and in a circle with a video that connects circumference to the perimeter or the distance around an object. The resource includes 14 questions dealing with circles and...

Lesson Planet

#### Circle Theorems

Explore theorems involving circles. Individuals watch a video that reviews the basic parts of a circle. They learn about circle theorems and compete a worksheet of problems that use these theorems — putting their skills to work right away!

Lesson Planet

#### Worksheet for Pi

Who needs a pie-eating contest when you have a pi-ology game! Celebrate March 14th with a fun board game about pi and other geometric concepts. As learners answer questions about geometry, they move around the board to collect tokens.

Lesson Planet

#### Bumpy-Ness

Develop a new measure of the properties of an object. Scholars develop a definition and formula to measure the bumpy-ness of an object. They utilize their formulas to find the property for several spherical objects.

Lesson Planet

#### The Moons of Jupiter

Can you name the three planets with rings in our solar system? Everyone knows Saturn, many know Uranus, but most people are surprised to learn that Jupiter also has a ring. The third in a series of six teaches pupils what is around...

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.

Lesson Planet

#### Fermi Length

How long does it take to get to the end of a toilet paper roll? Pupils use their estimation strategies to find lengths of common items. For example, knowing the area of a roll of toilet paper, scholars determine the length of the full roll.

Lesson Planet

#### Marbles in a Glass

Allow learners to design their own strategies to solve a problem. Given dimensions of a glass and a smaller marble, scholars must find the dimensions of a larger marble. The answer key suggests using the Pythagorean Theorem, but multiple...

Lesson Planet

#### Circumference of a Circle

Apple, cherry, pecan, or circumference: so many different uses for pi! Delve into the calculations relating to the circumference of a circle. The instructor applies the circumference formula to three different types of problems.

Lesson Planet

#### Inscribing and Circumscribing Right Triangles

High schoolers attempt an assessment task requiring them to find the radii of inscribed and circumscribed circles of a right triangle with given dimensions. They then evaluate provided sample responses to consider how to improve their...

EngageNY

#### Geometry Module 5: End-of-Module Assessment

The lessons are complete. Learners take an end-of-module assessment in the last installment of a 23-part module. Questions contain multiple parts, each assessing different aspects of the module.

EngageNY

#### Geometry Module 5: Mid-Module Assessment

How can you formally assess understanding of circle concepts? Pupils take a mid-module assessment containing five questions, each with multiple parts.

EngageNY

#### Arcs and Chords

You've investigated relationships between chords, radii, and diameters—now it's time for arcs. Learners investigate relationships between arcs and chords. Learners then prove that congruent chords have congruent arcs, congruent arcs have...

EngageNY

#### Rectangles Inscribed in Circles

Putting a rectangular object into a circular one—didn't the astronauts on Apollo 13 have to do something like this? Learners first construct the center of a circle using perpendiculars. They then discover how to inscribe a rectangle in a...

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...

EngageNY

#### Thales’ Theorem

Isn't paper pushing supposed to be boring? Learners attempt a paper-pushing puzzle to develop ideas about angles inscribed on a diameter of a circle. Learners then formalize Thales' theorem and use geometric properties to develop a proof...

Lesson Planet

#### Unit 7 Math Vocabulary Cards (Grade 6)

Thirty-eight flashcards make up a set designed to reinforce math vocabulary. Two types of cards can be found here; a word card in bold lettering, and a corresponding definition card that offers a labeled example. Terms include area,...

Lesson Planet

#### Unit 5 Math Vocabulary Cards (Grade 6)

Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a definition card...