### We found 365 resources with the concept diameter

Videos (Over 2 Million Educational Videos Available)

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How Computers Work: What Makes a Computer,...

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Defining Gravity

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Thomas Jefferson - Author of The...

Other Resource Types ( 365 )

Lesson Planet

#### The Outer Planets: Grades 6-8

A long time ago, a galaxy formed that contained a solar system with eight planets—or nine depending on who is counting. A collection of 22 lessons has middle schoolers examine the Outer Planets of the solar system. They calculate the...

Lesson Planet

#### High School Balanced Packet 2 Assessment Tasks

Good assessments can be hard to find and difficult to formulate. Designed as a collection of mathematics assessment tasks, the 20 resources in this packet can also be used as lesson openers, a review, or extra practice. The open-ended...

Lesson Planet

#### Math Antics Geometry Video Lessons

The point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...

Lesson Planet

#### Fibers, Dyes, and the Environment

Nanofibers can be made through electrospinning or force spinning in order to reduce the negative impact on the environment. Pupils study the role of fibers and dye on the environment through a series of five hands-on activities. Then,...

Lesson Planet

#### What is DBH?

When measuring the circumference of a tree, does it matter how high you place the measuring tape? Most scholars have never considered this question, but scientists know that measurement techniques must be standardized. The 13th lesson in...

Lesson Planet

#### Circles

Don't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated worksheet provides guided practice through many topics such as central angles, inscribed polygons and...

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#### Eighteen Flavors

Your learners will be tantalized by this inquiry-based, collaborative activity as they discover how to write an equation that represents the height of an ice cream cone. Given the scenario based on the poem, "Eighteen Flavors," and...

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

#### Area of a Circle

A second installment in a series on circles, this production demonstrates the process of finding the area of a circle. As an introductory tool, it is effective. However, it does not explain the reasoning behind the formula because that...

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#### Circles: Radius, Diameter and Circumference

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#### SAT Prep: Test 1 Section 3 Part 4

Pushing through to problems 11-12 on page 398 of The Official SAT Study Guide, Sal goes into comprehensive detail on each problem. Problem 11 involves geometry, including the function of pi, and problem 12 involves non-constant slopes....

Lesson Planet

#### SAT Prep: Test 3 Section 2 Part 3

Math speeds along in this video, which takes students through problems 11-15 on the practice SAT. Sal takes care to show students more than one possible way to solve several problems, allowing them to make the choice based on their own...

Lesson Planet

#### SAT Prep: Test 4 Section 4 Part 1

The next section of the practice SAT from The Official SAT Study Guide (page 594) covers simple linear equations and geometric figures. Students will appreciate Sal's quick problem solving and thought process, which is easy to understand...

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#### SAT Prep: Test 3 Section 8 Part 2

Problems 7-9 involve exponents, inequalities, and geometric figures (diameter and radius), all of which Sal explores eagerly. After misreading one problem, he takes care to correct his mistake, showing students how important it is to...

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

#### 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 instructional activity, pupils understand how to find the radius,...

Lesson Planet

#### Discovering Pi/Welcome to Pi Day

Students explore pi. In this circle measurement lesson plan, students define and identify radius, diameter, circumference, and perimeter. Students work in groups to measure several plastic lids and record their findings. Students compare...

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#### Super Shapes Part 2 - Circles

Through the use of Internet, video, and hands-on activities, youngsters learn the parts and characteristics of a circle. This fantastic lesson has some excellent website activities included in the plan. Your kids will have a much greater...

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#### Circles in Geometry

Learners figure the diameter and circumference of a circle. In this circles lesson, students break into small groups and work together to find the answers then compare with peer groups. Learners then make human circles and using string...

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#### The Circle's Measure

Listen to the story "Sir Cumference and the Dragon of Pi" and solve the riddle and to save Sir Cumference from the knights. Your students will love mixing an activity with story and will practice their measuring skills while completing...

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#### Sports Bag

New ReviewLay it out using the least amount of material. Learners use the dimensions of a cylindrical sports bag to find out the size of pieces of material needed to sew them. The pupils find the best placement of the pieces to use the least...

Lesson Planet

#### Measure the Diameter of the Sun

Measuring the diameter of the sun may get a little heated, but using an indirect approach can help individuals keep their cool. Learners use the reflection of the sun to measure how long it takes for it to move one diameter. Using the...

Lesson Planet

#### Pi Day #1a – Discovering Pi

Unravel the mystery behind the infamous number pi. Scholars complete a series of activities that explores where pi comes from, its digits and estimation strategies. Pupils should be ready to measure, calculate, and look for patterns to...

Lesson Planet

#### Pi Day | All About the Holidays

Pi day is both delicious and informative! Play a short video on Pi Day to explain the basics behind both the holiday and the infinite number.