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440 resources with the concept circumference

10:17
Lesson Planet

Circumference, Volume of a Cone, Pythagorean Theorem (L1.5)

For Students 8th - 11th Standards
There's a formula for that. An educational video shows viewers how to apply geometry formulas to solve problems. It covers the formulas for the circumference of a circle, volume of a cone, and the Pythagorean Theorem.
Lesson Planet

Wedding Cake Ribbon

For Students 3rd - 8th Standards
Customers often want ribbon around fancy cakes, but how does a baker know how much ribbon to buy? Scholars view a cake with multiple layers in different geometric shapes. They must figure the perimeter and circumference and add them...
Lesson Planet

Penny Circle

For Teachers 7th - 12th Standards
Watch as your classes buy into a rich lesson full of information. A video opener challenges individuals to determine the number of pennies that fit in a circle with a 22-inch diameter. Using lesson materials, scholars collect data and...
Lesson Planet

Suitcase Circle

For Teachers 9th - 12th Standards
Analyze patterns in a circular arrangement. After using a geometric construction to complete a circle, learners use proportional reasoning to make predictions. By determining the length of an arc built from suitcases, they estimate the...
Lesson Planet

Rotonda West, FL

For Teachers 9th - 12th Standards
The shortest distance from point A to point B is a straight line—or is it? Young scholars determine the shortest route either along a circular path or through the center of the circle. Learners gain a unique perspective on arc length and...
Lesson Planet

Apple Mothership

For Teachers 9th - 12th Standards
Explore Apple's spaceship office building. Built in the shape of a circle, the office building offers a unique floor plan challenge. Young scholars use the dimensions of the building to estimate the square footage for each employee. 
Lesson Planet

Best Circle

For Teachers 9th - 12th Standards
Drawing the perfect circle is harder than one would think! What makes a circle a circle and how can you define that with a formula? Young mathematicians devise their own methods of analyzing the imperfections of circle drawings. Using...
3:14
Lesson Planet

Circumference: Lesson

For Students 6th - 10th Standards
It all depends what is given. The section of a large geometry playlist discusses the two formulas for finding the circumference of a circle. With the aid of the formulas, the presenter demonstrates finding the distance around circles in...
2:45
Lesson Planet

Measuring Arc Length: Lesson

For Students 7th - 11th Standards
Slice off a piece of pi! A section of an extensive playlist on geometry develops the formula to find the length of an arc. Using the formula, the presentation works through examples finding the arc length, the radius, and the measure of...
Lesson Planet

Discovering the Area Formula for Circles—Apple Pi

For Teachers 6th - 8th Standards
Need an activity that brings your class' understanding of the area formula full circle? The second installment in a two-part series involving geometric calculations further develops the young mathematician's measurement, approximation,...
3:58
Lesson Planet

Spool Riddle - Which Way Will It Roll?

For Students 9th - Higher Ed Standards
Looking for a challenging brain teaser to stimulate conversation? The spool riddle will make things roll right along! The narrator of the a physics video series explains the constraints of the spool in terms of movement and friction,...
3:14
Lesson Planet

Calculating Pi with Real Pies

For Students 9th - Higher Ed
Pie is great for finding pi. A short video shows how to use real pies to calculate pi. The method involves laying out pies along the circumference and along the diameter of a circle, and then finding the ratio of the number of pies.
Lesson Planet

Discovering the Formulas for Circumference and Area of a Circle

For Teachers 9th - 12th Standards
Find formulas using direct measurements and reconstruction. Groups use diagrams of circles and measure their circumferences. With several examples, classmates determine the constant of variation, pi. Pupils continue exploring circle...
Lesson Planet

Building Graduation Caps

For Teachers 8th - 12th Standards
Top off geometric calculations by building caps. Groups determine the sizes needed and build each member a mortar board graduation cap. Using the average size, the team calculates the total amount of material required to build a typical...
Lesson Planet

Lessons for Learning—Grade 7

For Teachers 7th Standards
Find tips and tricks to better understand the standards in a resource that contains several lessons to teach major concepts in the seventh grade standards. Lessons contain games involving the addition of integers; using algebraic...
1 In 1 Collection 7:56
Lesson Planet

Circles, Circumference and Area

For Students 4th - 8th Standards
Put pi to work. The video provides the formulas for the circumference and area of circles. Using the formulas, the presenter shows how to distinguish the two using units. The discussion leads to the second formula for finding the...
1 In 1 Collection 7:58
Lesson Planet

Circles, What Is Pi?

For Students 4th - 8th Standards
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...
11:21
Lesson Planet

Distances

For Students 6th - 12th
How can you determine the distance between two objects when one is incredibly far away? Discover how early astronomers and mathematicians calculated quantities such as the distance between Earth and the Sun in an insightful video. The...
Lesson Planet

Arc Length and Radians

For Students 9th - 12th Standards
Relate the constant of proportionality to radians. Pupils use the fact that all circles are similar to show that the arc length subtended by an angle is proportional to the radius. The scholars use the shown relationship to verify the...
Lesson Planet

Area and Circumference 3

For Students 9th - 12th Standards
Use the previous assumptions to derive the commonly known formulas. The resource provides the prior assumptions, and pupils use these assumed facts to derive the familiar formulas for the area and circumference of a circle. The scholars...
Lesson Planet

Area and Circumference 2

For Students 9th - 12th Standards
Use scale factors to find areas of circles. Pupils delve deeper into the informal argument for the formula of the area of a circle. The scholars show the relationships of areas of similar polygons also holds true for circles.
Lesson Planet

Area and Circumference 1

For Students 9th - 12th Standards
Have the class describe the relationship of the area and perimeter of inscribed polygons and the area and circumference of the circle. Pupils investigate the relationships of areas and perimeters of inscribed regular polygons and circles...
Lesson Planet

Arc Length

For Students 9th - 12th Standards
Determine a fractional distance around the circumference. The resource presents two questions involving arc length. The measures of the central angles are given in degrees. Pupils determine the arc length in terms of pi for one problem...
Lesson Planet

Going the Distance

For Teachers 6th Standards
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.