### We found 440 resources with the concept circumference

Videos (Over 2 Million Educational Videos Available)

5:10

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

5:34

Women's History Activator: Eleanor Roosevelt

5:25

Language and Creativity

Other Resource Types ( 440 )

Lesson Planet

#### STEM on Station

The STEM on Station series offers students the next best thing to being astronauts on the International Space State. The 18 NASA videos in this collection bring viewers into the space station to observe how these teacher scientists live,...

Lesson Planet

#### Utah Middle School Math Project: 7th Grade

The eight resources in this collection provide tweens with the tools and protocols for solving problems which in turn enable them to make the transition from acquiring basic knowledge to creatively applying it. The lessons in the...

Lesson Planet

#### Mathematics Assessment Project: Tests for Middle School

Good assessments are hard to find—assessments that address content standards and fit into standard class periods. The six assessments in the middle school collection are 80-minute forms, divided into two 40-minute sections, and are...

Lesson Planet

#### Mission to Mars

Martians beware! Earthlings are on the way! A 13-resource collection prepares future astronauts for space travel by studying interesting facts about the Red Planet, the history of Martian exploration, and the development of robotics....

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...

EngageNY

#### EngageNY Geometry Module 2: Similarity, Proof, and Trigonometry

The Geometry Module 2: Similarity, Proof, and Trigonometry collection includes 36 lessons that are divided into five topics: Scale Drawings, Dilations, Similarity and Dilations, Applying Similarity to Right Triangles, and Trigonometry....

Lesson Planet

#### Grade 7, Claim 1: Concepts and Procedures Item Slide Shows

Prepare seventh graders for end-of-year assessments with a collection of nine resources packed with teacher and student-friendly slides featuring problems that address the A-I competencies. Questions are modeled after Smarter Balanced...

Lesson Planet

#### Know and Use the Formulas for Area and Circumference of a Circle (7.G.B.4)

Practice with the formulas for circumference and area of a circle. Videos each work with a specific area and the last video challenges them to work backwards when given the area.

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

#### Math Stars: a Problem-Solving Newsletter Grade 7

Put on your thinking caps because middle school math has never been more interesting in this huge resource full of thought provoking questions. Written as a newsletter, the resource has 10 two-page newsletters with a variety of...

Lesson Planet

#### Saxon Math Course 2

Add some variety to your school or district's math curriculum with this comprehensive collection of materials. Offering over 900 pages of Saxon Math lessons, worksheets, and activities, this resource is a gold mine for any middle school...

Lesson Planet

#### 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 6 Section 7 Part 5

On the home stretch of this practice session, Sal completes problems 18 and 19 on page 738 of The Official SAT Study Guide. He begins problem 20, but chooses to finish it in the next video instead of rushing the answer. As always, Sal's...

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

#### SAT Prep: Test 7 Section 5 Part 4

Transitioning between algebra and geometry is no problem for Sal as he deftly solves these practice SAT problems. Mathematicians who have a hard time moving between skill sets will appreciate the way that Sal addresses each new problem...

Lesson Planet

#### SAT Prep: Test 8 Section 2 Part 1

Test eight from The Official SAT Study Guide includes eighteen problems, the first four of which are featured in this video. Basic algebraic expressions, linear equations, tangent circles, and coordinates on a plane test algebra and...

Lesson Planet

#### CK-12 Middle School Math Concepts - Grade 6

Twelve chapters cover a multitude of math concepts found in the Common Core standards for sixth grade. Each title provides a brief explanation of what you will find inside the chapter—concepts from which you can click on and learn more...

Lesson Planet

#### How do I Prepare this Piece of Floor Tile to Lay on the Bottom of my Kitchen Sink Cabinet?

How can you place a rectangular tile around a pipe? Scholars first use a model of a kitchen sink cabinet to take measurements. Using a compass and their knowledge of circles, they then cut out a circle from a piece of poster board (which...

Lesson Planet

#### Catch Me If You Can!

Crime doesn't pay, but everyone can learn from it. Learners consider different situations involving mischief at a school, such as stink bombs and rockets, and analyze them using mathematics. They must apply trigonometry, quadratic...

Lesson Planet

#### Designing Euclid’s Playground

Create a geometric playground. Pupils work through a performance task to demonstrate their ability to use geometric concepts to solve everyday problems. The accompanying engineering design lessons show teachers how the assessment works...

Lesson Planet

#### STEMonstrations: Orbits

Learn about the orbit of the International Space Station directly from an astronaut on the International Space Station! Young scholars hear about the shape and path of orbits from a NASA astronaut in the video lesson from a larger...

Lesson Planet

#### Accessible Shapes

All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....

Lesson Planet

#### Smarter Balanced Sample Items: 7th Grade Math – Target F

Sometimes it's how you ask the question that counts. The sixth installment of nine from the Smarter Balanced Claim 1 Slideshow series presents a set of 13 questions to assess understanding of angle relationships as well as area and...

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

#### Functional Maths Questions

Dang, it's a word problem! Pupils address a variety of word problems that involve knowledge of proportions and geometric topics. The General Certificate of Secondary Education review problems require determining costs based on area...

Lesson Planet

#### Circumference

Circumference and diameter differ by just a factor of pi. A short video shows viewers how to calculate circumference given the diameter. It also gives an example of determining the diameter given the circumference.

Lesson Planet

#### Formulas for Circle Area and Circumference: Simple as Pie

Calculating circumference is as easy as pi times diameter. A short video explains how to measure pie tins using the diameter. It also describes the relationship between diameter and circumference. Using the knowledge, scholars consider...

Lesson Planet

#### Scale City — Scaling up Recipes and Circles in the Real World

What a great big skillet you have. The resource introduces the class to the world's largest stainless steel skillet. The class creates a model of the skillet and a typical 12-inch skillet and compares the relative sizes of their areas....

Lesson Planet

#### Perimeter of a Semi-Circle

Surround yourself with knowledge about perimeter. An informative video shows viewers how to find the perimeter of a semicircle. It begins with an explanation of calculating the length of the semicircular arc and ends with adding on the...

Lesson Planet

#### Module 5: Circles A Geometric Perspective

Circles, circles, everywhere! Pupils learn all about circles, central angles, inscribed angles, circle theorems, arc length, area of sectors, and radian measure using a set of 12 lessons. They then discover volume formulas through...

Lesson Planet

#### Angles at the Centre and Circumference – Proof

Scholars ponder the proof relating the center angle and circumference using a demonstrative video. Additional worksheets and textbook practice helps them demonstrate their intellect.

Lesson Planet

#### Spinning an Old Record

Take a trip back in time to examine angular velocity. Using the revolutions per minute, learners calculate the speed of a point on a 33 record. They compare the speed of a point on the edge of the record to the speed of a point closer to...

Lesson Planet

#### Bicycle Chain

Model a bicycle chain with circles and tangent lines. Given the dimensions of the sprocket wheels, young scholars calculate the length of the chain that surrounds them. A second task has learners write a function for the length of a...

Lesson Planet

#### Arranging Tables for a Birthday

Planning a party of 45 guests may be more complicated than it would seem. Learners must design the space in accordance with these constraints about the space available in the room. They need to calculate area, circumference, and linear...

Lesson Planet

#### Pokémon Go Cheat

Gotta catch them all—no learner left behind! Young scholars must predict the length of time it takes a phone attached to a fan to travel five kilometers given the radius and rotations versus time data. Why would you attach a phone to a...

Lesson Planet

#### Brita

It's hard to envision what 39 billion plastic bottles look like. Brita claims that the US uses that number of plastic bottles each year! If that's not enough to get your attention, figure out how many times 39 billion water bottles can...

Lesson Planet

#### Car Caravan

Keep playing with those old toy cars! Pupils estimate the number of toy cars in an art installation. The only information they receive is a picture showing the toy cars arranged in concentric rings and the diameter of the overall...

Lesson Planet

#### Tether Ball

All work and no play makes for a boring classroom! Bring back memories by analyzing the patterns of a tether ball. Given the dimensions of the ball, pole, and rope, young scholars must determine how many times the ball will wrap around...

Lesson Planet

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

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

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

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

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

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

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

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...

Lesson Planet

#### Circumference: Lesson

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...

Lesson Planet

#### Measuring Arc Length: Lesson

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

#### Spool Riddle - Which Way Will It Roll?

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,...

Lesson Planet

#### Discovering the Formulas for Circumference and Area of a Circle

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

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

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...

Lesson Planet

#### Circles, Circumference and Area

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...

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

#### Distances

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

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

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

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

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

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

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

#### Discovering Relationships Between Side Length and Area

Consider the relationship between side length and area as an input-output function. Scholars create input-output tables for the area of squares to determine an equation in the first installment of a three-part unit. Ditto for the area of...

EngageNY

#### More Problems on Area and Circumference

Perimeter check! Pairs work on finding the areas of semicircles and quarter circles using a relationship with squares. The problems challenge pupils to find areas of composite figures made from rectangles, semicircles, and quarter circles.

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...

Lesson Planet

#### Arc Length and Area of a Sector

What do skateboarding and baked goods have in common with math? You can use them to connect half-pipe ramps and cakes to arcs and sectors. Pupils compare the lengths of three different ramp options of a skate park. They calculate the...

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 lesson, they use the formula for 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

#### Square and Circle

To determine the dimensional change to quadruple the area, class members determine how to increase the dimensions of a square and a circle to increase the perimeter by a given factor. they then calculate the necessary factor to create...

Lesson Planet

#### Alien Invasion

Win the war of the worlds! Scholars solve a variety of problems related to an alien invasion. They determine where spaceships have landed on a coordinate map, devise a plan to avoid the aliens, observe the aliens, and break a code to...

Lesson Planet

#### Rugs

The class braids irrational numbers, Pythagoras, and perimeter together. The mini-assessment requires scholars to use irrational numbers and the Pythagorean Theorem to find perimeters of rugs. The rugs are rectangular, triangular,...

Lesson Planet

#### Which is Bigger?

To take the longest path, go around—or was that go over? Class members measure scale drawings of a cylindrical vase to find the height and diameter. They calculate the actual height and circumference and determine which is larger.

Lesson Planet

#### Pizza Crusts

Enough stuffed crust to go around. Pupils calculate the area and perimeter of a variety of pizza shapes, including rectangular and circular. Individuals design rectangular pizzas with a given area to maximize the amount of crust and do...

Lesson Planet

#### Star from Square

Quilting is not only beautiful and unique—it is a mathematical art. Show your classes how to design a quilting block while practicing area and circumference of circles. Scholars create a star from a square and then find the circumference...

Lesson Planet

#### Arc Length

Don't let your classes feel like they are going in circles. The video lesson shows pupils how to apply a formula to finding the length of an arc defined along a circle. The instructor uses three different examples to illustrate the...

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

#### Calculating Arcs and Areas of Sectors of Circles

Going around in circles trying to find a resource on sectors of circles? Here is an activity where pupils first complete an assessment task to determine the areas and perimeters of sectors of circles. They then participate in an activity...

Lesson Planet

#### Designing a 3d Product in 2d: a Sports Bag

Sew up pupil interest with an engaging, hands-on lesson. Learners first design a sports bag given constraints on the dimensions of fabric. They then evaluate provided sample responses to identify strengths and weaknesses of included...

Lesson Planet

#### Historic Bicycle

"Ordinary" bicycles are not so ordinary. Learners use given information to determine the circumference of wheels for a historic Ordinary or Penny Farthing bicycle. Pupils then determine the number of times each wheel turns when the...

Lesson Planet

#### The Great Gravity Escape

Groups simulate an orbit using a piece of string and a water balloon. Individuals spin in a circular path and calculate the balloon's velocity when the clothes pin can no longer hold onto the balloon.

Lesson Planet

#### Geometric Figures and Scale Drawings

Scale up your lessons on geometry and ask learners to investigate conditions on triangles, scale drawings, area and circumference of circles, and angle relationships. The resource includes activities and a homework assignment.

Lesson Planet

#### Perimeter of Common Geometric Figures

Help learners understand that perimeter and circumference are one in the same. Learners apply their skills to determine the perimeter/circumference of triangles, rectangles, and circles. They then use the same strategy to find the...

Lesson Planet

#### Middle School Mathematics Test 4

Raise expectations in your classroom and assess learners through the provided performance tasks. Class members must apply concepts learned throughout the year, providing a good measurement of how well they understand the material. The...

Lesson Planet

#### Formulas for Elementary and Intermediate Algebra

Give your scholars the support they need to work with formulas. A reference page offers definitions and picture examples of perimeter, area, surface area, volume, the Pythagorean theorem, a variety of shapes, and more.

Lesson Planet

#### It All Comes Full Circle

How long does it take spacecraft go around the earth? Using the circular orbits of the space shuttle and the International Space Station, groups determine the distance traveled in one revolution, then calculate the distance traveled...

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

#### Assessment For The California Mathematics Standards Grade 6

Test your scholars' knowledge of a multitude of concepts with an assessment aligned to the California math standards. Using the exam, class members show what they know about the four operations, positive and negative numbers, statistics...

Lesson Planet

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

Acute angles, nets, and vertices are only a few terms that a set of flash cards includes. Among the 108 cards, two types are available; word cards printed in bold-faced lettering, and corresponding definition cards equipped with an...

Lesson Planet

#### Sphere Dressing

Geometric design makes a fashion statement! Challenge learners to design a hat to fit a Styrofoam model. Specifications are clear and pupils use concepts related to three-dimensional objects including volume of irregular shapes and...

EngageNY

#### Families of Parallel Lines and the Circumference of the Earth

How do you fit a tape measure around the Earth? No need if you know a little geometry! Pupils begin by extending their understanding of the Side Splitter Theorem to a transversal cut by parallel lines. Once they identify the proportional...

Lesson Planet

#### Discovery of Pi

Serve up a slice of math for Pi Day! A combination of fun, hands-on lessons and helpful worksheets encourage learners to practice finding the radius, diameter, and circumference of different circles.

Lesson Planet

#### Pi Day

Did you know a mathematician's favorite dessert is a fruit "pi"? By participating in a fruit cutting activity, young mathematicians realize one constant—the ratio of a circle's circumference to its diameter is always pi. It is a perfect...

Lesson Planet

#### Running Around a Track II

On your mark, get set, GO! The class sprints toward the conclusions in a race analysis activity. The staggered start of the 400-m foot race is taken apart in detail, and then learners step back and develop some overall race strategy and...

Lesson Planet

#### Running Around a Track I

The accuracy required by the design and measurement of an Olympic running track will surprise track stars and couch potatoes alike. Given a short introduction, the class then scaffolds into a detailed analysis of the exact nature of the...

Lesson Planet

#### Eratosthenes and the Circumference of the Earth

The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...

Lesson Planet

#### 7th Grade Math "I Can" Statement Posters

Translate the Common Core math standards into a series of achievable "I can" statements with this collection of classroom displays. Offering posters for each standard, this resource is a great way to support your seventh graders as they...

Lesson Planet

#### 7th Grade Math Common Core Checklist

With so many math standards to fit into a school year, it can be difficult keeping track of what you have and have not covered. This collection of Common Core checklists allows you to maintain a running record of when each standard was...

Lesson Planet

#### Anatomy of a Circle

Make sure your learners are well-versed in circles with a reading passage. Pupils will pick up some important circle-related terms as they read and respond to the five included questions.

Lesson Planet

#### Let Them Eat Pi

Looking for a fun and creative way to celebrate Pi Day? Then this is the resource for you. From a scavenger hunt and trivia contest to PowerPoint presentations and skills practice worksheets, this collection of materials is a...

Lesson Planet

#### The Amazing Pi Race

Add a sense of excitement to your math class with this race across the country. Using their knowledge of all things circular, young mathematicians work in pairs answering a series of pi-related word problems as they hop from one city to...

Lesson Planet

#### Circles: A Geometric Perspective

Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...

Lesson Planet

#### Pi Day Fun!

In this multi-faceted introduction to pi, participants perform a bevy of pi-related activities. Ranging from measuring household items to singing pi songs and reading pi stories, this fun and non-intimidating resource serves to bring up...

Lesson Planet

#### National π Day

Learners can enjoy pi with pie! A collection of short activities celebrates pi day with a word search, a maze, and real-world problemsn. Using pi in formulas for area, circumference, and volume as well as exploring simple fractions is...

Lesson Planet

#### Practice: Word Problems

Congratulations, you've just hit the word problem jackpot! Covering an incredible range of topics from integers and fractions, to percents, geometry, and much more, this collection of worksheets will keep young mathematicians busy...

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

#### Penn Museum: China Gallery

Invite your learners to take a closer look at the art and mathematical function of dome buildings as designed by the ancient Romans. In the next segment of this attractive worksheet set, your young historians will then learn about...

Lesson Planet

#### Maya Ball

Sure the ancient Mayan civilization had an advanced calendar and mathematical system, but did you know that they also played a great team sport like basketball? Invite your learners to discover the great ballcourt at Chichen Itza and...

Lesson Planet

#### The Circumference of a Circle and the Area of the Region it Encloses

Bring your math class around with this task. Learners simply identify parts of a given circle, compute its radius, and estimate the circumference and area. It is a strong scaffolding exercise in preparation for applying the formulas for...

Lesson Planet

#### Find the Circumference of a Circle

Solving for circumference is an easy as one, two, pi! Show your learners what pi is and how to use it in an equation. This second video in a series uses the circumference and the radius as a ratio to show that 3.14 is a constant in these...

Lesson Planet

#### 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...

Lesson Planet

#### Similar Triangles and Trapezoids, and Circles

High schoolers answer two problems involving area of shaded regions. High schoolers then answers six questions involving perimeter, area, and circumferences. The remaining two questions involve ratios of similar figures.

Lesson Planet

#### Circles: Geometry Review Worksheet

Tenth graders solve and complete 14 different geometry problems. First, they find the area and circumference of a circle with a given radius. Then, they find the area between a circle and an inscribed equilateral triangle given the...

Lesson Planet

#### Are You Full of Hot Air?

Explore the concept of measuring and recording circumference. In this physical science and measurement lesson, young learners blow up balloons, measure the circumference, and record the data on an interactive graphing website.

Lesson Planet

#### Area and Perimeter

Students investigate area and perimeter of various shapes. In this area and perimeter of various shapes lesson, students record how area of shapes change when a dimension is doubled, halved, quartered, etc. Students make scatter plots...

Lesson Planet

#### Discovering the Area Formula for Circles—Apple Pi

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,...

Lesson Planet

#### 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...

Lesson Planet

#### Tree Size

Is there such a thing as too accurate? Individuals determine whether a calculated diameter is reasonable based on the given circumference and value of pi. They must consider the degree of accuracy of the calculation.

Lesson Planet

#### Geometry: Extended Performance Task Plan for Backyard Oasis

Backyards are made for relaxing ... not doing math! Young mathematicians design a backyard based on a list of client specifications. They calculate areas, write equations for the path of a fountain, and research costs for a garden.

Lesson Planet

#### 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

#### 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

#### 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...

Lesson Planet

#### Exploring Circles

Students explore circles using a graphing calculator. In this circles lesson, students write the equation of a circle with a given center and radius length. Students find the most appropriate model for each combination of data they...

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

#### A Slice of Pi

Math pupils, by viewing a video, discover the history of pi and some of the applications of its uses in the world today. They conduct an experiment by measuring the diameter and circumference of various circular objects to calculate...

Lesson Planet

#### Small Angle Calculations

Students work with circles, angles and estimating angles in the night sky. In this circles and angles instructional activity, students practice measuring a degree using the circumference of a circle and apply the degree to determine a...

Lesson Planet

#### Worksheet #4: Simplify Algebraic Expressions With Two Variables

In this algebraic expression worksheet, students simplify algebraic expressions and solve proportions, and write equations from story problems. Thirteen of the 49 problems are fill in the blank, and the remainder are multiple choice.

Lesson Planet

#### Area of Circles and Probability

Students investigate the area of squares and circles. In this geometry lesson, students calculate the area and probability of simple events. They work on a laptop using Safari.

Lesson Planet

#### SAT Prep: Test 7 Section 5 Part 2

Complicated word problems and expressions are no match for Sal, and after watching this series, they will be no match for your students either! Sal deftly handles problems involving algebraic equations, averages, and circumference.

Lesson Planet

#### One Revolution for Robot

Students calculate the revolution and circumference of circles. In this calculus lesson, students derive the formulas for their given shape. They use the d=rt to calculate the distance and rate of travel.

Lesson Planet

#### Sir Cumference and the First Round Table

In this circumference worksheet, students solve and complete 5 different figures illustrated on the sheet. First, they cut out each shape found on the bottom. Then, students use the shapes on the left as clues to create the corresponding...

Lesson Planet

#### Let's Gather Around the Circle

Scholars explore the relationship between circumference and diameter. Groups of learners measure the diameter and circumference of round objects and record their data on a given worksheet. They then input the data into their graphing...

Lesson Planet

#### To the Moon

Pupils explore circumference manipulating Moon Pie wrapper. In this geometry lesson, they manipulate snack wrappers to find circumference, diameter, radius and distance.

Lesson Planet

#### 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.

Lesson Planet

#### Exploring the Circumcenter of a Triangle

Students construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle. Students...

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

#### Properties of the Centers of a Triangle

High schoolers investigate properties of the four centers of a triangle and explore a special property of the circumcenter and orthocenter of a triangle. This lesson requires the use of Cabri, Jr.

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...

Lesson Planet

#### Circles

In this circles instructional activity, 10th graders solve and complete 20 different problems related to various circles. First, they find the radius and diameter of a circle with a given circumference. Then, students determine the...

Lesson Planet

#### Standardized Geometry Test Practice

In this angles, lines and figures review instructional activity, 10th graders solve and complete 33 standardized multiple choice problems. First, they use the Segment Addition Postulate to solve for a variable given an equation for each...

Lesson Planet

#### Circles Review

In this circle worksheet, 10th graders solve and complete 25 various types of problems that include measuring various circles. First, they determine the measure of a diameter in a given circle. Then, students determine the length of the...

Lesson Planet

#### Circles

Your class examines a series of shapes and discusses how we know that they are not circles. In this way, you begin to acquaint them with the properties and parts of this geometric figure. Then, teach them how to use a protractor to...

Lesson Planet

#### Grade 6: Exploring c/d = pi

Introduce your math class to the perimeter of a circle. Teach them that pi describes the relationship between the circumference and the diameter. As a hands-on investigation, pairs or small groups use string to compare these two values...

Lesson Planet

#### Discovering Pi/Welcome to Pi Day

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

Lesson Planet

#### Example: Picking a non-blue marble

Typical probability problems are the focus of this video: the bag of colored marbles, a list of numbers, geometric circumference. Viewers will see the common questions with new eyes after viewing Sal's probability series. Sal's expertise...

Lesson Planet

#### Geometry: Area, Scale Factor, Circumference

In this geometry worksheet, students solve 10 problems regarding area, scale factors, and circumference. Students, in 3 of the problems, are given the circumference and asked to work backwards to find missing information.

Lesson Planet

#### Pizza Crusts

Help Robbie figure out what pizza shape he should choose to get the greatest amount of stuffed crust. This two-page learning exercise gives your young mathematicians a chance to find areas and perimeters of rectangular and circular...

Lesson Planet

#### Area of Parallelograms and Triangles

Using an Excel spreadsheet, young mathematicians calculate the area of triangles and parallelograms. This is a creative way to have them practice this concept. Not only do they learn how to use Excel, they also practice calculating the...

Lesson Planet

#### Circles in Geometry

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

Lesson Planet

#### 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...

Lesson Planet

#### Circumference

The difference between circumference and radius is the focus of this geometry lesson. After entering data into a spreadsheet which has the formula for circumference of a circle built into it, pairs of learners perform a hands-on exercise...

Lesson Planet

#### MTEL Math Practice Test: 31-35

Applying algebra and geometry skills, a set of problems tests the viewer with questions about area, radius, and proportions. An excellent review for even the most confident future math teacher, the video is sure to help with the correct...

Lesson Planet

#### What is a Cylinder?

Follow along as the instructor explains what makes a solid shape a cylinder. Yes, learning the meaning of these terms: cylinder, base, curved side, curved face, congruent bases, solid, three dimensional, area, circumference, parallel,...

Lesson Planet

#### Coordinate Grid: Area and Circumference of Circles

Here is a geometry worksheet in which learners plot the points of a circle onto a coordinate grid and proceed to calculate the area or circumference of the circle. There are four questions.

Lesson Planet

#### Circumference and Area: Madley Brath #58

Middle schoolers examine a donut-shaped ring. They compute the circumference of the entire ring and of the hole in the ring. They determine the area of the ring without the hole. This one-page worksheet contains a diagram with three...

Lesson Planet

#### Evaluating Formulas: Area and Circumference of Circles

Use this area and circumference of circles worksheet to have learners solve 13 short answer problems. They find the area and circumference of circles given a radius or diameter measurement.

Lesson Planet

#### Round and Round--Wheels and Axles

In this wheels and axles worksheet, students read a 1 page article, make a list of how many objects they can find or think if that uses a wheel or axle and then design their own machine.

Lesson Planet

#### 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...

Lesson Planet

#### Circles Minilab

Students learn how to measure the diameter and circumference of a circle. In this circle lesson, students organize their data to create a graph. Students utilize their graph to make an inference about the slope of pi.

Lesson Planet

#### Circles

In this circles instructional activity, 10th graders solve and complete 5 different problems related to measuring circles. First, they find the length of a given line when it is tangent to the circle with a given radius. Then, students...

Lesson Planet

#### Expressions and Operations

In this expressions and operations activity, students solve and complete 5 different problems that include reading and solving each individual question. First, they determine the value of each equation given the variables. Then, students...

Lesson Planet

#### Length of an Arc

Students compute the length of an arc and each hypotenuse in the give figure, adding them up in the end. They then develop the formula for the arc length with respect to the x-axis and the y-axis. Students also develop a formula for the...

Lesson Planet

#### Finding PI

Students select and use appropriate operations, methods and tools to compute or estimate using whole numbers. They develop and use formulas for determining the circumference and area of circles. Students determine and describe the...

Lesson Planet

#### Up, Up, and Away

Students create graphs from a spreadsheet, discover linear relationships, and explain the real world meaning of slope. They measure circumference and flight time for deflating balloons. Students create a spreadsheet of the data and...

Lesson Planet

#### Areas of Polygons, Arc Length, and Area Sectors

Math scholars explore the concept of area. In this area instructional activity, learners find the area of cardboard squares and circles that they have created. They use their cardboard constructions to find midpoint, area of sectors, arc...

Lesson Planet

#### Finding Circumference and Area of a Circle

Young geometers explore the concept of circumference and area of circles. They discuss what information is needed to find circumference and area. The resource employs several instructional methods: Frayer Model for Vocabulary, literature...

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.

Lesson Planet

#### Calculating Pi with Real Pies

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

#### 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

#### Rolling Coins

What caused the extra rotation? Class members visualize a coin rolling around the circumference of another coin. They determine the reason the rolling coin rotates twice. Further questions require them to determine a generalized formula...

Lesson Planet

#### Royal Liver Clock

Using clocks as dining tables? Scholars estimate the number of people that can sit around the face of the clock on the Royal Liver Building in Liverpool. They use estimation to justify their responses.

Lesson Planet

#### Review Words From Math

Review terminology with a math journal entry and short answer activity. Learners read the entry and use the information provided to answer six questions about vocabulary such as diagonal, protractor, and perimeter.

Lesson Planet

#### Circumference of Circles

In this comprehensive video Duane demonstrates how to use a formula to determine the circumference of a circle. This clip is good because it shows how to determine circumference when the diameter is knows and when only the radius is known.

Lesson Planet

#### How Do You Find the Radius of a Circle if You Know the Circumference?

So you know the circumference of a circle but not the radius. This tutorial shows you two different formulas commonly associated with circles, determines which formula to use, then puts the formula to work. You'll have no problem...

Lesson Planet

#### What is a Cylinder?

Lesson Planet

#### What is a Sphere?

The teacher diagrams and explains the different terms of what comprises a sphere. Follow along and learn about the: radius, diameter, great circle, center, and hemisphere.

Lesson Planet

#### What is a Sphere?

The teacher diagrams and explains the different terms of what comprises a sphere. Follow along and learn about the: radius, diameter, great circle, center, hemisphere

Lesson Planet

#### How Big is Barbie?

Students measure various dimensions of a male and a female dolls body and scale them proportionally to average human measurements. They calculate the appropriate scale factor (magnitude) to enlarge their doll and apply that scale factor...

Lesson Planet

#### As Easy As Pi!

Learners conduct a scavenger hunt to find circular objects at home, then use the objects to find the pattern of pi.

Lesson Planet

#### A World Of Money

Students read newspapers to find out how cultures have used money throughout time, graph information about money, determine the circumference of a circle, and do activities from web-sites about money.

Lesson Planet

#### MCC - 1106 Word Search

Use this geometry worksheet to have learners locate and identify various vocabulary terms related to mathematics. There are seven words/phrases located in the puzzle.

Lesson Planet

#### Lesson 11.5 Practice B - Circles

In this circles worksheet, 10th graders solve and complete 13 different problems that include determining the measurement of various angles within a circle. First, they determine the area of each shaded region in the illustrated circles...

Lesson Planet

#### Our Solar System - Comparing Planetary Travel Distances

NASA presents a mini-unit on distances in our solar system. It incorporates scientific concepts of gravity, mass, density, and payload while your aspiring astronauts also employ mathematics skills. They calculate speed, they determine...

Lesson Planet

#### Around the Clock

Young scholars discover the relationship between the circumference of a circle and its diameter. They find the length of an arc of a circle.Students use estimation strategies in real-world applications to predict results (i.e.,...

Lesson Planet

#### Parts of a Circle

Students explore circles. In this shapes and geometry lesson, students cut a circle from construction paper, then identify and label the center point, radius, diameter, and circumference. Students form a large circle and its parts using...

Lesson Planet

#### Pumpkin Predictions

It's time for Halloween and math! Perfect for Fall, this simple worksheet provides a grid for young mathematicians to record their predictions about a pumpkin's height, stem length, diameter, circumference, and weight. After learners...

Lesson Planet

#### Circles and Cylinders

In this geometry lesson, 10th graders break down a circle and identify the different parts. They discuss chords, diameter, radius, circumference, major and minor segment. There are 42 problems broken down into 5 different sections.

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

#### Unwrapping the Earth

In this surface area instructional activity, students identify and complete 5 different problems that include determining the amount of wrapping paper needed to cover the earth. First, they use a calculator and round to the nearest...

Lesson Planet

#### Making a Six-pointed Star

In this polygon worksheet, students identify and create a six-pointed star by completing 6 steps. First, they use a compass to trace a circle with a given radius. Then, students draw a point on circumference of the circle and place the...

Lesson Planet

#### Puck's Girdle

Fifth graders calculate the perimeters, areas, and volumes of everyday objects. They discuss the word problem involving Puck from the Shakespeare play "Mid-Summer Night's Dream," and invent and plan a method for solving the problem in...

Lesson Planet

#### Measuring Pumpkins and Our World

Students estimate the circumference of a pumpkin. They measure the pumpkin and other school objects, and record the measurements on worksheets.

Lesson Planet

#### Pumpkin Play

Have you ever examined a pumpkin and estimated the number of lines it has? In this math lesson, students count the actual number of lines, record and graph the results. They investigate the circumference, weight and buoyancy of the...

Lesson Planet

#### Tennis Ball Tubes

Students determine whether the height of a tennis ball tube or the distance around the tube is greater, or whether they are the same. Using the formula for the circumference and diameter of a sphere, they discuss the word problem, and in...

Lesson Planet

#### Discovering Pi

Define terminology related to a circle. Practice accuracy in measuring and then create a spreadsheet based on data collected from solving for parts of a circle. Groups can have fun analyzing their data as it relates to Pi.

Lesson Planet

#### Circumference and Area

Students measure the circumference, area, and diameter of different size circles. In this measurement lesson plan, students are given different size circular lids and calculate their circumference, area, and diameter.

Lesson Planet

#### Understanding Pi.

Pupils study the relationship between circumference and diameter to come up with Pi. "In this pi lesson, students measure, record and find the ratio "circumference/diameter" and their average which is an approximation of pi.

Lesson Planet

#### Density of the Human Body

In this density of the human body worksheet, students measure several parts of the body to calculate the body volume. Students convert the body volume to body mass and body density.

Lesson Planet

#### Absolute Value Inequalities

In this absolute value worksheet, 9th graders solve 10 different problems that are related to inequalities of numbers. First, they determine the absolute value of each of the inequality equations shown. Then, students write and solve an...

Lesson Planet

#### Exploring Circles

In this exploring circles learning exercise, 10th graders solve 12 different types of problems related to measuring circles in geometry. First, they refer to the figure on the sheet to name the center point, the three radii of the...

Lesson Planet

#### Have a Ball

In this measurement worksheet, students compare the bounce height of various sports balls. Then they evaluate the ball variables that may affect the bounce. Students also create a plan of their own to do the test bounce.

Lesson Planet

#### What is the Formula for the Area of a Circle?

Cut up a circle and make a parallelogram! What? No way! Yes way! Watch the instructor illustrate just how to cut up the circle and get that parallelogram to then get the formula for the area of a circle. It really works! Base,...