Lesson Plan
Perkins School for the Blind

Circle Time

For Teachers 1st - 12th
Oftentimes children or teens with one or more disability are reluctant to participate in whole-group activities. Foster good participation, verbal expression, and social skills through daily circle time activities. Each day you and...
Lesson Plan
Curated OER

Super Shapes Part 2 - Circles

For Teachers 5th - 6th
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...
Lesson Plan
Illustrative Mathematics

Eight Circles

For Teachers 6th - 9th Standards
We are used to finding the area of a circle by plugging the radius into an equation. Here, learners are required to go further to find multiple areas and calculate the difference. They must detect a pattern in order to figure out the...
Lesson Plan
Texas Instruments

Drawing a Line Tangent to a Circle

For Teachers 9th - 12th Standards
Explore lines tangent to a circle. In this math lesson plan, students manipulate circles and lines on a TI calculator. They draw a circle  and analyze perpendicular lines intersecting the circle in only one place. This activity...
Lesson Plan
Curated OER

Area of Circles and Probability

For Teachers 8th - 12th
Learners investigate the area of squares and circles. In this geometry lesson plan, students calculate the area and probability of simple events. They work on a laptop using Safari.
Lesson Plan
Illustrative Mathematics

Seven Circles III

For Teachers 9th - 11th Standards
A basic set-up leads to a surprisingly complex analysis in this variation on the question of surrounding a central circle with a ring of touching circles. Useful for putting trigonometric functions in a physical context, as well as...
Lesson Plan
EngageNY

Rectangles Inscribed in Circles

For Teachers 9th - 10th Standards
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...
Lesson Plan
2
2
Illustrative Mathematics

Making a Clock

For Teachers K - 2nd Standards
Have a fun time teaching children to read analog clocks with this whole-group math activity. Using large sets of the numerals 1-12 and 0, 5, 10...55, the teacher creates a large clock on either the carpet or the white board, explaining...
Lesson Plan
Curated OER

Exploring Circles

For Teachers 9th - 12th
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 Plan
Curated OER

Counting Circles

For Teachers K Standards
Here is another learning game that will engage your kindergartners and support them with their counting fluency. Forming a circle where everyone faces inward, choose a counting sequence (counting frontward or backward) with no more than...
Lesson Plan
Healthy Native Youth

Chapter 1: Circle of Life

For Teachers 6th - 8th Standards
Volition, or will-power, is the focus of a lesson that brings forth the Native symbol, the Circle of Life, to instill the importance of responsible decision-making. Scholars take part in six activities that empower them to reflect on...
Lesson Plan
Virginia Department of Education

Angles, Arcs, and Segments in Circles

For Teachers 9th - 11th Standards
Investigate relationships between angles, arcs, and segments in circles. Pupils use geometry software to discover the relationships between angles, arcs, and segments associated with circles. Class members use similar triangles to...
Lesson Plan
Dick Blick Art Materials

Start with a Circle...

For Students K - 12th
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
Lesson Plan
Curated OER

Perpendicular Segments in a Circle

For Teachers 9th - 12th Standards
High schoolers explore the concept of circles as they construct a circle using a program such as Cabri Jr. Learners construct a chord and a diameter that are perpendicular, then measure the bisected chord and notice that both sides of...
Lesson Plan
Curated OER

Circumscribing a Circle About a Triangle

For Teachers 9th - 12th Standards
Pupils circumscribe a circle about a triangle. They construct a triangle using Cabri Jr and then circumscribe it. They then use knowledge of perpendicular bisectors and circumcenters to locate the center of the circle and then...
Lesson Plan
Curated OER

Construction Circles

For Teachers 9th - 12th Standards
Pupils investigate the number of points needed to determine a unique circle in a plane. Using Cabri Jr., they apply construction techniques to generate a circle that passes through a given number of points.
Lesson Plan
Curated OER

Time

For Teachers 6th - 12th
Students make a sundial. In this time lesson plan, students determine the time of the day by creating a sundial. They check the time on the sundial, hourly, for one week. Afterward, they explore what happened to the shadows in reference...
Lesson Plan
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1
Illustrative Mathematics

Right Triangles Inscribed in Circles II

For Teachers 9th - 10th Standards
So many times the characteristics of triangles are presented as a vocabulary-type of lesson, but in this activity they are key to unraveling a proof. A unique attack on proving that an inscribed angle that subtends a diameter must be a...
Lesson Plan
Avi Writer

The Cross of Lead, At the Edge of the World, and The End of Time

For Teachers 5th - 7th
A fan of Ari's Crispin trilogy? Here is a packet that contains study guides for all three Crispin novels: The Cross of Lead, At the Edge of the World, and The End of Time.
Lesson Plan
Texas Instruments

Area of Circles

For Teachers 9th - 12th Standards
Students explore circles. In this algebra/geometry lesson, students discover the formula for the area of a circle, as they investigate the ratio of the area of a circle to the radius^2.
Lesson Plan
Curated OER

Discovering Pi/Welcome to Pi Day

For Teachers 9th - 12th
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...
Lesson Plan
Curated OER

ASL: Building a functional vocabulary

For Teachers 2nd - Higher Ed
Best resource ever! Teaching and learning to teach ASL just got easier. For special education teachers or those working with hearing impaired young scholars, this lesson provides story and time telling practice using ASL. Each blue link...
Lesson Plan
Curated OER

Calendar Time

For Teachers K Standards
Use circle time to work on counting. Kindergarteners practice the months of the year, say the full date, chart the day's temperature, count to 100, and sing the alphabet song. This kind of daily routine cultivates deep roots for...
Lesson Plan
2
2
Curated OER

Civil War Literature Circle

For Teachers 5th - 8th Standards
Historical fiction can be a valuable asset when learning about the past. Integrate several novels written about the Civil War into your social studies unit, with groups of four working collaboratively to comprehend the novel from...

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