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Lesson Plan
EngageNY

Properties of Tangents

For Teachers 9th - 12th Standards
You know about the tangent function, but what are tangent lines to a circle? Learners investigate properties of tangents through constructions. They determine that tangents are perpendicular to the radius at the point of tangency, and...
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Activity
5280 Math

Pythagorean Triples

For Teachers 10th - 12th
From Pythagorean triples to the unit circle. Learners use the Pythagorean Theorem to find Pythagorean triples and then relate their work to the unit circle in a fun algebra project. Their discovery that x^2+y^2 is always equal to one on...
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Lesson Plan
Virginia Department of Education

May I Have Fries with That?

For Teachers 6th
Not all pie graphs are about pies. The class conducts a survey on favorite fast food categories in a lesson on data representation. Pupils use the results to create a circle graph.
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Worksheet
DK Publishing

Draw the Shape ~ Counting Circles

For Students Pre-K - K Standards
In order to count circles, youngsters have to know what they look like! First, they examine a circle, trace two by following the arrow, and draw a couple on their own. Now that they are familiar with this shape, they count and record the...
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Lesson Plan
EngageNY

Properties of Trigonometric Functions

For Teachers 11th - 12th Standards
Given a value of one trigonometric function, it is easy to determine others. Learners use the periodicity of trigonometric functions to develop properties. After studying the graphs of sine, cosine, and tangent, the lesson connects them...
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Assessment
Concord Consortium

Circumscribed Polygon

For Students 11th - 12th Standards
Trigonometry teachers often go off on a tangent, and here's a worksheet that proves it! First, young mathematicians use a formula with tangent to prove a formula correct for area. Then, they draw conclusions about the area of a circle...
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Lesson Plan
Project Maths

Trigonometric Functions

For Teachers 9th - 12th Standards
From a circle to a cycle! The final instructional activity of a five-part series challenges learners to use points from the unit circle to plot a repeating pattern. The repeating patterns become the graphs of the trigonometric functions....
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Lesson Plan
Curated OER

Sarah, Plain and Tall - Intro to Literature Circle jobs

For Teachers 3rd - 4th
Students read a book with each student having a specific job for the class.  In this literature lesson, students read Sarah, Plain and Tall over 10 days, dividing up responsibilities for each student to make sure everyone understands the...
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Organizer
WHB Elementary School Band

Circle of Fifths: Major Keys

For Students 2nd - 12th
How many sharps and flats are their in each of the major keys? Help keep your young musicians sharp with a printable template that models how to identify the signature for the major keys' sharps and flats.
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Assessment
1
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Balanced Assessment

Oops! Glass Top

For Students 9th - 12th Standards
 A short assessment asks participants to find the original radius required to replace a table top. The problem provides a hypothetical situation of having a segment of a broken glass table top. Pupils find the radius of the circular top...
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Lesson Plan
EngageNY

Close Reading of Pages 4 - 7 and 12 - 15 of Bullfrog at Magnolia Circle: Bullfrog Circle

For Teachers 3rd Standards
Scholars take part in a close reading of pages four through seven and 12-15 of the book, Bullfrog at Magnolia Circle: Bullfrog Circle by Deborah Dennard. Readers identify the story's main idea, list its key details, and examine...
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Worksheet
Curated OER

Circles in Circles

For Students 4th - 5th
In this circle instructional activity, students use a diagram of 4 concentric circles to complete a set of 4 questions. A reference web site is given for additional activities.
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Lesson Plan
Curated OER

Equations of Circles

For Teachers 10th - 12th
Learners will define circle and radius. In this radius lesson,  students are given a circumference, they will write an equation and sketch the circle. Learners will match graphs of circles to their equations.   
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Lesson Plan
Curated OER

Circles And Cylinders

For Teachers 6th - 8th
Students investigate some of the mathematical concepts involved in the study of circles. They first practice finding the circumference of a circle by finding the diameter and performing the calculation. The lesson delivery is done using...
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Worksheet
Curated OER

Arcs in Circles

For Students 10th
In this arcs in circles worksheet, 10th graders identify 10 different circles and the measurement of their arcs. First, they determine the length of a minor arc to the nearest integer. Then, students determine the radius of a circle...
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Lesson Plan
Curated OER

Circle Graphs

For Teachers 6th
Sixth graders interpret, create, and display data in a circle graph. In this circle graph lesson plan, 6th graders use a compass, protractors, pizza boxes, and more to create a circle graph and analyze the data they put into it.
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Worksheet
Curated OER

The Center of a Circle

For Students 10th
In this center of the circle worksheet, 10th graders solve 5 different center of the circle measurements. First, they draw a circle and add two points on it. From there, students construct a line segment and a midpoint on the line...
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Worksheet
Curated OER

Graphs of Circles

For Students 10th
In this graphs of circles worksheet, 10th graders solve 10 different problems that include the graphs of circles with various measurements. First, they write the equation of a circle whose diameter is a given number and whose center is...
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Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different problems. First, they find the two segments perpendicular to a given circle. Then, students find the line tangent to the circle illustrated and the sides marked. They...
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Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different types of problems. First, they find the measures of each segment given the center of a circle. Then, students find the length of a side of a triangle shown within a...
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Lesson Plan
Curated OER

Finding the Circumference and Area of a Circle

For Teachers 6th
Sixth graders discover what circumference is.  In this measurement lesson, 6th graders identify the radius and diameter of different circles. Students discover how to find the area of a circle using the radius and diameter.
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Interactive
Curated OER

Making Circle Graphs

For Students 5th - 8th
In this circle graphs instructional activity, students answer multiple choice questions about how to make circle graphs. Students answer 10 questions total.
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Worksheet
Curated OER

Graphs of Circles

For Students 10th
In this graphs of circles worksheet, 10th graders solve and graph 10 different problems related to graphing various types of circles. First, they write the equations of a circle with a given center and radius. Then, students determine...
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Worksheet
Curated OER

Exploring Circles

For Teachers 10th
In this exploring circles worksheet, 10th graders solve 10 different types of problems that are related to determining the different measures of a circle. First, they define a circle and its center. Then, students refer to the given...

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