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Lesson Plan
Curated OER

Ara of Circles

For Teachers 8th - 10th
Students identify the differentiate the different properties of circles and parallelograms. In this geometry lesson, students calculate the area of each solid and identify the formula. They relate Pi to the circumference of a circle.
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Lesson Plan
Curated OER

Arc Length - Horse

For Teachers 9th - 12th
High schoolers define an arc and calculate its length. In this geometry lesson, students find examples of arc in the real world. They show their understanding of arcs through problem solving.
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Lesson Plan
Curated OER

Consistent Circles

For Teachers 8th - 12th
Students create a design of a circle. In this geometry lesson, students identify the measure of the diameter and radius of a circle. They graph and analyze their collected data and write equations based on direct variation.
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Worksheet
Curated OER

Count to 3

For Students K
In this counting to 3 worksheet, students count rectangles and circles up to the number 3. Students complete 2 problems where they count shapes on this worksheet.
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Worksheet
Curated OER

Counting Exercise

For Students Pre-K - 1st
In this counting activity, students count circles and triangles up to the number 5. Students complete 2 problems total on this activity.
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Worksheet
Curated OER

Fractions

For Students K
In this fractions worksheet, students analyze 3 fraction expressions. Kids choose which multiple choice division represents the part that each arrow is pointing to. Students check off each of their choices.
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Worksheet
Curated OER

Circumference and Area

For Students 6th
For this circumference and area worksheet, 6th graders find the circumference and area of circles when the diameter is given. Students complete 9 problems.
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Worksheet
Curated OER

Geometry Regents Bimodal

For Students 9th - 10th
For this geometry worksheet, students solve problems that are bimodal. They define properties of circles and triangles. There are 117 questions.
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Lesson Plan
Curated OER

Compound Locus

For Teachers 7th - 10th
Students investigate circles and compound locus. In this geometry instructional activity, students identify the distance from a point to a line. They use Cabri software to create lines and circles.
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Lesson Plan
Curated OER

Area of Triangle using the Semi-Perimeter and Radius

For Teachers 8th - 10th
Students investigate the properties of circles. In this geometry lesson, students calculate the area and perimeter of a triangle. They identify the perimeter and radius length of a circle.
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Lesson Plan
Curated OER

Circumscribed Polygons

For Teachers 9th - 10th
Students investigate polygons and construct ferris wheels. In this geometry lesson, students create a circle and differentiate properties of circles and polygons. They compare the relationship between angles and circumscribed polygons.
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Lesson Plan
Curated OER

The Circle's Measure

For Teachers 3rd - 7th
Pupils explore circumference and diameter. In this math lesson, students apply their knowledge of circumference and diameter to solve mathematical riddles. Pupils apply this knowledge to find circumference and diameter of various objects.
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Lesson Plan
Curated OER

Space Circles

For Teachers 5th
Fifth graders calculate the diameters and radius of planets as a book is read to them. In this diameter and radius lesson plan, 5th graders read the book Space Circles and calculate the measurements based on the information in this book.
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Worksheet
Curated OER

Finding the Angle Measurements in Isosceles Triangles

For Students 9th
In this angles worksheet, 9th graders find the angle measurements in four isosceles triangles.  Two of these triangles are drawn inside a circle, where two of the sides of the triangles are formed by radii.
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Worksheet
Curated OER

Six Activities Regarding Circles and Cylinders

For Students 9th - 10th
In this circles and cylinders instructional activity, students complete six activities answering sixteen questions.  These activities include a discovery of the ratio of circumference to diameter and the formula for area of a circle. ...
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Worksheet
Curated OER

Circles

For Students 10th
In this geometry worksheet, 10th graders apply the circle segment theorems to determine the indicated segment length. The one page worksheet contains twenty problems. Answers are not provided.    
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Worksheet
Curated OER

Circles: Finding Circumference

For Students 9th - 12th
In this circles worksheet, students find the circumference of 20 circles.  Students find the circumference given the radius, diameter, and area of various circles.
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Worksheet
Curated OER

Write the Parts of the Circle in the Place Holders

For Students 9th - 11th
In this parts of a circle worksheet, students place the names of 6 different parts of a circle in rectangular place holders. They use labels such as cord, secant, diameter, radius, tangent, and center.
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Lesson Plan
Curated OER

Area and Circumference of Circles

For Teachers 8th
Eighth graders find the area and circumference of circles. For this area and circumference of circles lesson plan, 8th graders follow a step by step lesson and then demonstrate the skills on their own with circles they are given.
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Worksheet
Curated OER

Perimeter of a Circle Worksheet

For Students 6th - 8th
In this perimeter of circles worksheet, middle schoolers find the perimeter of 6 circles given a diameter.  Students find the perimeter in terms of Pi.
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Lesson Plan
Curated OER

Tangent Properties

For Teachers 9th - 12th
Students explore properties of tangent lines.  In this properties of tangent lines lesson, students discuss the perpendicular relationship between a tangent line on a circle and the circle's radius.  Students use that relationship to...
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Lesson Plan
Curated OER

Discovering Pi

For Teachers 6th
Sixth graders discover Pi.  In this discovering Pi lesson plan, 6th graders measure the diameter and circumference of various circular objects.  Students record their measurements in a table.  Students discuss how Pi relates to the...
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Interactive
Curated OER

All About Circles

For Students 6th - 8th
In this all about circles worksheet, students interactively answer 10 multiple choice questions about circles, then click to check their answers.
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Lesson Plan
Curated OER

Initial Fraction Ideas Lesson 6: Overview

For Teachers 3rd - 5th
Pupils use fraction circles to observe fractions in smaller parts and to complete charting and word problem activities. In this fraction lesson plan, students complete chart problems, word problems, and fraction comparing problems using...