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Lesson Plan
Curated OER

Same, More, Fewer

For Teachers 1st
In this mathematics worksheet, 1st graders color each circle red and draw one blue circle for each red one. Then they circle more, fewer, or same to identify which circles are which, red and blue.
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Lesson Plan
Curated OER

Pushing Pivots

For Teachers 8th - 10th
Students calculate the area and diameter length of a circle. For this geometry lesson, students investigate the use of pivots as they review parts of a circle. They create a circle using cardboard and label all the parts.
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Worksheet
Curated OER

Arcs and Chords

For Students 10th
In this arcs and chords worksheet, 10th graders solve 6 different problems related to determining the arcs and chords of various circles. First, they define the 3 theorems that state the relationships between arcs, chords, and diameters....
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Worksheet
Curated OER

Area of Sector and Segment

For Students 10th
In this area of sector and segment worksheet, 10th graders solve and determine the area of 10 different illustrations. First, they determine the area of a shaded sector given the measurements. Then, students determine the area of each...
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Lesson Plan
Curated OER

Extending Patterns

For Teachers 1st
In this mathematics worksheet, 1st graders draw the shapes that they see in the pattern illustrated. Then they identify which shape comes first, which comes after the circle, and which comes after the square. Students also draw the shape...
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Worksheet
Curated OER

Count the Monkeys

For Students 3rd
In this counting monkeys worksheet, 3rd graders identify and complete 3 different problems that include counting monkeys in a circle diagram. First, they cut out the small circle and place it in the center of the larger circle. Then,...
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Lesson Plan
Curated OER

Geometric Probablitiy: Spinners and Dartboards

For Teachers 8th - 10th
Sstudents explore and analyze the properties of geometric areas.  In this geometry lesson plan, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles and compare and...
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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 instructional activity, students discuss the perpendicular relationship between a tangent line on a circle and the circle's radius.  Students use that...
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Lesson Plan
Curated OER

Covering and Surrounding

For Teachers 5th - 6th
Students develop techniques for estimating the area of a circle and use ideas about area and perimeter to solve practical problems. For this area and perimeter lesson, students apply the concepts of perimeter and area to the solution of...
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Lesson Plan
Curated OER

The Surface Area of a Cylinder

For Teachers 5th - 6th
Learners measure the circumference of a cylinder. In this cylinder lesson plan, students use round container lids and flexible rectangles to measure the circumference of the cylinder. They put the shapes together to make their own...
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Lesson Plan
Curated OER

Initial Fraction Ideas Lesson 1: Overview

For Teachers 4th - 6th
Students use the colors in their fraction circles to answer short answer questions about fractions. In this fractions lesson plan, students count the colors of their fraction circles and add them together to make fractions.
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Lesson Plan
Curated OER

Introducing Trigonometry

For Teachers 11th
Eleventh graders explore the three basic trigonometric functions. In this trigonometry/Algebra II lesson, 11th graders use GeoGebra and the unit circle to define the ratios of sides is a right triangles as they examine the full domain...
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Lesson Plan
Curated OER

Measuring the Earth

For Teachers 10th - 11th
Young scholars identify types of arcs and angles in a circle, find the measure of arcs and angles, and solve real world problems involving lengths of segments in circles, lengths, and areas.
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Lesson Plan
Curated OER

Fact Families

For Teachers 1st
In this mathematics worksheet, 1st graders create a fact family that uses specific numbers given. Then they draw eight circles, add five more, and write the fact out in a problem.
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Worksheet
Curated OER

Ordinal Numbers

For Students 6th
In this ordinal numbers worksheet, 6th graders solve 7 different problems that include identifying various ordinal numbers in patterns. First, they fill in the missing ordinal numbers in each pattern. Then, students place the items where...
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Lesson Plan
Curated OER

Radius, Diameter and Circumference

For Teachers 8th - 10th
In this circle worksheet, students use a drawing of a circle. The diameter is given. Students find the radius, circumference and area of the circle. On the second problem, students are shown a circle with a hole inside it. They compute...
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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 plan, 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

Shapes

For Teachers K
Students review basic shapes, such as circles, squares, triangles, and rectangles, find objects in those shapes in classroom, watch Clifford's Fun with Shapes video, practice reproducing four shapes, and rotate through four classroom...
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Lesson Plan
Curated OER

Finding PI

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

Discovering Pi

For Teachers 6th
Sixth graders discover Pi.  In this discovering Pi lesson, 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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Worksheet
Curated OER

Angles and Arcs

For Students 10th
In this angles and arcs worksheet, 10th graders solve 18 various types of problems related to determine various angles and arcs of a circle. First, they find the measure of each angle and arc of the first circle shown. Then, students...
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Lesson Plan
Curated OER

Initial Fraction Ideas Lesson 6: Overview

For Teachers 3rd - 5th
Students 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...
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Worksheet
Curated OER

Radian, The Snowman

For Students 10th - 12th
In this snowman worksheet, students label points on a circle with radian measures.  They identify the coordinates of the points outside the circle.  Students decorate the snowman.  This one-page worksheet contain 1 problm.  The answer is...
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Lesson Plan
Curated OER

Graphs

For Teachers 6th - 8th
Students investigate circle and bar graphs.  In this middle school mathematics lesson, students determine which kind of graph is suitable for a given situation and create circle and bar graphs.

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