Lesson Plan
Curated OER

Comparison Activities

For Teachers 5th - 11th
Students explore the size of the sun and it's temperature. Using the Internet, students visit given websites to compare the sun's diameter, outer layers, and mass to visual items students can relate to. They also compare the sun's...
Worksheet
Curated OER

Scale Drawing

For Students 8th - 10th
In this geometry worksheet, students use the correct units to measure distance, length, diameter and height. There are 8 questions with an answer key.
Worksheet
Curated OER

Perimeter and Circumference

For Students 10th
In this geometry worksheet, 10th graders are given shapes of rectangles and circles. They calculate the perimeter and circumference of the different polygons given values for the diameter or sides. There are 10 questions with an answer key.
Lesson Plan
Curated OER

Graphs, Stories, And Games

For Teachers 8th - 12th
In this graphs lesson plan, students read stories and present story situations on a graph.  They explore distance and diameter and explain graphs.  Students create their own stories to fit graphs.
Lesson Plan
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Chords of a Circle

For Teachers 10th
For this geometry worksheet, 10th graders calculate the length of a chord and the distance from the center of a circle or radius. They compare diameter, chords and radius. There are 10 questions with an answer key.
Lesson Plan
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Modeling Atoms

For Teachers 9th - 12th
Students create an atomic model using a computer program. In this technology lesson, students identify the difference between radius and diameter. They create circular patterns and spheres based on certain specifications.
Worksheet
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Area Of Circles

For Students 5th - 8th
In this math instructional activity, students complete 23 problems where they find the area of circles when the radius, diameter, or circumference is given. Examples are given in this well-designed instructional activity.
Lesson Plan
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"Use an Anemometer," said the Meteorologist

For Teachers 3rd - 5th
Students participate in an hands-on construction of an instrument to measure wind speed.
Lesson Plan
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Observing Mars in the Night Sky

For Teachers 9th - 12th
Students compare and contrast the orbits of Earth and Mars, locate the planet Mars, and diagram its retrograde motion.
Lesson Plan
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Theorems and Formulas for Circles

For Teachers 10th
In this theorems and formulas for circles worksheet, 10th graders solve and complete 13 different types of problems. First, they create a graphic organizer for all the given formulas for circles. Then, students use the labeled pictures...
Lesson Plan
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The Real Deal On Circles

For Teachers 5th
Fifth graders investigate circles and area. In this geometry lesson, 5th graders find the area, diameter and circumference of a circle. They estimate the data and then calculate it.
Lesson Plan
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Can You Canula?

For Teachers 8th - 9th
Students calculate the circumference of a circle. In this geometry lesson, students measure the diameter of a circle using micrometers or calipers. They investigate the relationship of the diameter to that of the value of Pi.
Lesson Plan
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Finding The Circumference Given The Radius

For Teachers 6th - 7th
Students develop an understanding of pi and the relationship between the diameter, radius and circumference. After a lecture/demo, students use construction paper and a compass to solve problems using diameter, radius and circumference.
Interactive
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Circles

For Students 10th
In this geometry worksheet, 10th graders determine the circumference and area of a circle given either the diameter or the radius. The one page interactive worksheet contains ten questions. Answers and hints are included. 
Interactive
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Cones

For Students 10th
In this geometry worksheet, 10th graders determine the volume of a cone, given either the diameter or radius and the height. The one page interactive worksheet contains ten questions. Answers and hints are included. 
Lesson Plan
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Bringing the Solar System Down to Earth

For Teachers 6th - 8th
Students develop a scaled down model of the solar system. In small groups, they calculate the scaled-down diameters of the planets and the sun, the scaled-down distance of the planets from the sun, complete two charts, and create a...
Lesson Plan
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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...
Interactive
Curated OER

Area of Circle Worksheets

For Students 10th
In this geometry activity, 10th graders calculate the area of circle give either the radius or the diameter. The one page interactive activity contains ten questions. Answers and  hints are included. 
Lesson Plan
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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.
Worksheet
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Cylinders and Cones Homework

For Students 9th - 12th
In this geometry instructional activity, students solve for the volume or surface area of cones and cylinders given the radius, diameter, or height. There are 25 questions.
Lesson Plan
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Inscribed Right Triangles

For Teachers 7th - 9th
Students calculate the measurements of the inscribed angles of a triangle. In this geometry activity, students relate the hypotenuse of a right triangle and the diameter of a circle to each other. They calculate the diameter of a circle...
Lesson Plan
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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...
Worksheet
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Surface Area of Hemisphere Worksheet B

For Students 8th - 10th
Learners determine the surface area of a hemisphere, given the diameter or the radius. This two page worksheet contains eight multi-step problems. Answers are provided on the last page.
Lesson Plan
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Light Beam

For Teachers 8th - 10th
Students measure and convert between units. For this geometry lesson, students investigate through measurements of distances. They relate the properties of circle to solving problems with radius, diameter and area.

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