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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 7th - 8th
Students develop a formula that describes the functional relationship of the circumference of a circle to its diameter. Working with a partner, they measure the diameter and circumference of circular objects in order to discover the...
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Lesson Plan
Curated OER

Geometry in Nature

For Teachers 6th - 7th
Learners examine how the circumference, diameter, and the relationship of Pi of a circle are related. They count the summer rings of a tree to determine its growth.
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Worksheet
Curated OER

Angles and Arcs

For Students 10th
In this angles and arcs worksheet, 10th graders solve 8 different problems that relate to determining the measure of various angles and arcs of a circle. First, they define a central angle and the difference between a major and minor...
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Worksheet
Curated OER

Circumference and Area

For Students 10th
In this circumference and area worksheet, 10th graders solve nine problems relating to geometric shapes. They find the circumference of a circle and the perimeter of a triangle and a six-sided figure. Students also find the area of a...
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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

Tangent Properties

For Teachers 9th - 12th
Students explore properties of tangent lines.  In this properties of tangent lines lesson plan, 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

Around the World

For Teachers 6th - 8th
Students find the circumference of various round objects.  In this finding the circumference of various round objects lesson, students find the circumference of the Earth.  Students find the circumference of trees, tires, and...
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Worksheet
Curated OER

Discovering Pi

For Students 5th - 10th
In this math instructional activity, students find the radius, diameter, and circumference of circles when pi is given. Examples are given in this well-designed instructional activity.
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Worksheet
Curated OER

Geometry: Shapes, Area, Perimeter

For Students 6th - 8th
For this geometry worksheet, students match 5 shapes to several terms, determine the radius and diameter from 2 diagrams, and find the area and perimeter of 3 problems.
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Worksheet
Curated OER

Quiz: Area of Polygons and Circles

For Students 9th - Higher Ed
For this area worksheet, students compute the area of each of ten specified shapes. Seven of the shapes are quadrilaterals, one is a circle, and two shapes are triangles.
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Worksheet
Curated OER

Count the Monkeys

For Students 3rd
In this counting monkeys learning exercise, 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....
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Worksheet
Curated OER

Arcs and Chords

For Students 10th
In this arcs and chords instructional activity, 10th graders solve 7 different types of problems related to identifying arcs and chords in a circle. First, they find the measure of each arc to the nearest tenth, if O is the center point....
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Lesson Plan
Curated OER

Understanding Pi.

For Teachers 8th - 9th
Students study the relationship between circumference and diameter to come up with Pi. "In this pi instructional activity, students measure, record and find the ratio "circumference/diameter" and their average which is an approximation...
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Lesson Plan
Curated OER

Sizing Pumpkins

For Teachers 5th
Fifth graders study the sizes of pumpkins. They measure and record the diameters of pumpkins. They create five subtraction problems and solve them. They weigh their pumpkins, record the data and select two pumpkins to make a graph of...
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Worksheet
Curated OER

Volume and Surface Area of Solids

For Students 10th
In this solids worksheet, 10th graders solve and complete 10 different word problems that include determining the volume and surface area of various solids. First, they determine the surface area of a cube as described. Then, students...
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Worksheet
Curated OER

Perimeter and Circumference

For Students 7th - 8th
In this perimeter and circumference learning exercise, learners observe diagrams and determine their perimeter or circumference. Diagrams include triangles, circles, parallelograms, rectangles, and composite figures. This one-page...
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Worksheet
Curated OER

Expressions and Operations

For Students 7th - 8th
In this expressions and operations learning exercise, students solve and complete 5 different problems that include identifying expressions and using the order of operations. First, they determine the value of a given expression and its...
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Lesson Plan
Curated OER

Don't Burst My Bubble

For Teachers 6th - 8th
Students practice using measuring techniques by examining bubbles.  In this geometry lesson, students utilize mathematic formulas to discover the circumference and diameter of soap bubbles they blow.  Students practice creating...
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Lesson Plan
Curated OER

Sound Box

For Teachers 5th - 8th
Young scholars make simple observations and identify relevant variables, such as frequency and diameter. They then discuss the relationship between variables. The task assesses students' abilities to make simple observations and make...
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Lesson Plan
Curated OER

Geometric Probablitiy: Spinners and Dartboards

For Teachers 8th - 10th
Syoung scholars explore and analyze the properties of geometric areas.  In this geometry instructional activity, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles...
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Lesson Plan
Curated OER

The Surface Area of a Cylinder

For Teachers 5th - 6th
Pupils 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

Circular "Mandala"

For Teachers 7th - 12th
Learners create a nonobjective design from a magazine photo (or personal photograph) using a view finder. By using colored pencils the drawing use layers to recreate the colors in the magazine picture.
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Worksheet
Curated OER

Volume and Surface Area

For Students 10th - Higher Ed
In this volume and surface area worksheet, students find the volume in each of the ten problems listed and write their measurements in terms of the larger amount. They find the volume of a sphere, a rectangular solid, and a cylinder....

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