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Lesson Plan
Curated OER

Pi Mathematics

For Teachers 7th - 8th
Students will measure common everyday objects in order to calculate pi. In this measurement lesson plan, students measure the circumference and diameters of objects and fill them into a chart which helps them calculate pi.
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Lesson Plan
Willow Tree

Perimeter of Common Geometric Figures

For Students 8th - 11th Standards
Help learners understand that perimeter and circumference are one in the same. Learners apply their skills to determine the perimeter/circumference of triangles, rectangles, and circles. They then use the same strategy to find the...
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Worksheet
Curated OER

Circles

For Students 9th - 10th
In this geometry worksheet, students solve problems by finding the diameter, radius and chord of a circle. They also solve for the area of the circle. There are 10 questions with an answer key.
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Lesson Plan
Curated OER

Circumference and Area of Circles

For Teachers 5th - 6th
In this math worksheet, students learn to calculate the area and circumference of a circle. Students answer 4 word problems after reading the information and studying the examples.
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Lesson Plan
Curated OER

Using Circumference

For Teachers 9th - 10th
Students participate in a lesson that covers the concept of finding the circumference of a circle. The teacher covers relevant vocabulary with the students. They work in groups to measure objects and calculate the formula to find the...
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Lesson Plan
Curated OER

The Derivation of (Pi)

For Teachers 7th
Seventh graders groups measure the diameter and circumference of each of the circular objects in the room. They record their results on their student worksheets and access a computer spreadsheet program to compile their results.
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Worksheet
Curated OER

Math Practice: Circles

For Students 4th - 6th
In this circle learning exercise, students solve 8 problems: finding percentage increase, finding differences in area and perimeter, finding circumference and area.
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Lesson Plan
Curated OER

THE AREA OF A CIRCLE

For Teachers 7th - 12th
Students examine the relationship between circumference and diameter and how to use the formula to find the area of a circle.  In this circle lesson students divide into groups and complete an activity. 
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Worksheet
Curated OER

Perimeter, Circumference and Area

For Students 9th - 11th
In this measurement worksheet, students identify the area, perimeter and circumference of a diagram. They also find the size of a pond based on the diagram shown on the sheet. Finally, students calculate how much carpet is needed to be...
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Lesson Plan
Curated OER

"Sir Cumference and the First Round Table" by Cindy Neuschwander

For Teachers 6th - 8th
Students develop an understanding of measurable attributes of circles; develop a formula to determine the circumference of circles. They approximate the value of pi.
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Lesson Plan
Curated OER

Discovering Pi

For Teachers 4th - 11th
Students investigate the math concept of Pi (specifically, what pi is, the significance and how it is used in the real world). This is a hands on lesson in which the students actively participate with their investigations. The...
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Lesson Plan
Curated OER

Sir Cumference and the Dragon Pi

For Teachers 6th - 8th Standards
Geometry adventurers study circumference of a circle as they listen to Sir Circumference and the Dragon Pi, by Cindy Neuschwander. In groups, they use string to measure the diameter and circumference of circular objects and then consider...
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Lesson Plan
Curated OER

Can You Canula?

For Teachers 8th - 9th
Students calculate the circumference of a circle. In this geometry instructional activity, students measure the diameter of a circle using micrometers or calipers. They investigate the relationship of the diameter to that of the value of...
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Lesson Plan
Curated OER

Infinite Secrets

For Teachers 9th - 12th
Students duplicate the method that Archimedes used to estimate the value of pi. They complete a data table and find the approximate values of pi for three sets of polygons.
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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

Geometry in Nature

For Teachers 6th - 7th
Students 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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Lesson Plan
Curated OER

Geometric Relatioships

For Teachers 4th - 8th
Students explore measurements and geometric formulas. In this geometry lesson, students investigate pi as it relates to geometry. They collect data and use a chart to organize the data.
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Worksheet
Curated OER

Expressions and Operations

For Students 7th - 8th
In this expressions and operations worksheet, 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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Worksheet
Curated OER

Expressions and Operations

For Students 8th - 9th
In this expressions and operations worksheet, students solve and complete 5 different problems that include reading and solving each individual question. First, they determine the value of each equation given the variables. Then,...
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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. In 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

Circumference and Area of a Circle

For Teachers 10th - 11th
Students investigate the area and circumference of a circle. In this geometry instructional activity, students estimate and measure the radius, diameter and circumference of a circle. This assignment has an online part that is interactive.
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Lesson Plan
Curated OER

Putting the 'pi' in Pumpkin Pie

For Teachers 8th - 10th
Students use geometric formulas to divide a pumpkin pie. In this geometric formulas lesson, students review equations for area and circumference of a circle and divide a pumpkin pie to practice the formulas. Students use the Pythagorean...
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Lesson Plan
Curated OER

Unit Circle Triangle

For Teachers 11th - 12th
Students find the different ratios of a right triangle. In this geometry instructional activity, students apply the concept of the Pythagorean theorem as they identify the different angles and parts of a Unit Circle. They find the ratios...
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Lesson Plan
Curated OER

Around and Around

For Teachers 6th - 8th
Students create a spreadsheet to record information about circular objects. They measure and record information from a variety of objects. Students calculate the ratio of the circumference to the diameter of each object. They find the...