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Lesson Plan
Curated OER

Measure the Earth's Circumference

For Teachers 5th - 12th
Students explore geometry by conducting a science experiment. In this circumference measurement lesson, students review the Greek geographer Eratosthenes who first discovered the circumference of our planet. Students utilize...
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Lesson Plan
Curated OER

Review of Triangles

For Teachers 8th - 10th
Students investigate the Pythagorean Theorem. For this geometry lesson, students define angles and sides of right triangles. They calculate the area and surface area using formulas derived by the Pythagorean Theorem.
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Lesson Plan
Curated OER

Body Measuring Activity

For Teachers 4th - 6th
Learners explore geometry by participating in a measurement activity. In this human anatomy lesson, students identify the appropriate methods to measure human body parts and do so in class. Learners create a bar graph from their class...
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Lesson Plan
Curated OER

Perimeter Playground

For Teachers 2nd - 3rd
Students explore geometry by participating in a school measuring activity. For this perimeter lesson, students discuss the techniques and methods used in order to measure a large perimeter or geometric figure. Students utilize grid...
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Lesson Plan
Curated OER

Indoor and Outdoor Patterns

For Teachers Pre-K - K
Students explore geometry by participating in a visual illustration activity. In this pattern identification lesson plan, students explore inside their classroom and discuss patterns they find while tracing them on paper. Students attend...
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Lesson Plan
Pennsylvania Department of Education

Euler's Formula

For Teachers 7th - 9th
Students explore geometry by defining a list of vocabulary terms. In this shape characteristics instructional activity, students identify a number of different shapes and discuss the amount of edges, vertices, and faces using the Euler...
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Lesson Plan
Curated OER

Area Lesson Plan

For Teachers 7th - 8th
Learners explore geometry by using computer applications. In this spatial measurement lesson, students discuss the difference between area, weight, volume and other forms of measurement. Learners utilize computer applications to find the...
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Worksheet
Curated OER

Area and Perimeter

For Students 10th
In this area and perimeter instructional activity, 10th graders solve and complete 18 various types of geometry problems. First, they find the area of a figure shown with consecutive sides perpendicular. Then, students find the area and...
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Lesson Plan
Curated OER

Line Construction

For Teachers 9th - 11th
In this geometry worksheet, students construct perpendicular and parallel lines through a given points using a straightedge and a compass. There are 5 questions with an answer key.
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Lesson Plan
Curated OER

Angle Relationships

For Teachers 10th
Tenth graders explore the angle relationships that exist when two lines intersect. In this geometry lesson, 10th graders estimate the measure of given angles and use their graphing calculator tools. Students use this knowledge to find...
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Worksheet
Curated OER

Reflections

For Students 9th - 10th
In this geometry worksheet, students identify the different types of reflections across the x and y axis. There are 6 questions on this worksheet with an answer key.
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Worksheet
Curated OER

Vertical Angles

For Students 10th
In this geometry worksheet, 10th graders investigate vertical angles, solve for vertical angles using equations that are equal and relate it to solving linear equation. There are 10 problems on this worksheet.
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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

Pyramids

For Teachers 10th
In this Geometry worksheet, 10th graders solve problems involving the properties of a regular pyramid.  The two page worksheet contains a combination of seven multiple choice and free response questions.  Answers are...
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Lesson Plan
Curated OER

Chords of a Circle

For Teachers 10th
In 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.
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Worksheet
Curated OER

Midpoints and Bisectors

For Students 9th - 10th
In this geometry worksheet, students calculate the midpoints of polygons using coordinate pairs. They find the  angle bisector, altitude and median of the given triangles. There are 33 questions.
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Worksheet
Curated OER

Planes and Lines

For Students 10th
In this geometry worksheet, 10th graders determine the number of planes that can pass through a given point and are perpendicular to a given line.  The one page worksheet contains one multiple choice question.  Answer is...
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Lesson Plan
Curated OER

Parallel and Perpendicular Line Construction

For Teachers 9th - 11th
In this geometry worksheet, learners construct parallel and perpendicular lines given a straight edge and a compass. Their lines pass through a given point. There are 4 questions with an answer key.
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Worksheet
Curated OER

Inverse, Converse and Contra-positive

For Students 10th
In this geometry worksheet, 10th graders identify the inverse, converse and contra-positive in each given sentence. They rewrite the sentences to make the statement true. There are 6 questions with an answer key.
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Worksheet
Curated OER

Inverse and Converse

For Students 9th - 11th
In this geometry worksheet, students identify given statements for the inverse, converse and contra-positive of a conditional statement. There are 9 questions with an answer key.
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Worksheet
Curated OER

Distance on a coordinate plane

For Students 10th
In this geometry worksheet, 10th graders solve problems in which they find the distance between two points on a coordinate plane.  The two page worksheet contains a combination of eleven multiple choice and free response...
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Worksheet
Curated OER

Geometry Tracing and Matching Worksheet - Squares

For Students 2nd
In this geometry instructional activity, 2nd graders trace the squares on the left and draw a line to connect the ones that are the same size on the right.
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Worksheet
Curated OER

Grade 5 Geometry

For Students 5th
In this grade five geometry learning exercise, 5th graders utilizing mathematical strategies to calculate the perimeter of a triangle. Students recognize that the perimeter of a triangle is side a plus side b plus c.
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Worksheet
Curated OER

Grade 4 Geometry

For Students 4th
In this grade four geometry worksheet, 4th graders calculate the perimeter of a rectangle by figuring out the formula of the width and length of each side.

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