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PPT
Curated OER

Chalkboard Challenge: Fifth Grade Math Review

For Teachers 4th - 5th
This PowerPoint addresses fifth grade math concepts, focusing mostly on geometry. The interactive math review game is in a "Jeopardy" style format and enables students to revisit the topics in geometry such as polygons, quadrilaterals...
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Lesson Plan
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Triangle Conjectures

For Teachers 10th
Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by...
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Worksheet
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Perimeter

For Students 10th
In this perimeter worksheet, 10th graders solve and complete nineteen various geometry problems. First, they find the length of given segments in addition to the perimeter of a kite. Then, students find the value of a variable so that...
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Worksheet
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Triangles

For Students 10th
In this geometry worksheet, 10th graders solve problems involving triangular inequality. They apply the proofs and theorem of triangles to solve these problems. There is an overview and one question.
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Worksheet
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Conditional Statements

For Students 9th - 10th
In this geometry worksheet, students read given sentences and identify the hypothesis and the conclusion of the conditional statements. There are 21 questions.
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Lesson Plan
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Picking Pythagoras

For Teachers 6th - 9th
Students discover that side measurement is used in determining angle classification of a triangle. By squaring sides, they predict whether triangles be right, obtuse, or acute. They prove the Pythagorean Theorem and use it to solve...
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Lesson Plan
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Triangle Inequality Theorem

For Teachers 8th - 10th
Students use the inequality theorem to solve triangles and their properties. In this geometry instructional activity, students are given spaghetti of different lengths and asked to create triangles. They conclude the necessary length...
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Worksheet
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SAT problem solving practice test

For Students 10th - 11th
In this algebra and geometry worksheet, learners review concepts dealing with angles, lines and basic word problems. They practice answering questions similar to the ones on the SAT.
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Lesson Plan
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Areas of Polygons

For Teachers 8th - 10th
Pupils calculate the are of regular polygons. For this geometry lesson, students create polygons on the computer and move it around to create different shapes. They explore the area of different polygons and how they inter-relate.
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Worksheet
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Challenge: Skills and Applications Lesson 2.4

For Students 9th - 10th
In this algebra worksheet, students create arguments using conjectures. They identify the sequence and the pattern and formula. They solve products and prove sum of integers. There are 8 questions.
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Worksheet
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Congruence of Triangles

For Students 10th
In this congruence of triangles worksheet, 10th graders solve 10 different problems that include determining the congruence of various triangles. First, they determine the length of two sides of a congruent triangle. Then, students...
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Lesson Plan
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Hidden Jewels of Geometry

For Teachers 5th - 8th
Students identify different geometric shapes, and arrange them artistically in original jewelry designs.
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Worksheet
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Drawing Quadrilaterals

For Students 6th - 8th
In this math worksheet, learners draw quadrilaterals and also find the sums of the inner angles for each. They practice drawing rhombuses as unique quadrilaterals.
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Worksheet
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The Isosceles Triangle Problem

For Students 10th
In this geometry worksheet, 10th graders solve a problem involving an isosceles triangle.  The problem appears to be deceptively easy, but instead requires the use of trigonometry to arrive at a correct solution.  The one page worksheet...
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Lesson Plan
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The Flat Earth

For Teachers 9th - 11th
Students differentiate between different planes. In this geometry lesson, students differentiate between a plane and a sphere. They discuss the Great Circle, Geodesic and Lune as it relates to the earth.
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Lesson Plan
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CSI Investigation of Congruence and Similarity

For Teachers 9th - 12th
Students differentiate between similarity and congruence using polygons. For this geometry lesson, students label triangles based on their properties. They find missing sides and angles using the interior sum theorem.
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Lesson Plan
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Strongest Polygon

For Teachers 9th - 12th
Students define and identify shapes by name. For this geometry lesson, students construct, identify and compare polygons based on the number of sides. They classify each shape based on their angle sum theorem.
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Worksheet
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Triangle Fundamentals Homework

For Students 9th - 10th
In this geometry worksheet, students identify the missing angles of non right triangles using the angle sum theorem. They solve for the unknown using algebra. There are 21 questions.
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Lesson Plan
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Pythagorean Theorem

For Teachers 7th - 8th
Pupils explore the history of Pythagoras and his contributions to mathematics. In this middle school geometry lesson, students use one inch tiles to investigate the Pythagorean Theorem and to find the length of the sides of a right...
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Lesson Plan
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Math is Beautiful

For Teachers 4th - 7th
Students explore how geometry is used on the composition of artworks by artists from different cultures. This lesson is equally suited for a Math or Art classroom at the late-elementary or early-middle school level.
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Lesson Plan
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Tessellations

For Teachers 7th
Seventh graders investigate geometric shapes using tessellations. In this geometry lesson, 7th graders practice tessellations using different shapes. They create different designs using tessellations.
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Worksheet
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4th Grade Math Worksheet

For Students 4th - 5th
For this 4th grade math review worksheet, learners respond to 60 multiple choice questions that review of fractions, decimals, geometry, number sense, and computation.
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Lesson Plan
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How Many Regular Polyhedrons Are There In This or Any Universe?

For Teachers 7th - 12th
Students examine the idea of "regularity" as it pertains to geometry.  In this geometry instructional activity students complete several assignments that are part of trihedral angles and regular polyhedrons.
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Lesson Plan
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The Distance to an Unapproachable Point

For Teachers 8th - 11th
Students use geometry or trigonometry to measure the distance of a far off point. They verify their measurements using a tape measure to check their work.