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Lesson Plan
Curated OER

Mandalas, Polygons and Symmetry

For Teachers 9th - 11th
Students create a geometric pattern using mandalas, polygons and symmetry. In this geometry lesson, students analyze the mathematics involved in making the mandalas, including the shapes and symmetry. Students create their own mandalas...
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Worksheet
Curated OER

Sides and Vertices of Shapes

For Students 4th - 6th
In this sides and vertices worksheet, students identify how many sides and vertices various shapes have. A reference web site is given for additional activities.
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Activity
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Curated OER

Task: Grain Storage

For Teachers 7th - 10th Standards
Farming is full of mathematics, and it provides numerous real-world examples for young mathematicians to study. Here, we look at a cylinder-shaped storage silo that has one flat side. Given certain dimensions, students need to determine...
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Lesson Plan
Curated OER

Basic Right Triangles

For Teachers 2nd - 4th
Elementary schoolers examine the attributes of triangles. In this triangle lesson, learners compare regular triangles and right triangles. They explore vertices and angles and investigate obtuse and acute angles. Pupils draw multiple...
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Lesson Plan
Curated OER

Patterns Here, There, and Everywhere!

For Teachers 4th - 6th
Upper graders access the Microsoft Word program and create patterns by utilizing certain keys on the keyboard. They create picket fences, smiley faces, and hearts. It seems that this lesson has as much to do with keyboarding skills as it...
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Lesson Plan
Curated OER

Let's Play Mathematical Baseball

For Teachers 3rd - 5th
Students explore the concept of spelling geometric terms and words with number prefixes. In this spelling geometric terms and words with number prefixes lesson, students play a game of baseball. Students spell words correctly to advance...
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Lesson Plan
PBS

Geometry: Hide and Seek

For Teachers 5th - 7th Standards
A geometry game that resembles Battleship is the foundation for hide and seek where "hiders" draw shapes on coordinate planes and "seekers" must guess the shape and its location based on questions and clues. Reproducible, paper-sized...
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Lesson Plan
National Security Agency

Classifying Triangles

For Teachers 4th - 8th Standards
Building on young mathematicians' prior knowledge of three-sided shapes, this lesson series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy Triangle,...
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Lesson Plan
Curated OER

Marshmallow Figures

For Teachers 4th - 6th
Students enjoy making 3-D figures while learning about rectangular prisms, pyramids, vertices, edges, and faces. After a lecture/demo, students use marshmallows, toothpicks and a worksheet imbedded in this lesson to create 3 dimensional...
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Worksheet
Curated OER

Side Lengths of Similar Shapes

For Students 7th - 10th
In this geometry skills worksheet, learners examine 4 pairs of similar shapes and use their problem solving skills and the information provided to calculate the length of segments.
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Lesson Plan
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NASA

Pop! Rockets

For Teachers K - 8th
Off they go — launching rockets is fun. The lesson plan contains templates to build paper rockets that can be launched from a PVC pipe launcher. Individuals or groups build the rockets and determine the shapes for their fins. Included...
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Lesson Plan
EngageNY

Problem Solving and the Coordinate Plane

For Students 6th Standards
Class members investigate rectangles on the coordinate plane. They determine the length of line segments in the coordinate plane with the same x-coordinate or same y-coordinate and then solve geometric problems involving perimeter and...
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Lesson Plan
Curated OER

Narrow It Down

For Teachers K - 4th
Ever played 20 Questions? A similar game helps young learners practice asking and answering yes-or-no questions. Spread out several objects, preferably all similar with slight variations (buttons or coins would work well). A leader...
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Assessment
Inside Mathematics

Rugs

For Teachers 8th Standards
The class braids irrational numbers, Pythagoras, and perimeter together. The mini-assessment requires scholars to use irrational numbers and the Pythagorean Theorem to find perimeters of rugs. The rugs are rectangular, triangular,...
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Worksheet
Curated OER

Identify Different Types of Triangles

For Students 5th - 6th
In this geometry worksheet, students identify different kinds of triangles. Students are given four triangles with their measurements and are to determine which triangle it is by choosing from six different kinds.
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Worksheet
Curated OER

Geometry Skills: Solid and Plane Figures

For Students 7th - 10th
In this geometry skills activity, students respond to 4 questions that require them to examine geometric figures and change them to solid figures and plane figures.

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