Lesson Plan
Curated OER

Geometry: Cut, Construct and Think

For Teachers 5th - 8th
Students explore polygons. In this geometry skills lesson plan, students complete an activity that requires them to solve geometry problems that involve polygons as they piece together geometric shapes. Students analyze the shapes they...
Lesson Plan
Curated OER

Folding to Make Shapes

For Teachers 2nd
Second graders identify different polygons and their attributes. In this geometry lesson, 2nd graders get to know polygons by studying the vocabulary and finding polygons in their classroom. They create these shapes and then find their...
Lesson Plan
Curated OER

2-D Polygons

For Teachers 6th - 8th
Pupils investigate the concept of two dimensional polygons. They complete a vocabulary chart with the teacher or in independently. Students are shown various polygons in order to classify them and then asked to draw one of them from memory.
Lesson Plan
Curated OER

Cut, Construct and Think

For Teachers 4th - 5th
Students complete geometrical shapes construction activities. In this geometrical concepts lesson, students cut shapes from a worksheet to create a geometrical study activity. Students analyze their shapes and complete a table. Students...
Lesson Plan
Curated OER

Napolean Triangle

For Teachers 9th - 11th
Learners investigate the Napoleon triangle theory. In this polygon lesson, students  differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...
Lesson Plan
Curated OER

Buttons, Buttons, Everywhere!

For Teachers K
Students compare, sort, and describe shapes. Using a button collection, students identify the shape, color number of holes, etc. Students play a description game with the buttons. They create a chart and name items that are the same...
Lesson Plan
Curated OER

Identify Polygons: Algebra/Geometry Institute

For Teachers 8th
Eighth graders classify geometric figures.  In this polygon lesson, 8th graders identify given geometric figures.  They compare and contrast different polygons.  Students name line segments, identify parallel lines, and...
Lesson Plan
Shodor Education Foundation

Visual Patterns in Tessellations

For Teachers 7th - 10th Standards
Geometers explore the concept of tessellations. They use a tessellation applet to manipulate shapes and design their own tessellation using the applet.
Lesson Plan
Curated OER

Living in a Geometrical World

For Teachers 3rd - 5th
Students participate in a series of hand-on, online, and multimedia activities to examine 2 dimensional and 3 dimensional shapes. They describe common geometric solids. They construct rectangular prisms using straws and ribbon.
Lesson Plan
Alabama Learning Exchange

Polygons-Changing Area Versus Changing Perimeter

For Teachers 5th - 8th Standards
Investigate the area and perimeter of polygons in this geometry lesson. Young geometers use grid paper to draw a quadrilateral and calculate its area and perimeter. They also read The Greedy Triangle to identify the changing shape of...
Lesson Plan
Curated OER

Measurement

For Teachers 7th
Seventh graders measure surface area. For this geometry lesson, 7th graders find the surface area of various geometrical shapes. Using a computer program, students compute the area of 2-D and 3-D shapes.  Students use...
Worksheet
Curated OER

Compare Area and Perimeter of 2D Shapes

For Students 5th - 6th
In this area and perimeter worksheet, students compare area and perimeter of pairs of figures, determining which has either the greatest area or perimeter. A reference web site is given for additional activities. 
Lesson Plan
Curated OER

Geoboard Area

For Teachers 3rd - 6th
Students explore the basic geometric shapes and geometric shape vocabulary through the use of geoboards and virtual geoboards. They create a variety of shapes with a partner, build ten different rectangles on their geoboards, and...
Lesson Plan
Curated OER

Area and Perimeter of Polygons

For Teachers 10th
In this geometry worksheet, 10th graders calculate the perimeter and area using the specific formula for that polygon. There are 5 questions with an answer key.
Lesson Plan
Curated OER

Introducing Angles

For Teachers 6th
Sixth graders identify, compare and interpret the characteristics of polygons and angles in order to meet spatial sense, geometry and measurement standards. They also sort shapes into three categories, polygons (regular and irregular)...
Lesson Plan
Curated OER

Space and Shape in Geometry:

For Teachers 7th - 12th
Students are asked to visualize three-dimensional figures and apply this visualization to problem solving.
Worksheet
Curated OER

Nets and 3 Dimensional Figures

For Students 5th
In this nets and 3 dimensional figures worksheet, 5th graders look at the 3D figure and the net and mark yes or no if it is an accurate representation.
Interactive
Curated OER

Shapes and Angles

For Students 4th
Are your geometry whizzes learning about angles and shapes? This online worksheet gives 10 multiple choice questions based on images and word problems. Concepts include deducting angle degree, classifying shapes, and identifying angle...
Lesson Plan
Curated OER

Poly-Mania

For Teachers 9th - 12th
This hands-on lesson takes young geometers on a tour of 2D polygons and 3D polyhedrons. After exploring different web resources and discussing geometric shapes, small groups construct models of polyhedrons using bendable straws. Note:...
Worksheet
Curated OER

Similar Shapes

For Students K - 1st Standards
In geometry, similar and congruent shapes are often confused. Shapes that are similar are the same shape, but a different size. This activity gives young learners some practice in identifying similar shapes. There are five polygons...
Worksheet
Curated OER

Transformations and Translations in Geometry

For Students 8th - 10th Standards
In this transformations and translations in Geometry worksheet, learners use geometric shapes and grids to translate six transformations in each of two activities.
Lesson Plan
Curated OER

Mirror, Mirror

For Teachers 5th - 6th
Geometry students use hinged mirrors to discover that the regular polygons are composed of triangles tessellating around a center point. They sketch triangles on paper models of the regular polygons having 3 to 10 sides and compute the...
Lesson Plan
Curated OER

Does Your Field Measure Up

For Teachers 9th - 11th
Learners measure angles using a plane table kit. In this geometry lesson, students use trigonometric identities to find the values of the length of a football field.
Lesson Plan
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Curated OER

Transformations - Rotations in the Coordinate Plane

For Teachers 8th - 11th Standards
In this geometry lesson, math scholars brainstorm examples of rotations.  Using the SMARTboard, students observe a rotation. They create their own rotation using graph paper. Finally, pupils complete a worksheet and graph rotations.