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Lesson Plan
Curated OER

Exploring Areas of Irregular Polygons

For Teachers 9th - 12th Standards
High schoolers solve for the area of different polygons. In this geometry activity, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.
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Lesson Plan
Curated OER

Polygon Sum Conjecture

For Teachers 9th - 10th
Young scholars calculate the sum of the angles of a polygon. In this geometry lesson, students use the interior angle formula of polygon based on the number of sides of the polygon. They identify the missing angle using algebra.
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Lesson Plan
Curated OER

Strongest Polygon

For Teachers 9th - 12th
Students define and identify shapes by name. In this geometry lesson plan, 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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Lesson Plan
Curated OER

Geometric Shapes

For Teachers 5th - 7th
Students identify polygons.  For this geometric shape lesson, students explore the characteristics of polygons.  They identify polygons, and classify triangles according to their sides and angles.  Students create a poster representing...
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Lesson Plan
Curated OER

Obtuse Angles

For Teachers 3rd
Third graders recognize and identify geometric shapes, work with manipulatives to reinforce understanding, and create polygons with various angles to display their knowledge of the different types of angles.
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Worksheet
Math Mammoth

Finding the Area of Rectangles, Parallelograms, and Triangles

For Students 9th
In this area of polygons activity, 9th graders solve two area of rectangles, one area of parallelogram, and ten area of triangles problems.  The formulas for finding the area of these figures are provided.
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Lesson Plan
Curated OER

Symmetry and Tangrams

For Teachers 6th
Sixth graders build figures out of tangrams. In this symmetry lesson, 6th graders view tangrams and identify the polygons included in them. Students divide into groups, identify their tangram pieces, define the lines of symmetry, and use...
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Lesson Plan
Curated OER

Napolean Triangle

For Teachers 9th - 11th
Young scholars 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 problems.
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Lesson Plan
Curated OER

Shape Up

For Teachers 6th - 8th
Learners explore differents types of triangles and quadriaterals. In this polygon lesson, students  model identify and compare two and three dimensional geometric figures. Learners create tangrams and discover the difference between...
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Lesson Plan
Curated OER

Interior/Exterior Polygon Angles and Tessellations

For Teachers 9th - 11th
Students discover the sum of the interior and exterior angles of several polygons. In this Geometers sketchpad lesson, students work in groups to find the stated measurements of triangles, quadrilaterals, pentagons and hexagons. Students...
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Worksheet
Math Mammoth

Similar Figures

For Students 7th - 9th
For this similar figure worksheet, students identify objects that are similar. They draw polygons according to instructions and determine their similarity. This one-page worksheet contains four multi-step problems.
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Lesson Plan
Curated OER

Areas of Trapezoids, Rhombuses and Kites

For Teachers 8th - 10th
Students calculate the area of different polygons. In this geometry lesson, students find the area for trapezoids, rhombuses and kites.
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Lesson Plan
Curated OER

Meet the Polygon Family

For Teachers 4th
Fourth graders investigate regular polygons. In this regular polygon lesson, 4th graders explore the attributes of different polygons. Students work in groups to complete a KWL chart regarding polygons.
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Lesson Plan
Pennsylvania Department of Education

Creating Polygons

For Teachers Pre-K - 2nd
Students describe, make and compare polygons. In this creating polygons lesson, students identify properties of quadrilaterals and describe common features of two dimensional shapes.
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Lesson Plan
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Curated OER

Transformations - Rotations in the Coordinate Plane

For Teachers 8th - 11th Standards
In this geometry activity, 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.
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Workbook
Math Sphere

Co-Ordinates

For Students 5th - 8th Standards
Challenge young mathematicians' understanding of the coordinate plane with this series of skills practice worksheets. Offering 10 different exercises that involve identifying ordered pairs, graphing polygons, and rotating/reflecting...
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Unit Plan
Curated OER

Transformations in the Coordinate Plane

For Teachers 9th - 12th Standards
Your learners connect the new concepts of transformations in the coordinate plane to their previous knowledge using the solid vocabulary development in this unit. Like a foreign language, mathematics has its own set of vocabulary terms...
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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.
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Lesson Plan
Curated OER

Plane Figures

For Teachers 5th
Fifth graders create polygons requested by their teacher. In this polygons lesson, 5th graders watch a video and listen to a song about polygons. Then, students take turns labeling various polygons and practice making polygons.
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Lesson Plan
Curated OER

Fractal and the Dragon Curve

For Teachers 11th - 12th
Students explore Fractal designs. In this geometry lesson, students observe the different polygons created in nature and relate it to math. They define polygons on planes and rotate polygons about a point.
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Lesson Plan
Curated OER

Quilt Geometry

For Teachers 7th
Seventh graders explore lines of symmetry, congruent polygons and patterns. They listen to "The Seasons Sewn," observe a PowerPoint presentation, and identify congruent polygons and visual patterns. Through an internet activity, 7th...
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Lesson Plan
Curated OER

Area of Combined Shapes - Turtle Combo

For Teachers 9th - 12th
Students graph polygons using the name and number of sides. In this geometry lesson, students identify the formula to calculate the area and perimeter of polygons. They relate the formula to different polygons and shapes.
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Lesson Plan
Curated OER

A Shapely Activity

For Teachers 5th
Fifth graders explore polygons in various shape activities. In this polygons lesson, 5th graders discuss and identify polygons by their number of sides. Students sort ceramic tiles by the number of sides on each piece. Students explore...
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Lesson Plan
Curated OER

Areeas of Parallelograms and Triangles

For Teachers 12th
Twelfth graders are able to deduce the area of polygons by using several methods such as coordinate method. They are able to apply the area of polygons to real life situations. Students apply the Pythagorean Theorem in problem solving...

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