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This lesson provided by:
Author:Priscilla Godwin-Harden
System: Elmore County
School: Stanhope Elmore High School
Lesson Plan ID: 23935

Polygons All Around Us! (This lesson is geared to a standard high school geometry class.)


This is a hands-on lesson that introduces students to polygons and their properties. It also promotes visual learning by having students identify how polygons are used in the world around us. Students will be given the opportunity to see the importance of geometry in the construction of almost everything in our world. Students will be able to state properties of different geometric figures.
This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.

Content Standard(s):
TC2(9-12) Computer Applications6. Utilize advanced features of multimedia software, including image, video, and audio editing.
TC2(9-12) Computer Applications9. Practice ethical and legal use of technology systems and digital content.
TC2(9-12) Computer Applications11. Critique digital content for validity, accuracy, bias, currency, and relevance.
MA2015(9-12) Geometry9. Prove theorems about lines and angles. Theorems include vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; and points on a perpendicular bisector of a line segment are exactly those equidistant from the segment's endpoints. [G-CO9]
Local/National Standards:  
Primary Learning Objective(s):

Students should be able to tell the properties of different geometric shapes. Students will observe, identify, and see the importance of geometric shapes that are everywhere around them.

Additional Learning Objective(s):  
Approximate Duration of the Lesson: 91 to 120 Minutes
Materials and Equipment:

Copies of uploaded attachments.

Technology Resources Needed:

Digital camera and computer lab with microsoft powerpoint.


The students will need to have taken a computer applications class in order to become proficient in using the digital camera and the microsoft powerpoint program. Provide a tutorial on using the digital camera and creating a powerpoint presentation for students who may not have had a computer class.

1.)Draw a pentagon on the board and tell the students that it is a polygon. Have the students use this drawing to develop the definition of what a polygon is. Then provide students with the definition of a polygon (See attachment). Give the students the name of a polygon and then have them draw that polygon. Have some students show that drawing. Then show pictures of these polygons and explain properties of each (See attachment). Attachments are provided for the definition of a polygon, pictures of polygons, properties of polygons, and key terms for this lesson on polygons.

2.)Point out to students the different geometric shapes that are found in the classroom and assign project on polygons.

3.)The students will need to get into groups of two, walk around the school campus, and take photos of different geometric shapes that are found in the construction of buildings. They will need to have at least ten photos with at least four different geometric shapes.

4.)The students will visit the computer lab to prepare a slide show of the photos that were taken of the various geometric shapes. Also, they will need to find at least four famous buildings/homes in different countries on the internet to include in the presentation to show how geometric shapes are used in the construction of these buildings/homes.

5.)The students will show their presentations and tell what they learned from this assignment. A rubric is provided for students to assess each others work. After the slide show presentations, students will play Polygon Capture using the Illuminations link.
(Polygon Capture)
In the context of a game, students move from a simple description of shapes to an analysis of how properties are related.

6.)ELL students can work on these websites for reinforcement of identifying polygons.

Attachments:**Some files will display in a new window. Others will prompt you to download. Quadrilaterals.rtf
Polygons All Around Us Grading Sheet.rtf
Properties of Polygons.rtf
Key Terms.rtf
Assessment Strategies:

Each student will be graded based on the powerpoint presentation that is prepared. Also, students will be asked to score each others presentations based on the provided rubric. A rubric for this will be attached for the teacher and for the students to use. This rubric can be modified. Lead the students in a discussion about the diversity among the geometrical shapes that are found in different contries.


This lesson can be extended by having students develop their slide shows with more content or just being creative with it.


Peer tutors can be provided to help students who may need more assistance.

Each area below is a direct link to general teaching strategies/classroom accommodations for students with identified learning and/or behavior problems such as: reading or math performance below grade level; test or classroom assignments/quizzes at a failing level; failure to complete assignments independently; difficulty with short-term memory, abstract concepts, staying on task, or following directions; poor peer interaction or temper tantrums, and other learning or behavior problems.

Presentation of Material Environment
Time Demands Materials
Attention Using Groups and Peers
Assisting the Reluctant Starter Dealing with Inappropriate Behavior

Be sure to check the student's IEP for specific accommodations.
Variations Submitted by ALEX Users:
Alabama Virtual Library
Alabama Virtual Library

Hosted by Alabama Supercomputer Authority
The University of Alabama at Birmingham
The University of Alabama at Birmingham
The Malone Family Foundation
The Malone Family Foundation
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