Reflection: Developing a Conceptual Understanding Regular vs. Irregular Polygons - Section 1: Teacher Demonstration


During this lesson, I realized that I wanted to provide an opportunity for students to delve deeper into studying lines of symmetry so I created and shared another Google Presentation, Lines of Symmetry.pptx, for students to work on outside of our math time.

To provide students with concrete models, I passed around paper copies: Using Hands-On Models.MOV.

It took about 30 minutes to complete this project: Student Example of Lines of Symmetry.pptx. Again, students loved being able to draw on the computer to represent their thinking. Every student was 100% engaged!


  Developing a Conceptual Understanding: Reflection
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Regular vs. Irregular Polygons

Unit 8: Geometry
Lesson 6 of 7

Objective: SWBAT classify 2-D shapes by their properties.

Big Idea: Students will complete a powerpoint presentation and will explore the difference between regular and irregular polygons.

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10 teachers like this lesson
Math, regular polygons, supplementary angles, angles, Triangles, angles (Constructions), quadrilateral, geometric properties, irregular polygons, complementary angles, Polygon, shapes, classifying triangles
  100 minutes
students exploring
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