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Lesson Plan
Jumping Into Geometry!
This lesson helps students understand the difference between polygons. It focuses on the root words of these terms to help students make connections to their prior knowledge, making it especially beneficial for ESLs.
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Learning Objectives
Students will be able to define and identify three types of polygons.
Introduction
(10 minutes)
- Tell students that today they will be learning about different types of polygons.
- Pass out lined paper to students.
- Explain that polygon is just a fancy word meaning a shape with three or more straight sides and angles, you may want to review the definition of "angle".
- Write the word "polygon" and its definition on the board, and have students copy this on their paper.
- Create a t-chart on the board underneath the definition. On one side write "examples." On the other side write "non-examples." Students should recreate this on their paper.
- Draw a picture of a square on the "examples" side. Explain that this is a polygon because it is a closed shape with four sides and four angles.
- Draw a picture of a circle on the "non-examples" side. Explain that although it is a closed shape, this is not a polygon because it does not have straight sides or angles.
- Draw a picture of a shape that is not closed on the "non-examples" side. Explain that although it has angles and straight sides, this is not a polygon because it is not closed.
- Give students a few minutes to work with a partner and continue drawing examples and non-examples of polygons.
- Have some students come to the board to share their examples and non-examples.