Lesson Plan

Describing Angles

You'll see angles from every angle! Students will describe and compare different angles they see in everyday situations. Use this lesson on its own or use it as support to the lesson Classifying Triangles by Internal Angles.
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This lesson can be used as a pre-lesson for the Classifying Triangles by Internal Angles lesson plan.
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This lesson can be used as a pre-lesson for the Classifying Triangles by Internal Angles lesson plan.

Objectives

Academic

Students will be able to sort triangles based on features of their internal angles.

Language

Students will be able to describe angles using hand motions, images, and sentence frames.

Introduction

(3 minutes)
Angles: Which Doesn't Belong?Vocabulary Cards: Describing AnglesGlossary: Describing AnglesTeach Background Knowledge TemplateWrite Student-Facing Language Objectives Reference
  • Use familiar objects that have angles (e.g., high heel, paper corners, the letter K, the letter Z, the letter V, scissors, clock, etc.) and ask them to turn and talk to their elbow partner about what angles they see in the objects. Monitor their conversation for key terms such as "obtuse," "acute," "right angles," "sides," "larger," "smaller," etc., as a way to gain information about their background knowledge.
  • Allow students to use their home language (L1) or new language (L2) and use cognates for the word "angle" (e.g., ángulo for Spanish) as appropriate.
  • Write the student-friendly language objective on the board: "I can describe and identify angles using hand motions and key terms," and ask for a volunteer to read the objective to the class.