Identifying Similar Triangles

This 105-minute lesson series helps teachers assess how students reason about geometry, including how they use facts about the angle sum and exterior angles of triangles to calculate missing angles, apply angle theorems to parallel lines cut by a transversal, and interpret geometrical diagrams using mathematical properties to identify similarity of triangles. In order to complete this lesson, students will need whiteboards, pens, wipes, copies of the assessment tasks, pencils, markers, scissors, glue sticks, and poster paper.
Resource ID#: 199785 Type: Lesson Plan
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Direct Link: http://map.mathshell.org/materials/lessons.php?taskid=492&subpage=concept

General Information

Subject(s): Mathematics
Grade Level(s): 8
Intended Audience: Educators educators
Suggested Technology: Computer for Presenter, LCD Projector, Microsoft Office
Instructional Time: 1 Hour(s) 45 Minute(s)
Keywords: angles, angle theorems, geometry, similarities, abstract reasoning, problem solving
Instructional Component Type(s): Lesson Plan,  Worksheet,  Presentation/Slideshow,  Formative Assessment
Instructional Design Framework(s): Demonstration, Predict-Explain-Observe-Explain, Structured Inquiry (Level 2), Guided Inquiry (Level 3), Learning Cycle (e.g., 5E), Cooperative Learning
Resource Collection: Map.mathshell.org

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