Mirror, Mirror on the ... Ground?

This activity allows students to go outdoors to measure the height of objects indirectly. Similar right triangles are formed when mirrors are placed on the ground between the object that needs to be measured and the student observing the object in the mirror. Students work in teams to measure distances and solve proportions.

This activity is meant to be a review activity after similar triangles have already been taught, and can be used as a summative assessment.

Resource ID#: 43087 Type: Lesson Plan

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General Information

Subject(s): Mathematics

Grade Level(s): 9, 10, 11, 12

Intended Audience: Educators

Suggested Technology: Computer for Presenter, Basic Calculators, LCD Projector, Microsoft Office

Instructional Time: 1 Hour(s) 30 Minute(s)

Keywords: similarity, triangles, similar triangles, AA triangle similarity, proportions

Instructional Component Type(s): Lesson Plan, Worksheet, Assessment

Resource Collection: General Collection

Aligned Standards

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