How do you see yourself? Young mathematicians consider whether it's possible to view their whole bodies in a mirror with a length that is half their height. They write a letter to a friend explaining their positions mathematically.

Concepts

angle of incidence, reflections, congruent triangles

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Additional Tags

math

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Instructional Ideas

• Team up with an English teacher for the lesson to enhance the connection to letter writing
• Have a debate between those who think the situation is possible and those who think it isn't
  

Classroom Considerations

• Learners must be familiar with congruent triangles and congruence criteria

Pros

• Answer key includes diagram of possible solution
• Provides a student handout
  

Cons

• None

Common Core

HSG-SRT.B.5