Assessment

Mirror, Mirror I

Curated and Reviewed by Lesson Planet
This Mirror, Mirror I assessment also includes:

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.

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CCSS: Adaptable
Additional Tags
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