Instructional Video

Two-Column Proofs: Lesson

Why is it a two-column proof? A video introduces the class to the concept of a two-column proof and how to set one up. The segment of a playlist on basic geometry highlights the types of reasons that can be in a proof.

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Instructional Ideas
  • Start by using two-column proofs to solve an equation and give a reason for each step
Classroom Considerations
  • Pupils should be aware of how a proof problem is given
  • Individuals should know what postulates are
  • This video is hosted on YouTube
Pros
  • Includes a link to other resources
  • Contains an outline of lessons in reasoning and proof
Cons
  • None