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.

Concepts

two-column proofs, geometric proofs, proofs, logical reasoning

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Additional Tags

math

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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