Developing Two-Column Proof Skills

Unit 3: Developing Logic and Proof
Lesson 4 of 9

Objective: SWBAT choose from a set of randomly ordered statements and reasons and arrange these into two column proofs of the vertical angles theorem, alternate interior angles theorem, consecutive interior angles theorem, and triangle interior angle sum theorem.

Big Idea: Can we do better than all the king's horses and all the king's men? this lesson, students will pick up the broken pieces of classic proofs and restore them to their original condition.

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6 teachers like this lesson
Math, Proofs, two, Triangle Sum Theorem, Vertical Angles Theorem
  105 minutes
parthenon two columns
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