Proof and Reasoning

Skill Checklist

See everything you need to know in this unit and with an interactive checklist to check your progress.

Speed Run

Improve speed and accuracy with a timed multiple-choice quiz.

Speed Run

Improve speed and accuracy with a timed multiple-choice quiz.

Feeling shaky on the material? Check out a lesson:

Introduction to the concept of proofs, proof by deduction, and proof with even and odd numbers.

The concept of a proof by induction with different types of examples.

So far, we have learned to prove that statements are true. In this lesson, we learn strategies to prove that statements are not true.

Feeling shaky on the material? Check out a lesson:

Speed Run

Improve speed and accuracy with a timed multiple-choice quiz.

Feeling shaky on the material? Check out a lesson:

Introduction to the concept of proofs, proof by deduction, and proof with even and odd numbers.

The concept of a proof by induction with different types of examples.

So far, we have learned to prove that statements are true. In this lesson, we learn strategies to prove that statements are not true.