This lesson discusses common logical fallacies.

This lesson introduces deductive reasoning and the laws of logic. It is 4 of 7 in the series titled "Deductive Reasoning and the Laws of Logic."

This lesson introduces deductive reasoning and the laws of logic. It is 6 of 7 in the series titled "Deductive Reasoning and the Laws of Logic."

A book excerpt, this page discusses John Venn's "simple, geometric method for checking the validity of syllogisms," with diagrams, examples, and related links.

This slideshow focuses on supporting details; it discusses their purpose, the audience, and the point to be made. It lists the five most common types of supporting details: facts, statistics, opinions, examples, and personal observations...

Power Point presentation on scientific method for NAS 102 Human and Environmental Biology II.

This lesson will help a learner understand counterexamples. It is 7 of 7 in the series titled "Counterexamples."

This lesson will demonstrate the use of CPCTC in triangle congruencey proofs. It is 2 of 4 in the series titled "CPCTC."