Formal and Informal Reasoning Basics
Each chapter is divided up into tutorials, a reference manual, quizzes, and exercises (1.3a, 2.3b, etc.; 2.3b means "chapter two, tutorial 3, problem set 2 ").
Do the exercises as you go through each tutorial!
In this chapter, we take up the basics of logic. We'll see what formal and informal logic are and that they are also called "deductive" and "inductive" logic. We'll try to be clear on just how reasoning is represented in language, in an "argument", and some preliminaries about how we are to recognize, analyze and evaluate arguments.
General Instructions for each chapter: Make sure you do the exercises along with working through each tutorial. You may take notes by dragging key sections of tutorials or exercises into a word processor. After completing a chapter, you may want to print out the reference manual.
Tutorial One: Basics: Formalities and Informalities
1.2a Standard Form I
1.2b Standard Form II
1.2c Standard Form III
1.2d Identifying Arguments I (This one is from the Power of Logic Online...no need to sign in; same for the next two.)
1.2e Identifying Arguments II (This one is from the Power of Logic Online)
Tutorial Three: Evaluating Arguments
1.3a Validity and Truth: Dragging
1.3b Valid and Sound: Multiple Choice
1.3c Deductive / Inductive
1.3d Valid, Sound, Inductive, Deductive
1.3e Matching: Concepts (This one is from the Power of Logic Online -- interesting and useful but clearly from a different author! You will need to figure some things out for this one.)
Tutorial Four: Complex Arguments
Tutorial Five: [gold] Proofs I (Remember that "[gold]" means the most difficult material and it's not covered in PHL 1000.)
1.5a [gold] Proofs
Chapter One Reference