Chapter One:

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

** 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.

Tutorials

**Tutorial One:** **Basics: Formalities and Informalities**

*Exercises*

1.1a Multiple Choice

1.1b Statements (Borrowed from *Power of Logic Online*...no need to sign in.)

1.1c Araucaria Tree Diagrams

HW help

**Tutorial Two: Simple Arguments **

*Exercises*

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*)

HW help

**Tutorial Three: Evaluating Arguments**

*Exercises*

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.)

HW help

**Tutorial Four: Complex Arguments **

*Exercises*

1.4a Complex Arguments I

1.4b Araucaria Tree Diagrams

HW help

**Tutorial Five: [gold]** ** Proofs I** (Remember that "[gold]" means the most difficult material and it's **not covered in PHL 1000**.)

*Exercises*

1.5a [gold] Proofs

Reference

**Chapter One ****Reference**

Quizzes

Q1.1 First Concepts

Q1.2 Arguments

Q1.3 Deductive and Inductive

Q1.4 Big Overview Quiz for the entire chapter (oops, skip question 5; also question 9's canned answer is incorrect. Can you guess the right one?)