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Module 6 Discussion Activity Problem Set
1. Which of the following are correct applications of the transformation rule cited? Say
Correct or Incorrect. Remember that the order of the premises does not matter.
a) (A V ~B) ~C, (A V ~B) /:. C
M.P. Incorrect
Peer 2
2. Here is the argument or reasoning you have to work on:
P1: There are informative things which aren't useful.
P2: Some websites aren't useful.
C: Websites aren't informative.
3. Here is the argument or reasoning you have to work on:
P1: If a is
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Discussion Activity
1. Which of the following are correct applications of the transformation rule cited? Say Correct or
Incorrect. Remember that the order of the premises does
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Introduction to Logic and Critical Thinking
Module 7: NonClassical Propositional Logics
Multi Valued Logic
Multivalued Propositional Logics (168169)
Classical logic is committed to exactly two truth values: truth and falsehood
Some arguments support th
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Introduction to Logic and Critical Thinking
Module 7: NonClassical Propositional Logics
Introduction
In this module we consider one way of extending or modifying system P to make it less vulnerable to the
(modern) fallacy of ignoratio elenchi, the fallac
Chapter 7 NonClassical Propositional Logics

System P is vulnerable to the fallacy of ignoratio elenchi, the fallacy in which an
arguments premisses turn out to be irrelevant or unrelated to its conclusions.
System RP is one way to prevent the fallacy o
Module #7: Group Discussion Activity
Group Discussion Activity
1. Suppose the propositions A, B, and C are as given below. Suppose further that A, B,
and C are all true. Determine the truth values of each of the following formulas of RP.
A = Socrates is/w
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Formal Systems Validity and Consistency
Deductive Validity & Invalidity (141142)
An argument is (deductively) valid iff
it is (logically) impossible for the premises to be tru
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Introduction to Logic and Critical Thinking
Module 5: Formal and Informal Logic
Logical Form
Logical Form Repetition (9798)
Bill has $5 in his pocket
Therefore, Bill has $5 in his pocket
Sue has visited California
Therefore, Sue has visited California
(P
Introduction to Logic and Critical Thinking
Module 7: NonClassical Propositional Logics
Discussion Activity
1. Suppose the propositions A, B, and C are as given below. Suppose further that A, B, and C are all true.
Determine the truth values of each of t
Module 6 Discussion Activity Problem Set
1. Which of the following are correct applications of the transformation rule cited? Say
Correct or Incorrect. Remember that the order of the premises does not matter.
a) (A V ~B) ~C, (A V ~B) /:. C
M.P. Incorrect
Module #5: Group Discussion Activity Answer Key
1. For each of the following propositional form, decide whether the propositions under
it are uniform substitution instances of that form. If yes, choose Y, if not, choose N.
1) p ~q
a) A ~ A
[Y]
Proof: Mak
Introduction to Logic and Critical Thinking
Module 1: The Quarrel
Discussion Activity
As part of the Discussion Activity 1 you are invited to discuss the questions from the DA 1 Problem set
(below) among yourselves within your assigned small discussion gr
Introduction to Logic and Critical Thinking
Module 4: Elementary Logic
Discussion Activity
1. Determine whether the following propositions are True [T] or False [F].
a. "Some valid arguments have false conclusions."
b. "Some invalid arguments have false c
Module #7: Group Discussion Activity
Group Discussion Activity
1. Suppose the propositions A, B, and C are as given below. Suppose further that A, B,
and C are all true. Determine the truth values of each of the following formulas of RP.
A = Socrates is/w
Chapter 8 Term Logic

Aristotles logic (or term logic) is the first system of formal logic ever developed.
Contains two main parts:
o Theory of onepremiss arguments theory of immediate inference.
o Theory of twopremiss arguments theory of the syllogism
Discussion Activity 1 Answer Key
Questions 15:
For each of the following arguments, identify the premises and the conclusion and place the argument
in standard form. Clearly write down the propositions that are premises and which are conclusions.
Question
Introduction to Logic and Critical Thinking
Module 8: Term Logic
Discussion Activity
1. Identify each of the following propositions as having the form A, E, I, or O, then place it in standard
categorical form. In each case, clearly indicate the subject an
Introduction to Logic and Critical Thinking
Module 5: Formal and Informal Logic
Discussion Activity
Part 1
For each of the following propositional form, decide whether the propositions under it are uniform
substitution instances of that form. If yes, choo
Module #4: Elementary Logic
Group Discussion Activity
1. Determine whether the following propositions are True [T] or False [F].
1) Some valid arguments have false conclusions. [T]
Example: Pr. 1: All people have 3 heads
Pr. 2: You are human
Conc.: Theref
Discussion Questions Answer Key
1. Identify each of the following propositions as having the form A, E, I, or O, then
place it in standard categorical form. In each case, clearly indicate the subject
and the predicate terms.
2. Draw a Venn diagram represe
Introduction to Logic and Critical Thinking
Module 2: The Debate
Ad Populum
The Ad Populum (34)
An ad populum argument
occurs whenever a conclusion is drawn, or invited to be drawn, on the basis of an appeal to popular
belief
If the appeal
is relevant, th
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Conditional Rules
Conditional Transformation Rules (127)
Example Proof
To Prove
(A C) follows from A and ~B and (A ~B) C)
Proof
1. A
Premise
2. ~B
Premise
3. (A ~B) C)
Premise
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Formal Systems Intro
Formal Systems (123)
The primitive basis for a formal system (or logistic system) has two parts:
An object language, dened by
a vocabulary
a grammar (or fo
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Biconditional Rules
Biconditional Transformation Rules (128)
Double Negation (DN)
Implication (Impl)
p : ~ ~p
p q : ~p q
Commutation (Comm)
Association (Assoc)
p q : q p
p q :
Introduction to Logic and Critical Thinking
Module 6: Formal Deductive Systems
Introduction
Until now we have been relying on a somewhat intuitive understanding of many logical concepts. In this
module we want to rectify this by showing how logic can be o
DISCUSSION ACTIVITY 1
Questions 15:
For each of the following arguments, identify the premises and the conclusion and place the argument
in standard form. Clearly write down the propositions that are premises and which are conclusions.
Question 1
It is ri
Discussion Activity 2
Determine whether each of the following contains an Ad Populum, Ad Verecundiam, or Ad
Misericordiam argument. If yes, determine further whether it involves a corresponding fallacy. Answer
Y (Yes) or N (No) in the corresponding blanks
INTRODUCTION TO LOGIC AND CRITICAL THINKING
Module 2: The Debate
Ad Populum
The Ad Populum
(34)
An ad populum argument
occurs whenever a conclusion is drawn, or invited to be drawn, on the basis of an appeal to popular belief
If the appeal
is relevant, th
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Introduction & Syllabus
2017SAPHIL12098AIntroduction
to
Critical
ThinkingKOROLEV98A
Welcome to PHIL 120 DE!
May
2017
Dear online Logicians and Critical Thinkers;
Introduction & Syllabus