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Methods of Logic

The second part of Formal Logic, introducing more advanced elements of the Syllogism.

Total classes: 12

Prerequisite: Introduction to Formal Logic, live or recorded course

Suggested grade level: 9th to 12th grade

Suggested credit: One full semester Logic II or Methods of Logic

Special Notes: None


This course continues the introduction to the Syllogism begun in the Introduction to Formal Logic course. In this class, we will explore various forms of arguments, introducing and explaining conditionals, disjunctive syllogisms, dilemmas, and enthymemes. We will also learn how to construct extended chains of syllogistic reasoning, including polysyllogisms and sorites.


Course Outline:

Class One: Introduction and Review

Class Two: Elements of the Syllogism: Figure

Class Three: Elements of the Syllogism: Mood

Class Four: Terms and Reduction of the Syllogism

Class Five: Indirect Reduction of First figure Syllogism

Class Six: Indirect Reduction (continued)

Class Seven: Constructing a Syllogism

Class Eight: Translating Into Syllogistic Form

Class Nine: Enthymemes

Class Ten: Hypothetical Syllogisms and Conditionals

Class Eleven: Pure Conditional Syllogisms

Class Twelve: Course Review

Materials and Homework

Course Materials: Traditional Logic, Book II: Advanced Formal Logic (Classical Trivium Core Series) by Martin Cothran (Jun 1, 2000) and Traditional Logic II, Key by Martin Cothran (Jun 1, 2008). Can be found at www.memoriapress.com or your favorite used curriculum forum.

Homework: Homework will be a combination of reading assignments in the textbook and homework problems which appear at the end of each text module. Students should expect to spend 45 minutes to an hour reading, and up to an hour working through the homework problem sets. There will also be extracurricular homework assignments such as logic puzzles or word problems for extra practice.

There will be three automated quizzes, one mid-term, and one final exam.

Important Dates

Class dates: Fridays, January 12 to April 12, 2024 (No class Feb. 23 or March 29)

Starting time: 2:30 PM Eastern (1:30 Central; 12:30 Mountain; 11:30 Pacific)

Prerequisite: Introduction to Formal Logic, live or recorded course

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