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Essentials of Formal Logic

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  1. Introduction
    Course Introduction: Essentials of Formal Logic (Preview Content)
  2. Chapter 1
    Lesson 1: Chapter 1.1 Formal vs. Informal Logic (Preview Content)
    3Topics
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    1 Quiz
  3. Lesson 2: Chapter 1.2 Deductive vs. Inductive Reasoning (Preview Content)
    2Topics
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    1 Quiz
  4. Lesson 3: Chapter 1.3 Categorical vs. Propositional Logic
    2Topics
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    1 Quiz
  5. Chapter 2
    Lesson 4: Chapter 2.1 Part I: Aristotle Gets the Ball Rolling: Classical Origins and Medieval Recovery
    2Topics
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    1 Quiz
  6. Lesson 5: Chapter 2.2 Part II: Aristotle Is Lost and Then Found: The Growth and Divergence of Modern Logic
    2Topics
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    1 Quiz
  7. Chapter 3
    Lesson 6: Chapter 3.1 Thinking About Thinking: The Nature of Formal Logic
    2Topics
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    1 Quiz
  8. Lesson 7: Chapter 3.2 The Three Acts of the Mind
    2Topics
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    1 Quiz
  9. Chapter 4
    Lesson 8: Chapter 4.1 Introduction to Argument Translation
    2Topics
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    1 Quiz
  10. Lesson 9: Chapter 4.2 Categorical Form Introduced
    2Topics
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    1 Quiz
  11. Lesson 10: Chapter 4.3 Propositions
    2Topics
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    1 Quiz
  12. Lesson 11: Chapter 4.4 Translating Arguments Step 1: Finding the Propositions
    2Topics
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    1 Quiz
  13. Lesson 12: Chapter 4.5 Translating Arguments Step 2: Finding the Subject Term and the Predicate Term
    2Topics
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    1 Quiz
  14. Lesson 13: Chapter 4.6 Translating Arguments Step 3: Affirmo and Nego
    2Topics
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    1 Quiz
  15. Lesson 14: Chapter 4.7 Translating Arguments Step 4: Supply the Proper Quantifier
    2Topics
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    1 Quiz
  16. Lesson 15: Chapter 4.8 Translating Arguments Step 5: Propositions Translated into Categorical Form
    2Topics
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    1 Quiz
  17. Chapter 5
    Lesson 16: Chapter 5.1 Introduction to the Square of Opposition
    2Topics
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    1 Quiz
  18. Lesson 17: Chapter 5.2 The Square of Opposition
    2Topics
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    1 Quiz
  19. Lesson 18: Chapter 5.3 Contradiction
    2Topics
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    1 Quiz
  20. Lesson 19: Chapter 5.4 Contrariety and Subcontrariety
    2Topics
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    1 Quiz
  21. Lesson 20: Chapter 5.5-5.6 Subimplication and Superimplication, The Square of Opposition and Inference Analysis
    2Topics
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    1 Quiz
  22. Chapter 6
    Lesson 21: Chapter 6.1-6.3 Introduction to the Relationships of Equivalence, Logical Equations, The Obverse Relationship
    2Topics
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    1 Quiz
  23. Lesson 22: Chapter 6.4 The Converse Relationship
    2Topics
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    1 Quiz
  24. Lesson 23: Chapter 6.5 The Relationship of Contraposition
    2Topics
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    1 Quiz
  25. Chapter 7
    Lesson 24: Chapter 7.1 Introduction to Syllogisms and Validity
    2Topics
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    1 Quiz
  26. Lesson 25: Chapter 7.2-7.3 Arranging the Syllogism, Categorical Syllogisms
    2Topics
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    1 Quiz
  27. Lesson 26: Chapter 7.4 Enthymemes
    2Topics
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    1 Quiz
  28. Lesson 27: Chapter 7.5 Moods and Figures
    2Topics
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    1 Quiz
  29. Chapter 8
    Lesson 28: Chapter 8.1 Validity and the Counterexample Method
    2Topics
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    1 Quiz
  30. Lesson 29: Chapter 8.2 Evaluating Validity: Terminological Rules 1 and 2
    2Topics
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    1 Quiz
  31. Lesson 30: Chapter 8.3 Evaluating Validity: Terminological Rules 3 and 4
    2Topics
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    1 Quiz
  32. Lesson 31: Chapter 8.4 Evaluating Validity: Qualitative Rules
    2Topics
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    1 Quiz
  33. Lesson 32: Chapter 8.5 An Introduction to the Venn Diagramming Method of Establishing Validity
    2Topics
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    1 Quiz
  34. Lesson 33: Chapter 8.6 Combining the Skills
    2Topics
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    1 Quiz
  35. Chapter 9
    Lesson 34: Chapter 9 Preamble
    3Topics
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    1 Quiz
  36. Lesson 35: Chapter 9.1 Introduction to Definitions and Disagreement
    2Topics
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    1 Quiz
  37. Lesson 36: Chapter 9.2 Types of Disagreement
    2Topics
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    1 Quiz
  38. Lesson 37: Chapter 9.3 Rules for Defining Words
    2Topics
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    1 Quiz
  39. Lesson 38: Chapter 9.4 Types of Definitions
    2Topics
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    1 Quiz
  40. Lesson 39: Chapter 9.5 Extension vs. Intention
    2Topics
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    1 Quiz
  41. Lesson 40: Chapter 9.6 Presuppositional Disputes
    2Topics
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    1 Quiz
  42. Lesson 41: Chapter 9.7 Pursuing Truth
    2Topics
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    1 Quiz
  43. End of Course Test
    End of Course Test: Essentials of Formal Logic
    1 Quiz
Lesson 42, Topic 2
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Discussion Questions

Lesson Progress
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  • The Cave is an allegory, which means that the different elements of the story are symbolic of different things in life. What are some different things that this story could correspond to in real life?
  • How could the story symbolize the process of learning and correctly applying logic?