# discuss what it means for an argument to be valid or invalid in logic.

Project description
Assignment 1: Discussion Questions

By Wednesday, June 29, 2016, please respond to one of the questions below, posting your responses in the Discussion Area beneath each question. Read about and research your question using your textbook, the online lectures, and scholarly Web sites. Try to look at all sides of the problem and at different approaches. Paraphrase the key information, citing your sources. Demonstrate that you understand all the key terms and subject-specific vocabulary in the question as you answer the question.

Question Chosen:

Discussion Question 4
The following contains a simple argument. First, identify the premises and conclusion. Second, discuss what it means for an argument to be valid or invalid in logic. Third, prove that this argument is invalid assuming that it is using the counterexample method. Fourth, explain how your counterexample proves that this argument is invalid.

If it is raining, I will buy an umbrella. I bought an umbrella. Consequently, it must be raining.

Maximum Points
Critically evaluates and analyzes the topic by defining, explaining, and providing support for the conclusions.
20
Demonstrates understanding of key concepts and terms from weekly topics through integration, definition, or explanation.
20
Integrates weekly topics effectively through a structure of synthesis, application, and/or critique.
20
Supports ideas and demonstrates understanding with textual, visual and/or oral references and examples. Where relevant, uses proper MLA citation format and style.
10
Employs correct and standard college-level English grammar, mechanics, spelling, punctuation and sentence structure, appropriate logic and voice.
10
Participates actively in the discussion. Includes at least two substantive responses. Where relevant, may provide constructive critique of other students work or ask thoughtful questions.
20
Total:
100

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