April 2nd, 2008‘Shiver Me Timbers!’ Do I Have To Teach Logic?
Formal Logic…most of us never learned the rules in school and shudder at the very thought of teaching it! But if you are going to raise a classical scholar in your homeschool, you really need to become familiar with the concepts and terms. In fact, you may find after completing a few lessons that you actually enjoy this methodical way of constructing and evaluating arguments. In this last post in the series on step 2 of the classical trivium, “Thinking Critically,” I’ll briefly introduce you to the study of logic in laymen’s terms.
HISTORY
The western version of classical logic originated in Classical Greece with Aristotle. He called his argument the “syllogism.” Each statement followed a particular order containing a subject and a predicate. There are many vocabulary words, but three important ones to remember when teaching logic are: argument, reason, and conclusion.
METHOD
Reasoning shapes our thinking into intelligent patterns. When someone asks us for our reason for believing something, our minds have to go beyond the information given in order to decide, explain, predict, or persuade. Our reasons support our conclusion. So, a simple definition of logic is:
the system for using reasons and conclusions to construct and evaluate arguments
Whenever we give reasons to support our conclusions, we are presenting an argument. Officially, such reasons are called “premises.” Here’s the structure:
Reason 1 (first statement to justify the conclusion - evidence)
Reason 2 (second statement to justify the conclusion - evidence)
Conclusion (statement that explains, asserts, or predicts based on the evidence or reasons)
Here’s a real-life example of a formal argument:
Murder is against the law.
Destroying frozen human embryos is murder.
Therefore, destroying frozen human embryos should be against the law.
Traditional logic teaches methods for evaluating criteria like validity, truth, and soundness. Anthony Weston provides a brief overview of logic in his Rulebook for Arguments if you want an executive or top-level summary of the subject. In our own home, we’ve used two logic curricula: Canon Press and Memoria Press. My recommendation would be to purchase Memoria Press’ Traditional Logic, books 1 and 2, for a full year of high school credit. Most homeschoolers are ready to tackle this methodical workbook sometime between the 7th and 8th year.
Critical thinking will skyrocket once your kids begin to understand traditional logic. In lesson 5 of the second semester of the Memoria Press text, they learn how to apply all the methods for constructing and evaluating arguments to real-life. They can then take any newspaper article, identify the arguments including premises and conclusions, and evaluate with specific tools whether the argument is sound or not. This is a critical thinking skill that is rare in our culture and certainly unusual among teenagers; you owe it to your kids to give them these tools so that they are ready to take what they’ve determined and communicate their position effectively.
* * * * *
To recap the posts on step 2 of the classical homeschool trivium, “Thinking Critically,” are:
Three Ways to Prepare your Child for Logical Thinking
Top 10 Traits of a Critical Thinker
What Does your Child Need to Become a Critical Thinker?
Know Why You Believe What You Believe
Can a Critical Thinker be Creative, Too?
Why Writing is a Catalyst to Intellectual Development
‘Shiver Me Timbers!’ Do I Have to Teach Logic?
* * * * *
If you have enjoyed this post or any of the other posts in this series, and you have a favorite social bookmarking site like Stumbleupon, Facebook, Digg, Reddit, or Technorati, would you mind taking a minute to click on the bookmarking icon below and plugging our website as a favorite? We’d really appreciate any good recommendations that you could pass on to your friends.
Tags: arguments, Aristotle, classical scholar, communicate effectively, conclusion, construct argument, critical thinking, homeschool, Logic, premise, syllogism, trivium


