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Thou shalt not commit logical fallacies - Jesse Richardson, Andy Smith, Sam Meadon

Grades
6 to 12
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Find a clickable, online poster explaining the most common logical fallacies. Simply rolling your cursor over the icon for the fallacy will give a definition. Click on it to find ...more
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Find a clickable, online poster explaining the most common logical fallacies. Simply rolling your cursor over the icon for the fallacy will give a definition. Click on it to find a further explanation and an example. Reducing each fallacy to a single simple sentence makes these easier to understand, and the examples given are amusing. There is also a free downloadable PDF of all the fallacies and their explanations presented on this site. A free poster in PDF format is available in three sizes. The free poster can be found at the bottom of the first page of this site.
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tag(s): critical thinking (127), debate (42), logic (161), persuasive writing (58), reading comprehension (149), thinking skills (17)

In the Classroom

Most academic writing presents a premise to be proved (an argument). When you first start to have your students try to understand logical fallacies, show them the online poster for logical fallacies and get them started trying to find these fallacies in their everyday lives. You could assign a fallacy a week and have students write in a journal, or a little tablet when they come across one. Or collect them on a class wiki with a page for each fallacy type. You could even have them make up their own logical fallacies. Have students create online posters on paper or do it together as a class using a tool such as Web Poster Wizard (reviewed here) or PicLits (reviewed here. After introducing logical fallacies, have students peer edit papers to make sure the writer is not trying to support one of these fallacies. Of course, any speech and debate, or media strategies class would benefit from a review this site. During political seasons, be sure to share this site for evaluating politicians' positions.