For those who believe the Web fosters only barely mindful surfing, we offer the following site as counterargument. Not to be confused with fallacies are paradoxes: "a puzzling conclusion we seem to be driven towards by our reasoning, but which is highly counterintuitive, nevertheless" -- also known as brainteasers for logicians. The Internet Encyclopedia of Philosophy (see the August 14, 1998 ...

Associate Professor Colin Allen and Professor Michael Hand, both of Texas A&M University, have created an online version of their introductory logic textbook, Logic Primer (The MIT Press), to supplement the instruction of formal logic at the university level. The online text consists of four chapters that provide students with definitions, comments, examples, and exercises about natural deduction...

This cornucopia of math and logic problems is provided at no charge courtesy of the folks at BarCodes Inc. Designed to serve as a type of one-stop destination for those who love such activities, the site serves as a thoughtfully curated collection that deals with math in the real world, logic puzzles, and much more. Visitors will find four different thematic areas, including Math and Logic...

Tau Beta Pi is a national honor society for engineering students, and its quarterly Brain Ticklers online feature is a true challenge aimed at motivated individuals. In each issue, five standard questions and two bonus questions are given, which are intended to exercise peoples' problem solving skills. The problems are generally straightforward and easy to understand, but they can be extremely...

For those who believe the Web fosters only barely mindful surfing, we offer the following site as counterargument. The Fallacy Files, mentioned in Critical Thinking on the Web's Top Ten and authored by a former teacher of college logic, features virtually exhaustive descriptions with examples and counterexamples of logical fallacies. The fallacies are readily accessible through an alphabetical...