Philosophy Pages
Philosophy Pages: Categorical Syllogisms
Provides a detailed look at syllogisms. Sections include the following: "The Structure of Syllogism," "Standard Form," "Form and Validity," and "Diagramming Syllogisms."
Cut the Knot
Cut the Knot!: Mathematics: The Science of Patterns
A book excerpt, this page discusses John Venn's "simple, geometric method for checking the validity of syllogisms," with diagrams, examples, and related links.
Wikimedia
Wikipedia: George Boole
This site from Wikipedia provides an in-depth look at the life, accomplishments, and ideas of mathematician George Boole. It discusses his publications on mathematics and logics, has information on his analogy between the symbols of...
Other
Aristotle & Logic: Syllogisms & Inductive Reasoning
From a larger college website, this page provides a good description of syllogisms as well as inductive reasoning.
Other
Motif Plays Backgammon: A Game of Strategy
A very challenging game of strategy and skill from Backgammon Galore. The student plays backgammon against a computer program. Included is a page on instructions so the student can learn the game.