- Mission: Critical - http://www.sjsu.edu/depts/itl/
- Interactive tutorial for critical thinking.
- The Daily Translation - http://www.univnorthco.edu/philosophy/trans.html
- Problems on translation into a logical system, drawn from the current news and updated daily.
- Logic Software from CSLI - http://www-csli.stanford.edu/hp/
- Hyperproof, Tarski's World, Turing's World, and The Language of First-order Logic, educational logic software by Jon Barwise and John Etchemendy
- Games Mathematicians Play - http://www.math.usf.edu/~mccolm/rgintro.html
- Mathematical games from a logical point of view: strategies for games and using games in descriptive complexity.
- Infinity - http://www.c-parr.freeserve.co.uk/hcp/infinity.htm
- Exploring the logical basis and practical meaning of infinite sets.
- University of Alberta Logic Course - http://ugweb.cs.ualberta.ca/~c272/
- Includes an introduction to logic and formal systems, revolving around the Mizar proof checker, and a guide to Mizar.
- The Logic Classroom - http://www.sjsu.edu/faculty/carranza/
- A course in basic logic consisting of 5 studies with exercises and answers to promote the learning of logic. Homeschool, college, and seminary students.
- Around Gödel's Theorem - http://www.ltn.lv/~podnieks/
- (Hyper)textbook for students in mathematical logic, by Karlis Podnieks.
- Gödel's Theorem and Information - http://www.cs.auckland.ac.nz/cdmtcs/chaitin/georgia.html
- G.J.Chaitin's proof of Gödel's theorem using arguments having an algorithmic information theory flavor.
- The Logic Daemon - http://logic.tamu.edu/
- On-line proof checker, and texts.
- Formal Methods Educational Materials - http://www.cs.indiana.edu/formal-methods-education/
- A repository for information related to formal methods in education, including pointers to existing courses and suggestions for examples and projects.
- Logic Tutorial - http://logictutorial.com/
- An interactive tool teaching basic formal logic, rendering truth tables as clickable Johnston diagrams. With notes on the Buddhist Nagarjuna and modern symbolic logic.
- The Logic Cafe - http://www.oakland.edu/phil/cafe/
- An online textbook, courseware package, and homework assistant for introductory symbolic logic. Includes multimedia support.
- Disjunction - http://plato.stanford.edu/entries/disjunction/
- Theory and history of the binary connective 'or'; from the Stanford Encyclopedia of Philosophy by Ray Jennings.
- A Problem Course in Mathematical Logic; by Stefan Bilaniuk - http://euclid.trentu.ca/math/sb/pcml/
- Volume I: Propositional and First-Order Logic. Volume II: Computability and Incompleteness.
- Logical Laws - http://sakharov.net/logic.html
- This page includes a collection of logical laws of the first-order logic. This collection is based on the Kleene's collection from his books 'Introduction to Metamathematics' and 'Mathematical Logic' and includes a few additions.
- Course on Description Logics - http://www.inf.unibz.it/~franconi/dl/course/
- Slides and notes by Enrico Franconi.
- ASL Committee on Logic Education - http://www.ucalgary.ca/philosophy/asl-cle/
- Reports and resources from the Association of Symbolic Logic.
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