***
Aimed at: everyone
Articles from the quarterly magazine are reproduced, alongside a compelling Philosophical Health Check and a few other intriguing games. Features tend to be short and might therefore make good starting-points for class discussion at A-level.
**
Aimed at: everyone
An impressive, but as yet uncompleted, resource that grows slowly as members of the editorial board approve its content. As you might expect, the bibliographical entries and cross-referencing are unimpeachable.
***
Aimed at: children
Produced by a US university, this site is a brief but extensively cross-referenced guide to the lives and thought of Socrates, Plato and Aristotle.
***
Aimed at: everyone
Not all the articles collected here tackle philosophical subjects, but those that do are up-to-date and a useful survey of contemporary philosophical debate.
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Aimed at: everyone
The proprietor of Zeno's sets regular challenges of the mathematical kind that anyone can enter. The front page also links to an interactive prisoner's dilemma game.
***
Aimed at: teachers
An extraordinary number of annotated links. Many will be more suitable for undergraduates and academics than A-level students, but there is plenty to occupy anyone with an interest; particularly useful are the lists of newsgroups and philosophers' addresses.
****
Aimed at: everyone
Although this site is intended for classics pupils, it provides an engaging introduction to the lives and thought of some key Greek and Roman thinkers, so it will be invaluable if you want to introduce a class to a particular philosopher before tackling his ideas.
****
Aimed at: everyone
An excellent introduction to constructing logical arguments, together with an intriguing list of common fallacies.
***
Aimed at: everyone
Submit an argument to the clinic and have it criticised by staff at the University of Northern Colorado.
****
Aimed at: (in practice) teachers
To know how a Garfield cartoon can convey conversational implications, look here. The cartoons would make a good primary source for lessons.
****
Aimed at: everyone
An excellent selection of resources from different parts of the web.
****
Aimed at: everyone
A concise, though slightly dry, introduction to key thinkers and concepts.
You can find more philosophy sites at: www.educationunlimited.co.uk/netclass or contact Ros Taylor at ros.taylor@theguardian.com
