This is partly because the split between school level economics and higher level is acute in the subject itself. In particular mathematical economics does not appear a great deal in A-level syllabi, but is increasingly important in academia. Perhaps the most important of these new subjects is econometrics. This is a large and growing sector of economics, concerning the theory and practice of testing economic models using statistical data. Game concerns the analysis of strategy, and uses statistical theory to model types of uncertainty.
Decision theory uses mathematics and logic to analyse decision-making.
Finally Experimental economics, although not a large section of the academic discipline, is an interesting and growing part, and has a substantial presence on the web. To illustrate the kinds of resources we are collecting under these subjects are some descriptions of recent resources added to the catalogue. This is an example of a resource which may be extremely useful to students and lecturers, but which might not be catalogued, because it is the web version of undergraduate computer science lecture notes. However the content is just the same as would be for an undergraduate introductory game theory course - a detailed technical introduction to game theory. This is a freely downloadable piece of software that can be used for interactively demonstrating games such as the prisoner's dilemma.