Resources are user-submitted pieces of content that range from video presentations to publications to simulation tools.
Anyone can submit a resource! Resources must be relevant to the community and may undergo a short approval process to ensure all appropriate files and information are included.
An animation is a Flash-based demo or short movie that illustrates some concept.
A combination of presentations, tools, assignments, etc. geared toward teaching a specific concept.
An online presentation is a Flash-based voiced lecture, seminar, or presentation of some sort.
A publication is a paper relevant to the community that has been published in some manner.
Supplementary materials (study notes, guides, etc.) that don't quite fit into any of the other categories.