Lots to look at here! This site isn't an example of up-to-the-minute programming or a reflection of recent web technologies, but it's got a lot of good, sound content that would keep a student busy for a long time. Some parts of the site invite visitors to "Meet the Ologist," and most sections have some kind of interactive game. It has some nice, low-tech features that I quite like; for example, in some of the sections, you can download PDFs with cute imagery on them, fill in your name and address in the blanks provided, and print them as personalized stationary.

People who join Ology can create their own homepages, and if they collect all the Ology cards, they can also create their own little interactive  quiz questions. Quiz creators can submit their questions to the Hall of Fame, and AMNH staff will judge which ones win. The language is perky and engaging, and there are also lots of hands-on activities (check out Rubber Blubber Gloves in the Marine Biology section). A great many resources for teachers.