The journal pages make intensive, though effective, use of browser frames. Free registration, though not currently required, will be necessary to access special services in the future. The Chemicool Periodic Table, provided by a student at MIT, is a simple yet elegant site that allows users to click on their element of choice, or type in its name or symbol. The Electronic Medical Journals page is part of the Royal Netherlands Academy of Arts and Sciences' Medical Information Centre, a large medical resource site. The Electronic Journals page contains links to approximately 55 freely accessible scientific and biomedical electronic journals.
Most journals offer full-text web versions of articles previously published in printed form.
Exercises are available at three levels of difficulty in fifteen subject areas ranging from absolute value and distance to polynomials and roots. In addition to the exercises, there is an explanation of each topic. Solutions are provided for all exercises, and, for more advanced exercises, hints are available as well. At present seven additional topics contain explanations but not exercises. This site is an effective resource foradvanced high school math students preparing for college classes.