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- arXiv.org open access to e-prints in physics, mathematics, computer science, quantitative biology, quantitative finance and statistics.
- Fract-ED Math tutorial for beginning college level students.
- MAA Online: Classroom Capsules and Notes A part of The Mathematical Association of America's website, this page provides free access to undergraduate-level classroom materials in a variety of mathematical topics.
- Math Archives Links to software, teaching materials, topics in mathematics, and more.
- Professor Freedman's Math Help Contains materials for community college algebra students.