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Welcome!

Welcome to DUDEfree.com! This site has many resources I hope you find useful, entertaining, or informational. The main navigation menu is located above and will not change from page to page. Some pages may have links in addition to those shown above. Those links will appear within the content of the page and/or in the navigation box at the left.

People often ask me "WHAT KIND OF CALCULATOR SHOULD A HIGH SCHOOL STUDENT BUY?" I strongly recommend the TI-84 Plus or the TI-84 Plus Silver Edition. They are both very capable calculators that will serve students well for years to come. More advanced students may be well served by the TI-89 , but I strongly suggest checking with your teacher first to make sure you'll be allowed to use it in class and on exams (it has a computer algebra system that some teachers feel is not appropriate for some courses).

The site is always under construction, so check back often.

Feel free to send comments or questions to dude@dudefree.com

Be sure to check out my most popular page: Unit Circle Practice.