text: 1/2+1/3=2/5 why is this not true?   http://www.math.com this site provides a variety of resources related to math education.  the site is broken into sections: cool tools, which provides online tools such as calculators, graphers, equation solvers, and converters.  there are also sections for test preparations, study tips, as well as a section that is aimed at interesting students in the study of math called “wonders of math.”  there is also online math tutoring available for both students and teachers.