MathOnline

Currently, if you type "online math tests" in Google, the result that appears at No.1 rank among 53 million other similar ones is a site developed by Prof. Elias Saab of the University of Missouri-Columbia. The website helps students prepare for math tests and competitions and is gaining popularity among students nationwide.

The Web site -- MathOnline ( http://mathonline.missouri.edu/) -- provides free tests students can use for practice or self-evaluation and that school officials can use to assess their students' readiness in mathematics. MathOnline provides interactive tests in high school geometry, algebra and trigonometry, as well as for placement in first-year calculus and college algebra.

Users can also select options to personalize tests by choosing the number of problems (from 5 to 75, in denominations of 5) and whether the questions are multiple choice or single-answer blanks. After students finish the tests, the site provides the correct answers with a detailed explanation of each problem. The site also has a database of problems large enough that students can take similar tests several times without repeating questions.