Parents with mathematically challenged teenagers about to face the Scholastic Aptitude Test (SAT) can now enroll their children in an affordable, on-line SAT mathematics program designed to help students develop a mastery of the concepts needed to pass the math portion of the SAT. The innovative program is getting rave reviews from students, parents, and academics alike.

XLMath.com, the outgrowth of years of research and development, offers students the means to not only reinforce their understanding of key math concepts, more importantly, it offers students having difficulties with math the means to identify and overcome their mathematical shortcomings.

While traditional math prep courses offer students a series of multiple choice questions that enable them to test their knowledge of key mathematical concepts, XLMath prompts students to revisit each and every concept until it is mastered.

Here is a simple example. Prompted to provide the next number in the following series: 4, 7, 11, 16, the student is given five possible choices: A. 21, B. 22, C. 23, D. 24, and E. 25. The correct answer as described in the detailed solution strategy is 22. If the student answers incorrectly, he/she is then asked a slightly modified version of the question, e.g., provide the next number in the series 3, 8, 16, 23 along with a new set of answer choices.

The site provides over 10,000 problem permutations, allowing students to repeat a virtually unlimited number of variations of the same problem so they can eventually overcome their "blind spots". Visitors to the site are invited see the interactive system in action before they enroll.

As the individual student works through XLMath, the site