Short description of MathAid Precalculus 28.63: Interactive tutorials and self-test system for individual home schooling, computer learning centers, and distance learning. The product covers the standard topics of a high school course in Precalculus. Tutorials include the reviews of basic concepts, interactive examples, and standard problems with randomly generated parameters. The self-test system allows selecting topics and length for a test, saving test results, and getting the test review.