Highly interactive tutorials and self-test system for individual e-learning, home schooling, college and high school computer learning centers, and distance learning. The product emphasizes on building problem-solving skills. 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. Topics covered: factors and multiples, fractions, mixed numbers, ratios and proportions, percent, exponents and radicals, operations with polynomials, factoring polynomials, roots of polynomial equations, rational expressions, solving linear equations, solving linear inequalities, solving equations involving absolute values, solving inequalities involving absolute values, the distance formula, the midpoint formula, slope of a line, equations of straight lines, functions and graphs, linear functions, systems of two linear equations in two variables, parallel lines, angles of a convex polygon, congruent triangles, quadrilaterals, similarity, right triangles, trigonometry, circles (arcs and angles), areas of plane figures, solids, sequences and series, counting principles, basic probability theorems, mean, median, mode. The demo version contains selected lessons from the full version. The demo is designed to demonstrate the functionality and all features of the product