Textbook focus: introductory course on the application of methods of symbolic algebra and computer symbolic calculations in continuum mechanics. The main purpose: the basic computer textbook on continuous mechanics is intended for university students and students of technical specialties of universities, in which continuum mechanics is the basic discipline of special courses. Practical feature: more than 350 problems solved by symbolic algebra methods in various branches of continuum mechanics. Computer Codes: More than 1,000 computer codes for solving problems in Mathematica.