This manual presents lectures on the course "Theories, technologies and practices of didactic systems". The material is presented taking into account the main topical ideas and directions of didactics and pedagogy. The manual is intended for students and postgraduates studying pedagogy, teachers and all those interested in current problems and issues of didactics and pedagogy. I express my sincere gratitude to the families of Galimov, Ivanov, Pavlov, Smirnov, and Uraev for their assistance in preparing this manual. Special thanks to V.F. Tropin, dean of the Karelian State Pedagogical Academy, and A.A. Talikh, teacher.