The manual is devoted to the creation of a content-methodical line of tasks with parameters in the course of a comprehensive school. Methods are proposed that establish general methods for solving problems with parameters, specific examples given for mastering the corresponding methods, prepared for use in the practice of the work of mathematics teachers. The manual is intended for teachers who want to create a methodological base for solving problems with parameters. The task material contains more than 600 tasks and can be used by schoolchildren for self-training.