The article looks at teaching students how to find the sum of the first n members of arithmetic progression. Using different approaches to solving a problem can stimulate and stimulate students’ interest in solving a problem. Working on their own will have a positive impact on their development. Students need to be taught how to solve problems in two or more ways. There is a special technique that can be used to influence students’ decisions quickly and efficiently. By using this approach, we can develop our students’ memory, comprehensiveness, and logic. Here are some examples of finding the sum of the first n members of an arithmetic progression by a non-standard method. Special methods can be used by school students, young teachers, and math teachers.