O. Vaskovska and O. Shkolnyi, “ON THE USE OF THE METHOD OF EXPEDIENT PROBLEMS TO ACTIVATE STUDENTS’ COGNITIVE ACTIVITY IN THE PROCESS OF TEACHING MATHEMATICS IN THE NEW UKRAINIAN SCHOOL”, ФМО, vol. 39, no. 1, pp. 7–13, Feb. 2024, doi: 10.31110/fmo2024.v39i1-01.