Pratiwi, Tuty, Rusdy Siroj, and Muslimin M. 2018. “THE DEVELOPMENT OF THE STUDENT ACTIVITY SHEET-BASED PROBLEM-SOLVING METHODS ON THE MATERIAL OF THE TRIANGLE”. JOURNAL of MATHEMATICS SCIENCE and EDUCATION 1 (1), 67-86. https://doi.org/https://doi.org/10.31540/jmse.v1i1.135.