Analysis of students' errors in solving mathematical problems based on high-level mathematical thinking skills on the topic of geometric transformations
Siregar, B H, Hasratuddin, Hasratuddin, Mulyono, Mulyono
The development of student worksheets based on the case method to improve the competence of prospective teachers in creating constructivism-based learning media
Siregar, B H, Kairuddin, Mansyur, A