Pengembangan Perangkat Pembelajaran Materi Bangun Ruang Sisi Datar Berbasis K…

This research is motivated by the importance of mathematical problem-solving skills for students. Problem-solving is one of the fundamental skills that students should possess; however, in reality, students' mathematical problem-solving skills are still considered low. This observation is drawn from various previous studies, interviews with mathematics teachers in several schools, and the resul…