Pengembangan Modul Ajar Matematika Fase D Kelas IX SMP Konten Pengukuran Untu…

This research was motivated by the loss of learning (loss of learning) during the Covid 19 pandemic. The loss of learning was due to the lack of optimal learning processes carried out in class so that students' skills decreased, including reasoning skills and mathematical proof. The need for teacher creativity to plan learning so that the quality of education increases, especially in the transf…