Andika Y. PENGEMBANGAN E-MODULE INTERAKTIF BERBASIS PROBLEM BASED LEARNING PADA MATERI KUBUS DAN BALOK KELAS VIII SMP. JPM [Internet]. 2019 Mar. 4 [cited 2024 May 3];3(1):31-6. Available from: https://riset.unisma.ac.id/index.php/jpm/article/view/2608