Pamungkas O. Pengembangan Android Mobile Learning “Puzzle Of Chemistry” Berbasis Contextual Learning Pada Materi Asam Basa. JTCRE [Internet]. 2020 Oct. 31 [cited 2025 Feb. 3];2(2):83-90. Available from: https://ejournal.uin-suka.ac.id/tarbiyah/jtcre/article/view/22-04