Hidayah N, Farumananda F, Darma Putra N, Sugianto S. Problem Based Learning with Metakognitive Strategy to Improve Concept Understanding. JISE [Internet]. 8Apr.2019 [cited 21Dec.2024];8(1):43 -48. Available from: https://journal.unnes.ac.id/sju/jise/article/view/26567