Rohmah, F., Eko Pramono, S. and Yusuf, A. (2020) “Problem Based Learning Assisted by Mobile Learning to Improve Conceptual Understanding of Primary School Students”, Educational Management, 9(1), pp. 51-58. Available at: https://journal.unnes.ac.id/sju/eduman/article/view/37145 (Accessed: 1May2024).