Rahmawati DU, Jumadi J, Ramadan EM. Developing Physics Learning Tools of Blended Learning Using Schoology with Problem-Based Learning Model. jpppf [Internet]. 2020 Dec. 31 [cited 2024 Nov. 14];6(2):139-52. Available from: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/15440