TYAS, Lis; HARJANA, Harjana; WAHYUNINGSIH, Daru. Need Analysis for the Development of STEM-PjBL Physics Teaching Materials to Improve Students’ Problem Solving Ability in the 21st Century. International Journal of English Literature and Social Sciences (IJELS), [S. l.], v. 6, n. 1, 2021. Disponível em: https://journal-repository.com/index.php/ijels/article/view/3235.. Acesso em: 22 jul. 2024.