Evaluating Content Validity of an Instrument to Assess Teachers’ Practice of Differentiated Instruction (IATPDI) . Bhutan Journal of Research and Development, [S. l.], v. 10, n. 2, 2021. DOI: 10.17102/bjrd.rub.10.2.006. Disponível em: https://www.bjrd.com.bt/index.php/bjrd/article/view/102. Acesso em: 11 jun. 2026.