THEPHAVONGSA, S. . Enhancing the Teaching Skills of the Multi-Grade Teachers through Lesson Study. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 17, n. 4, p. 71–87, 2018. Disponível em: https://www.ijlter.myres.net/index.php/ijlter/article/view/684. Acesso em: 28 may. 2026.