The Impact of Heterogeneity and Homogeneity on Oral Performance through Cooperative Interaction Activity: A Case of Iraqi EFL Intermediate Learners. مجلة ديالى للبحوث الانسانية, Iraq, v. 2, n. 103, p. 343–352, 2025. DOI: 10.57592/hz5zca13. Disponível em: https://djhr.uodiyala.edu.iq/index.php/DJHR2022/article/view/4997. Acesso em: 9 2025.