فهرست نشریات علمی دسترسی آزاد ایران

Established on the basis of Vygotsky's SCT, this study tends to document the EFL students' development of phrasal verbs through two SCT-oriented approaches including concept-based instruction (CBI) and dynamic assessment (DA). Moreover, the students' performance in the follow-up stage is explored to see whether they experience a conceptual development in a new context. Participants were 45 pre-intermediate and intermediate high school students who were randomly assigned into two experimental groups and one control group. The study followed a mixed-methods procedure employing both experimental design and qualitative case study. To examine the appropriateness of the instruments and tasks, initially a pilot study was run in a one- to- one tutoring session. Subsequently, all groups were asked to go through the pretest followed by 10 sessions of instruction and posttest. Finally, DA and DA-CBI groups participated in a follow-up stage. ANOVA results on posttest showed the significant influence of integrating DA and CBI as a joint function on EFL students' conceptual development over the traditional control group, F (2, 42) = 14.27, p= .000