This study aimed to examine the interactive effect of multimedia and formative assessment on promoting Iranian intermediate EFL learners’ pragmatic fluency. To this aim, 80 male high school students in grade eleventh from Andimeshk, Khuzestan, Iran were selected. Then, the selected participants were divided into four equal groups of 20 and a pre-test of pragmatic fluency was administered to them. After that, the control group was taught via traditional method. The first experimental group was exposed to presenting the instructional materials b using multimedia with summative assessment, the second experimental group was exposed to multimedia using formative assessment and the third experimental group received the treatment through conventional approach with formative assessment. At the end of the treatment, the participants were given a teacher-made post-test of pragmatic fluency. The analysis of the results showed that the experimental groups outperformed the control group on the post-test. The results suggest that teachers should be aware of their suitable methods for teaching their learners and they should teach their students based on methods and strategies to enhance their learning and motivation.
