Language Teaching Research Quarterly

This study tried to investigate the effect of using Computer Assisted Language Learning (CALL) on the achievement of Iranian students in learning grammar. The sample of the study consisted of 80 students distributed randomly on two experimental and two control groups. The instruments of the study were an instructional on-line program for teaching Conjunctions (coordinating, correlative and Transitional) and an achievement test. The findings of the study revealed that there were statistically significant differences between the students' achievement scores in grammar due to the instructional method of teaching. This difference was in favor of the students in the experimental group. There were also statistically significant differences between the students' achievement mean scores in grammar based on gender. Results showed that female learners outperformed male learners in the post test in both control and the experimental group. According to the findings of this study, it is recommended that teachers use CALL lessons in their instruction.