Although FLIP learning has been used as an effective face-to-face and online learning pedagogy, there is a scarcity of research on students' English speaking skill using FLIP learning in these two modalities. Therefore, this study set out to investigate the effect of face-to-face vs. online FLIP learning on the speaking skill of lower-intermediate Iranian university EFL learners. The study was quasi-experimental with 32 participants (18 female and 14 male) whose homogeneity in terms of language proficiency at lower-intermediate level was assured through the administration of Oxford Placement Test. Then, the participants were randomly assigned to two experimental groups, both of which took the pretest and posttest of speaking. One group participated in face-to-face FLIP classroom and the other one took part in online FLIP context using Adobe Connect. The findings revealed that using FLIP learning significantly improved the speaking skill of the two groups since the participants of both groups performed more successfully on the post-test as compered to the pre-test. The findings also indicated that the face-to-face FLIP learning participants outperformed the online FLIP learning participants. This means that using face-to-face FLIP learning in which the students had face-to-face interactions had a positive effect on their speaking skill more effectively.
