the effect of video-based instruction on students cognitive learning

background: video-based instruction has been stated as an effective method of teaching and its potentials have encouraged instructors and learners to opt this method.purpose: the current study has compared  the students cognitive learning in the two approaches oflecturebased and videobased teaching.methods: this quasi-experimental study was conducted on 88 senior nursing students who were randomly assigned into two groups based on their average score. one group attended a lecture accompanied  by slides and the other viewed a video presentation.results: with video presentation, the students achieved better results compared to the lecture method. the students were mostly satisfied with video instruction (75.6%) and they were willing to continue with this method (66.7%). conclusion video-based  instruction is an effective method for improving students cognitive learning.key words:  video-based  instruction, students cognitive  learning.