The Effect of WeChat-Based Online Instruction on EFL Learners’ Vocabulary Knowledge

During the COVID-19 pandemic, use of online instruction through different mobile applications has become more common in education all over world. Therefore, this research investigated potential effects using WeChat-based on Iranian EFL learners’ vocabulary knowledge. To achieve objective, 44 intermediate subjects were picked out among 67 students based findings Oxford Quick Placement Test (OQPT). The then randomly divided into two equal groups: experimental and control. After assigning to groups, they pretested by a test. Then, group received WeChat application, while control conventional instruction. instruction, posttest was given both groups assess effectiveness treatment. gathered data analyzed independent samples t-test, one-way ANCOVA, paired t-test. outcomes attained demonstrated that there significant difference between posttests favor group. Eventually, conclusions pedagogical implications study explicated.