Abstract
This study aimed to investigate the effect of using the visible thinking approach on developing persuasive writing organization skills. Participants of the study were 30 pupils chosen randomly from first grade prep at Sawada Preparatory School during the first term of the 2023-2024 academic year. They represented the study experimental group which was instructed through using the visible thinking-based activities. The researcher's instruments included a checklist, a rubric and a pre/post persuasive writing organization test. Participants were taught through using some relevant visible thinking activities designed by the researcher that included "generate-sort-connect-elaborate; concept maps and headlines". Participants' scores on the pre and posttest were statistically analyzed using T- test and effect size. Results of the study revealed the positive effect of using visible thinking activities on enhancing first year preparatory pupils' persuasive writing organization skills. That's why the visible thinking approach is recommended to be applied to various instructional situations.