Abstract
The purpose of this study is to determine the use of Cognitive Research Trust (CoRT) Program to teach expository writing for primary Year 6 students. The participants of this study comprised of 25 students who have acquired basic language skills, however they struggle to write good essays as they do not know the techniques to elaborate ideas. The data of this mix-mode study were collected through tests (Pre-test and Post-test) and interview. The test results showed that the mean score of the Post-Test was significantly higher than the mean score of the Pre-Test. The findings from the interview showed that the participants had positive response towards this intervention and it was a helpful tool to improve their writing skill. The findings strongly suggested that CoRT program could be a useful technique in assisting the teaching and learning process of writing skills.