A previous study (Seidou, 2010) showed that teaching high school students only the structure of an argumentative essay was only somewhat effective in improving the quality of their essays. Therefore, the present study examined effects of high school students’ interactions on their argumentative essays, in addition to teaching them text structure. Participants in the study were high school juniors. In the first intervention, the interaction group (
n=29) was given a handout in which their ideas were written, and the text structure group (
n=28), a handout in which the text structure was written, after which the students wrote argumentative essays. The quality of the content of the essays improved equally in both groups. In the second intervention, after the same 57 students were all given handouts in which both their ideas and the text structure were written, the essays written by the students in the text structure group were higher quality than those written by the students in the interaction group. Posttest essays written by the students in both groups were lower in quality than those written immediately after the interventions. However, the quality of the essays written by the students in the text structure group was higher than those written by the students in the interaction group. These results suggest that students’ interactions with the handouts, in addition to teaching them text structure, may have improved the quality of their argumentative essays. Teaching text structure before the interaction was more effective.
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