Abstract The research. Aims to design and develop teaching materials to repair, strengthen science-based courses kaenklang 2551 (2008) high school 1 year phityakhom, Nong WUA so, high efficiency of over 80/80 the criteria to find E2 and E1/compare performance achievement. School of medical students before and after school, with teaching materials developed by using. A single group trials and tests before-after The results showed that the effectiveness of teaching and learning materials are developed, 81.11 81.42/value criterion defined the 80/80 and. The official school of the student's achievement after school with teaching and learning materials developed. There are over before fee study with statistical significance level at .05 level that can bring teaching and learning materials developed in the study. In science, the repair properly.
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