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Abstract

This quasi-experimental study aimed: 1) to develop and determine the efficiency of the instructional packages on the past tenses for grade 11 students based on the criterion set at 75/75; 2) to compare the students' learning achievement before and after learning through instructional packages of English writing on the past tenses for grade 11 students; and 3) to survey the satisfaction of grade 11 students with the instructional packages. The samples in this study were twenty-six grade 11 students who took fundamental English course (E32102) in the second semester of academic year 2010 at Thantongpittayakhom School, Lamplaimat District, Buriram Province, selected by simple random sampling technique. The research instruments were instructional packages, lesson plans, an achievement test, an observation form, and a questionnaire. The statistics used to analyze the data were percentage, mean, standard deviation, and dependent samples t-test. The findings of this study were as follows: 1) The efficiency of instructional packages of English writing on the past tenses was 79.53/76.08 which was higher than the criterion set at 75/75; 2) The average post-test score of the students who learned the past tenses through the instructional packages was significantly higher than that of the pre-test score at the .01 level; and 3) The average level of the students’ satisfactions with instructional packages was very high