The study was aimed at developing the 4 MAT lesson plans with an efficiency criterion of 80/80. Efforts were made to study the effectiveness index of 4 MAT lesson plans, students' learning achievement after learning using 4 MAT lesson plans, and students' satisfaction after learning using 4 MAT lesson plans. The participants comprised of 22 Prathomsuksa 3 students from Wat Nongsue School, Chachoengsao Province, Thailand. Students had learned about addition, subtraction, multiplication, and division combined for a total of 18 hours. The research instruments used in this study consisted of 4 MAT lesson plans, a mathematics achievement test, which was including of 30 items with 4 multiple choices, and a questionnaire on students' satisfaction towards 4 MAT learning activities, which was including of 15 items on a Likert scale. The data were statistically analyzed by percentage, mean, and standard deviation. The research hypothesis was tested by using a t-test. The findings of this study were as follows: the efficiency of 4 MAT lesson plans was 87.19/83.63, which was higher than that of the criterion 80/80. The effectiveness index of 4 MAT lesson plans was found to be 0.77. The students' learning achievement after using 4 MAT lesson plans was statistically significant, which was higher than that before using lesson plans at the level 0.05. The students' satisfactions towards the 4 MAT learning activities were at the highest level. The results indicated that 4 MAT learning activities could be used effectively in order to enhance student's mathematics achievement on several topics.
Charuwan Singmuang, Rajabhat Rajanagarindra University, Thailand
Stream: Social Sciences
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