A Comparison of Achievement in Pronunciation of Diphthongs by Using Exercises of Mathayomsuksa 3 Students at Nongbua School

Abstract

The purpose of this research was to compare the achievement in reading aloud in diphthongs of mathayomsuksa 3 students by using exercises of diphthongs consonants “r” “l” and “w” before and after learning. The samples were 41 mathayomsuksa 3 students at Nongbua School. The research instruments comprised the exercises of diphthongs consonants “r” “l” and “w”, the pre-test, and the post-test (30 items). The experiment was conducted in the 2nd semester of the academic year 2019 from November 11, 2019, to November 29, 2019, an hour per day, a total of 15 hours. The data obtained were analyzed with/by the applications of mean, standard deviation, and percentage. The results of this research showed that the scores before using the exercises of diphthongs consonants “r” “l” and “w” of mathayomsuksa 3 students were 50.3 percent and the scores after using the exercises was 83.3 percent. It could be seen that the average score after using the exercises was higher than the average score using the exercises.