Abstract:
The purposes of this study were: 1) to analyze and classify the Thai pronouncing problems of the Akha primary school students in Chiang Rai Province, 2) to construct and figure out the effectiveness of multimedia computer-based innovation, as well as 3) to investigate the students' satisfactions towards their implementation. For research methodology, the three major tools used for analyzing and classifying the Thai pronouncing problems, creating and evaluating the effectiveness of multimedia computer-based innovation, as well as investigating the students' satisfactions were all conducted with 125 Akha primary level 1-3 students testified during the academic year 2015, and 48 Akha primary level 1-3 students used for try-outs held in the academic year 2016, at Barn Therd Thai School, Tambol Therd Thai, Amphor Mae Fa Luang, Chiang Rai Province. Also, the data were statistically analyzed using frequency distribution, percentage, mean, standard deviation, and t-test. The findings of the study were detailed as follows: 1) In terms of the Thai pronouncing problems of the Akha primary level students in Chiang Rai Province, the initial consonant sounds --/s/,1x7, and /L; final consonant sounds-/m//n//d/y,/w/jy/p/,t,/k//y/,and/b/ diphthongs--!pur/,/pl/,phr/phl/kr,/kl/kw/,khr/,khl/khw/, ond /tr/;the single vowel sounds-/ui//uu/,/i//iil/,/ao/, and /o; the combined vowel sounds-/e/,/ual/,/e//ial/,/ual,/o/, and /aw/, as well as thee tonal accent of /t5/ well mostly mispronounced. In addition, the Thai listening problems found in the Akha primary school students' mispronunciation in Chiang Rai Province showed that the single initial consonant of /I/ was mostly mispronounced, meanwhile the diphthongs of khw/, and /phr/ were mostly mispronounced. Besides, the final consonant of it/ was mostly mispronounced, and the vowels - il/, and fi:/ were mostly mispronounced. Also, the tonal accents - /tv.t2,t3//t4, and /t5/ were mostly mispronounced; 2) The students' learning achievements obtained from their posttest with 263 points was higher than that of their pretest; moreover, this innovation with its E1 and E2 showed that the constructed innovation with its scores of 82.92/80.83 was higher than that of the standards of 80/80 provided. As the students' learning achievements with its mean of 16.17 obtained from their post-implementation were higher than that of their pre-implementation with its mean of 5.48, and were significantly different at 0.01, and 3) In terms of the students' sattisfactions, it also showed that the male students' satisfactions towards their implementation of multimedia computer-based innovation were higher at 25 percent than that of the female students' satisfactions, mean while their overall satisfactions towards their implementation of multimedia computer-based innovation, with its mean (X) of 4.52, were rated at a highest level.