This research is provided for: (1) to develop a skills subject: diphthongs grade 4-6 efficiency (2) to study and compare the achievement before class and after studying the language instructional Thailand issues a diphthongs grade 4-6 using the skill training. Target in this research as a student grade 4-6 school home Lup PHO. Tambol talad vultures. Amphoe ban khwao, Chaiyaphum The number of 25 people.
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