The Development of English Correction Software for Teaching Correct Pronumciation to Pupils in A Primary School at Nhong Mae Na School, Nhong Mae Na, Khao Kho, Phetchabun Jeerapan Phomprasert1, Siriwan Polset2, Suchat Khewnok3 [แหล่งตีพิมพ์ : The 10th International Conference of HUSCO Network on “Dynamics of Humanities and Social Science in Cross-Border Societies” 2 – 3 กุมภาพันธ์ 2560]