... multiply.To facilitate the English learners in Dien Bien Upper - Secondary School, I have chosenTeachers' Typical Difficulties in Teaching Vocabulary to Upper Secondary School Studentsof ... teachers were chosen for the study. Three of them are at Tran Can School, 2of them in Muong Luon School, 5 in Dien Bien District School, 2 in Dien Bien Boarding School, 3 in Thanh Chan School. Most ... teaching at Dien Bien Upper- Secondary Schools at the end of January 2008.To ensure that the participants fully understood the questions, the researcher distributed thequestionnaires at tea break,...