Applying some techniques to teach how to learn Vocabulary of English effectively at Bim Son upper secondary school Applying some techniques to teach how to learn Vocabulary of English effectively at Bim Son upper secondary school Vu Thi Thanh Nhan Bim Son upper secondary school 1 Part A INTRODUCTION 1 Reasons for choosing the research Vocabulary represents one of most important skills necessary for teaching and learning a foreign language It is the basis for the development of all the other skil[.]