Nguyen Thanh Hai, Nguyen Hai Nam and Quach Nguyen Bao Nguyen (2018) “TEACHING AND LEARNING PHYSICS IN THE ORIENTATION OF COMPETENCE DEVELOPMENT IN SECONDARY SCHOOLS - DIFFICULTIES, CHALLENGES AND VIEWS ON SOLUTIONS”, UED Journal of Social Sciences, Humanities and Education, 8(3B), pp. 26-33. doi: 10.47393/jshe.v8i3B.719.