Le Thi Giao Chi, Luu Ngoc Bao Trang. IMPROVING ENGLISH SPEAKING SKILLS FOR MATH-MAJORED STUDENTS THROUGH EXTRA SPEAKING ACTIVITIES – A STUDY AT A HIGH SCHOOL FOR THE GIFTED IN VIETNAM. IJEPC [Internet]. 2024 Sep. 24 [cited 2025 May 17];8(50). Available from: https://gaexcellence.com/ijepc/article/view/3640