... first year EFL students at Vinh University, and Le Thi Bich Thuy (2006) carried out an action using CL with her second-year students at Gia Lai Teacher Training College These studies have proven ... Hanoi 23 Le Thi Bich Thuy (2006), An Action Research on the Application of Cooperative Learning to Teaching Speaking to the Second- year Students at the Department of English, Gia Lai Teachers’ Training ... Hong Thanh (2008), The Roles of Teachers in Implementing Educational Innovation: The Case of Implementing Cooperative Learning in Vietnam, Asian Social Science, (1), pp 3-9 25 Phi Thanh Tra...