With an aim to improve the translation skills of the second-degree English major students at Hanoi Open University, the Classroom Action Research was done with the use of Student Teams-Achievement Divisions (STAD) technique. 24 Students in class were divided into six groups. The Classroom Action Research consisted of two cycles. The data collected were all the results of the pretests, the post-tests, observation sheets and the worksheets. The research revealed that in the pre-test the average grades were not good enough (58,33). The average grades of the whole class in the post-test of the first cycle were a little better (66,46). There were not many changes in the grade level. In the cycle 2, the average grades of the post- test were better with (77,96). The Student Teams-Achievement Divisions (STAD) technique proved that it was effective for teaching translation skills. The research helps enrich the background for translation methodologies and for the practice of the translation skills.