Two major parts are included in this article. Firstly, it presents the story of a student teacher. In the story, he adjusts, modifies, and reconstructs his own instructional thoughts and strategies about elementary science continually. One of the major causes facilitating his adjustment, modification, and reconstruction is the he takes part in a team action research. So, the second section of this article discusses some issues concerned with team action research based on the story of that student teacher. To sum up, two purposes are included in this article. Firstly, it hopes another student teachers may reflect and improve their instruction under the revelation of the student teacher's story. Next, it expects that the discussion abut team action research could propose some helpful suggestions for those teachers who are interested in team action research.