This paper reports on classroom research done in a college freshmen intermediate-level English course for engineering majors, the research question being "How can students learn not to copy and paste information from others&”39; writing?" The author formed a hypothesis and designed class activities to explore it, using news video from CNN Student News. However, the class activities in the first half of the semester did not support the hypothesis. In the middle of the semester, a second hypothesis was formed that learning about fundamental differences between Japanese and Western cultures might help Japanese students understand the importance of clarifying the source of information in English. After a lecture and class activities, the number of students who copied and pasted decreased to half. For those who still needed to be encouraged to distinguish others writing from their own, activities were presented focusing on phrases to introduce information from others. With the help of these phrases, all of the students could write without copying and pasting at the end of the semester.
