This study examined the effects of PowerPoint presentation on sophomore university students' performance and attitudes. The participants from intact classes were randomly assigned into experimental and control groups; the experimental group was instructed via PowerPoint presentations along with the textbook in simple prose texts whereas the control group was taught only through the textbook. The results of an independent sample t-test demonstrated that the experimental group outperformed the control group in terms of their post-test scores. Besides, these students had strong positive attitudes towards the use of PowerPoint in the course.