This document summarizes a study that investigated the effectiveness of a computer-supported cooperative learning strategy called Jigsaw II on physics performance and attitudes of senior secondary school students in Nigeria. 80 students were assigned to either a Jigsaw II group or an individual computer instruction control group. Results showed that students in the Jigsaw II group performed better on a physics achievement test than those in the individual instruction group. Students in the Jigsaw II group also reported more positive attitudes towards physics. However, gender was found to have no influence on performance. The study concluded that using computer-supported cooperative learning strategies like Jigsaw II can improve students' learning and attitudes in physics classes.