If you want your students interested try giving them collaborative learning instead of cooperative learning. By allowing them to use collaborative learning it makes them responsible for their own work and it is led by them and is more natural that way.
Cooperative Learning Group Labels- this activity/printable sheet of paper can help students manage their time and become cooperative and effective team members in a group setting. Each student has a role in the group.
Four Corners: A Cooperative Learning Strategy (Post 4 of 5