The first step in maintaining a cooperative class is to make sure the students know the behavior expectations. We have 5 simple guidelines for being a "Star Student" in music. We display the rules on our whiteboards and teach the students a chant with motions to help them remember the expectations.
When a student breaks a rule by doing something like blurting, we simply state the rule with the motion as it is performed during the chant. The student typically grins as if to say, "Oops!" and the behavior improves.
Here is a class performing the Star Student Chant:
These are the Star Student visuals we keep on our whiteboards:
I found the clip art by searching Google. The clip art is licensed from the Clip Art Gallery on DiscoverySchool.com.
If you would like a PDF of our 8 1/2 x 11 visuals, you can download it for free:
If you would like to create your own customized posters, you can use the resources listed above to create similar visuals.
I hope these ideas help you develop star students in your classroom!