Since CPS is a framework for teaching problem solving and not a cur-riculum, it is relatively undemanding for instructors to implement into their teaching, and can be adapted by the instructor to fit his or her instructional style. It does not require any changes to the order in which physics topics are taught or the way in which concepts are introduced; rather, instructors follow a strategic approach when teaching problem solving. The teachers were provided with a large bank of problems with strategies and two-column solutions, which had been written and reviewed by the authors, and were free to pick problems that they wished to use to match their content coverage. T eachers were also free to use their own problems.