  We present the results of an experience of teaching updating dispensed to
Italian high-school physics teachers to promote the application of the
Cooperative Problem Solving method as an useful strategy to improve physics
learning at high-school level and to foster the development of problem solving
skills. Beside analysing the method and discussing the ways to propose and
apply it in a high-school context, the teachers experienced the method acting
both as learners and as tutors of student group learners. Students and teachers
evaluated as positive the experience, mainly focusing on cooperation within the
group by information exchange and the application of a solution scheme. The
ex-post analysis of the students' performance in applying the method to solve
some rich context text showed the need of improving critical sense with respect
to achieved results to fully exploit the strategy and develop their problem
solving skills. Finally, an analysis on gender differences and scholar
distribution of students is presented.
