In order to improve the understanding for an exercise problem, it is important to grasp the relations between the problem and the other ones. Several learning methods where students change the original problem into other problems have already proposed as promising ones to promote the problem understanding. The approaches, however, do not include any concrete ways to create feedback for students concerning the problem changes. The problem change for learning is a personal activity that strongly needs personal assistance depending on each student’s behavior. Based on these considerations, we have designed and developed an interactive environment for learning by problem-change. In this paper, evaluation of the learning environment through an experimental use for two weeks (two hundred and twenty-five minutes totally) by seven subjects is also described.
