Recently the effectivity of a experience–based learning system using virtual reality technologies have been suggested. In this study an approach which multiple students shared one virtual experimental environment experiencing operations with force feedback was considered. Particularly the system which enabled two students to learn about the principle of leverage and the equilibrium of force in a virtual laboratory was developed. We analyzed protocols of experimental participants who used the experience–based system. Then we found they shared a learning environment in pairs, conducted experiments and repeated proposing and talking with them. In addition, we got the experiment data which indicated the possibility of understanding phenomenon in the laboratory by sense of weight intuitively as an effect of force feedback.
