We designed and implemented the building, its rooms, and some details from scratch, but most of the more complex artifacts, such as the operating table, anesthesia machine, and other similar equipment were purchased at the SL marketplace. The negative side of purchasing items created by others is that some minor conflicting details may follow. For instance, the patient bed on wheel was supposed to imitate the transportation of patients from the ward or sluice to the operating room. We purchased the only bed with that function available at that time on the SL marketplace. However, it was an ‘emergency bed’, with an integrated animation of blood infusion into the patient. This last detail would not be correct in the situations given in the scenarios, and the students were instructed to ignore such details. Nine avatars were required in order to play the proposed scenarios. The resultant nursing avatars had pale green or white clothing. All patient avatars were required to wear a plain patient gown with a front opening