“…On the other hand, these tools sometimes can be complex to use, and to facilitate the understanding in PE many researchers developed simulations tools specifically for PE, in order to illustrate the contents in an interactive, attractive and easy way. Furthermore, this environment can easily incorporate the latest hypermedia technologies (interactive simulations, videos/sounds, and databases, remote controlled instruments) to compose and to manage educational courses, virtual laboratories and virtual classrooms [12][13][14][15].…”