BIBLIOGRAFĂ?A
http://difundiendolahistoria.blogspot.com/2008/11/la-importancia-de-la-enseanzade-la_30.html http://www.educacontic.es/blog/lineas-del-tiempo-interactivas-en-el-aula-con-dipity http://geeksroom.com/2009/12/spaaze/10107/#ixzz1QIkFUymf http://www.spaaze.com/board/60fc0e50947a46c7a63d14baa76774ea