- http://www.genmagic.org/lengua3/oa1c.swf
- http://www.xtec.cat/~mfortun4/dibuamas.htm
- muds/matematiques/problemes_visuals/intro/index.htm
- http://multiplication.com/interactive_games.htm
- http://multiplication.com/flashgames/quickflash/flash/index.html
- http://www.xtec.cat/~jarderiu/quia/taules_multi/taules_bs.html
- http://genmagic.org/mates3/pr1c.swf
- http://www.edu365.cat/primaria/muds/matematiques/index.htm
