http://www.xtec.cat/ceip-jverdaguer-ssadurni/concurs/concursple/activitatmates.htm
http://www.xtec.cat/ceip-jverdaguer-ssadurni/concurs/concursple/index.htm
http://www.multiplication.com/interactive_games2.htm
http://www.genmagic.net/educa/
http://www.omerique.net/polavide/rec_polavide0708/recursos_propios_varios.html