1) http://www.agendaweb.org/exercises/verbs/irregular-past-1.htm
2) http://www.agendaweb.org/exercises/verbs/simple-past-irregular-2
3) http://www.englishexercises.org/makeagame/viewgame.asp?id=2562
This is a blog of exercises for my students at CEIP Gabriel Janer Manila (5th and 6th year of Primary Education), to practise grammar and vocabulary