Do you remember how to form the plural in English?:
http://www.cristinacabal.com/children/plurals.htmlFancy a quiz?
GAMES:
http://www.bbc.co.uk/skillswise/words/spelling/plurals/pluralrules/flash0.shtml
http://www.bbc.co.uk/skillswise/words/spelling/plurals/pluralrules/quiz.shtml
http://roythezebra.com/reading-games/singular-or-plural-1.html