Using a primary school text is a great idea. You can learn English from children oriented websites such as: http://www.nick.com/games/games_list.jhtml http://www.noggin.com/ http://www.noggin.com/games http://www.bigfishgames.com/

Try those http://worldsdown.net/q1prk/english+speaking+book+for+kids.html

Dark Panther meets Big Bird :P

why you don't use the primary text books,the conversation units in these books are very easy.

i don't have book for kids you can find english videos for kids on youtube it may help