I just read your post and I was thinking it was an old one someone's trawled up because you said summer holiday! But then I realised you were in Australia! LOL
How about taking him swimming? My much younger sister is 11 and she's perfectly happy sitting at home playing computer games. It's a lot of work to drag her out, but once she's out she enjoys swimming, sport in general, and visiting interesting places. She also likes drawing.
|