Hi everyone.

I posted not so long ago about the trouble I was having with my five year old ds. Well things have really gone down hill from there. We are now on the summer holidays and I am finding it impossible to keep him entertained.

Well today in the car we had the following conversation.

ds, "Is zero a friend or not a friend?

Me, " I don't know what you mean?"

ds, "Well, Eleven isn't a friend, neither are one, three, five seven, nine or thirteen. Two, four, six, ten and twelve are friends. So are minus two, minus four, minus six and so on. So if minus one, three, five and them aren't friends then what is zero?"

Me, "How did you work that one out?"

Ds, "I just see them and know it. If there are two, four or six then that is like two friends and they can share, but if there are one, three or five then that is one spare and they can't share. So is two a friend or not?"

Me, " I have no idea."

What I think he is talking about is odd and even numbers. Is this possible for him to work out by himself? About six months ago he worked out minus numbers. How odd is this or is it normal for a not quite five year old?

I may be way off track, but it did freak me out a bit.

Oh, and does anyone know if zero is a friend(even) or is it not a friend(odd)?