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?
It's very, very advanced for a five year old, especially if he figured it out for himself.
He's probably going to be ready for multiplication soon (he's essentially thinking about how division of 2 works). That might be something where a little bit of guidance would really help him out.
Good luck. You've got a smart one there.
JB
