My little boy who has just turned 2 is number mad. He can recognise written numbers from 0 - 100+ and can count beyond 100. He points out numbers EVERYWHERE - on speed signs, doors and even things that look like numbers but aren't - (a "9" in the swiss roll today). It's amazing but a little concerning. He took an interest about 6 months ago when he started playing with a box with lots of little numbered boxes within it, and he was off! I thought this obsession might fade but it hasn't. I don't want to discourage but I'm also concerned about encouraging too much as well. Socially he's OK. He's an only child and I'm a lone parent and he doesn't go to nursery or anything. I'm a little concerned that he's too engrossed in his number world. Any thoughts or advice would be appreciated.