My DS who is 3 amazed me this weekend by knowing the number bonds to ten. I have played the ping pong game (where I say a number and DC says the relevant number bond to ten) with my older DC so maybe he's picked it up from that but that is a while back.
He seems to love this kind of stuff and I wonder if there are fun activities I can do to expand his knowledge. Not in a hot housing kind of way but he tells me himself that he likes 'work' and 'School games'..
Any good maths resources for Pre-schoolers? Ideally physical rather than apps.