Something that we haven't covered before with this type of work was how to lay out the pieces in two's with the odd pieces sitting below (to the left) so I focused on that. Later I was checking my fave blogs & read this post from Jo and realised that I'd forgotten to mention the point - which is starting to recognise odd and even numbers. Okay, something for next time ;)
Here we were working together with some basic addition. I observed that he was confident with the lower numbers (like 'lets bring 2 over to the 3' for 2 + 3) but hesitated with the bigger numbers. So I took the time to show him all of the options there were for creating some of the bigger numbers like 9! 1+8 or 2+7 or 3+6 or 4+5 and he liked that.