DS will be 7 in a few weeks and is in year 2 at school. At the last couple of parents evenings his teacher has asked us to work with him on learning his number bonds to 10 so that he knows them off by heart but he just doesn't seem to be able to get them no matter what we try.
Homework this week was to practice these number bonds and to talk about how these help you add larger numbers to 20 (eg 17 and 3) and even bigger numbers to 100 (eg 30 and 70). It's all ended in tears 
We've tried singing the number bond song (9 and 1 are number bonds, 8 and 2 are friends etc), using his favourite Lego to work out the bonds, we've written them out, he used his fingers.... We've used cars in the past, we have a number line on the wall, he has a printed out, ruler sized one that we laminated - nothing seems to help.
I don't want to pressure him but we are getting to the point where this is starting to hold him back now. Does anyone have any other tips on how we can help him please?