Our son starts secondary school September. When the older boys started (a long time ago) the school sold calculators which you could buy when they had an open evening so most of the kids had the same one. I guess this made it easier as the buttons would all be in same place etc. They've stopped doing this now so I know he needs one but will any do or does someone have a recommendation? I don't think he needs an all singing all dancing one just one that will do the syn/cos/tan thing?