DS is six, reasonably intelligent - he is around average in most things, perhaps a bit above in maths. I know he has a phonics test this term and I'm pretty unconcerned but I've noticed he is struggling to read longer words - not the sounding out but the putting together of sounds. Eg if he read the word 'exploding' he would guess it first based on some of the letters - he might say 'excited' or plodding'. Then when I get him to sound it out he'll get the sounds right 'ex-pl-o-d-ing' and when I ask him put it together he'll say something like explodderating, ie he'll add in extra sounds etc. Is this fairly common? Is it just a case of practicing or is there anything else I can do to help him? TIA!