Just curious, I have just turned 4 year old boy who knows about 90% of lower case letters by sight, there's only really Q and N he doesn't know. He is pretty good with numbers too. But shows absolutely no interest in learning to write letters he seems a long way off being able to write his name and won't even really draw a recognisable picture, just mark making squiggles. Am starting to think he may be just getting the idea of 'reading' three and four letter words like cat, dog etc, he seems to be figuring out how to put the three sounds together c-a-t. Does all of this sound age appropriate? I know all kids develop differently but wondering if he is slightly behind average with the mark marking?