My 4.5yr old DS is starting reception next week. He knows all letter sounds and can read any words made up of simple letter sounds. He seems keen to move on but needs to know the two letter sounds and tricky sounds (? not sure if terminology as all new to me). Wondering if I should show him or just wait for school to do it? Looking at the syllabus it seems like he might have to wait quite a while for this to be covered.