teachers should be aware, particularly of that aspect, i think, because phonic method is very often used in schools, by which i mean that the teacher wil hold up a flash card, and on it would be a pair of letters, say, suppose for example sh the teacher will hold up a large card with sh on it and will say to the class ‘this is shuss’ and the children will all say shuss whenever this card is held up — that's fine, but the dyslexic pupil may not be seeing sh in the same way that the other children are.