Learning phonics enables the reader to make the connection between symbols (letters) and their sounds (short vowel sounds, long vowel sounds, consonant sounds). It is important to teach the client how to break words into syllables in order to decide which sound he or she should give for the vowels in words. Breaking the word 'begin' into the two syllables 'be-gin' gives the 'e' the long sounds because it is an open syllable. Otherwise, the word would be read 'beg-in' because the first syllable would be closed and require the short vowel sound for the 'e'. With an unfamiliar word, the client must sometimes try both ways until they 'hear' a real word. In addition, students need to learn the multiple sounds for vowel teams. For example, 'ea' can be read as the long e sound in 'read' or the short sound of 'e' in 'bread'. Phonics is thought by some people to be quite simple, but you can see that it is fairly complicated and needs to be taught in a very systematic, organized way.
Using multi sensory methods such as Orton-Gillingham or Wilson Reading Programs is very effective for dyslexic students or just students with reading challenges.