He used this analogy: He's a horrible speller. Say there is this one particular word that he knows he always misspells. He can continue to just misspell it. He can continue to bear the consequences of misspelling that word, say points off on his essays. Or, he can pick up the dictionary and look the word up and check his spelling. He's been taught to use the dictionary. It is a skill that is helpful to him. It is a skill that, if used, will allow him to not have to suffer the consequences of repeatedly misspelling the same word over and over. AND, as an added bonus, after he has looked the word up several times using the skills he has been taught, eventually, he won't even need to use the dictionary because with practice, he will have learned to spell the word correctly automatically.