We often use tools like dictionaries and grammars authoritatively (even in our creative writing), don't we? We say that a word 'means' something or that a certain grammatical point is 'right' only when used a certain way. Never mind that the dictionaries and grammars aren't always in agreement. There are additional reasons why we should not be submitting these resources authoritatively. To become a better thinker, an independent thinker, please consider a different explanation AND why grammars and dictionaries could pose a danger to your student's education.
Can Dictionaries and Grammars be Dangerous for Creative Writing?