Being a moron in math is forgiveable, but not asking questions when you are not sure how to do something can lead to big mistakes and problems. Assertiveness is a virtue in nursing. No one is going to think you are a moron if you admit you don't know how to do something --- especially if it means the difference between the patient receiving the right and wrong dose of medication. Talk to your teachers and get a tutor. Practice until you feel comfortable, but never be afraid to ask questions. New nurses who don't ask questions can be scary!