Hi Fran,
Right you are in terms of needing to repeat and rephrase course expectations for students. When we hear something we do three things with the information, delete because it we feel it doesn't apply to us right now, distort it because we want to translate the information into a form we are comfortable with, or personalize it because it has meaning and application to our lives. By sharing the information repeatedly the students will start to make the information personal and then they will settle into completing the the assignments or activities.
Gary