First day of class and in course annoucments talk about communication, resources, and open office policy. Stuent need to know about communication so they are very aware of the missing work and help that 10% to better communicate so help them get out of that 10%. Well informed students will get them motaviated to doing good. 

In our program extrinsic motivation is what brings people in but we have to find the intrinsic motivation in order to succeed.