Hi Jennifer,
There are a couple of way you can approach breaking the material down into "bite" size chunks. First, think about how you were taught. How did your instructors break the material down for you? Review any old notes or materials you have from the courses you have taken. I think you will find there are many strategies that you can use from these courses.
The other is to look at graphic organizers and see how you might use them to break the course content down. Go through and highlight the must know information and then decide how you are going to present that information. Make notes about how effective your presentations are and how well your students do on the tests. You will quickly start to see where the effective parts and the areas that you need to provide different ways of selecting and presenting the material.
The key is to make sure that you are not presenting too much information so they shut down.
Give it a try and if you have any questions let me know and I will be glad to help you.
Gary