I was confused like yourself and I complete the first and second section of the the 11 and I typed 22 pages. Please don't make the same mistake you can do the exercises but you do not have to submit them as they will not be marked. I went to Thornley Tafe today and met with Wendy as I was having problems with Ecampus and I was confused as to whether we had to do the activities. She advised me as long as you understand the content you can go on to the assessments. However I am actually working in a HR environment which does help.
I hope this answers your question