I highly recommend going over those modules as well as all the other modules. Having passed the PMP on my first try, I can say that all of the modules are critical and give a basic overview to get you started. Studying in great detail a PMP prep book that Cornelius recommends as well as PM Simulator really helped me. Best wishes and good luck.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®