As per my previous question on answer keys -- I received this reply: "If you are logged in to TTO, you should have access to the answer keys. If you are not logged in (or if the system bumped you out after a period of inactivity), you will need to log back in."  I am aware that I need to be logged in and I am, but the  resources is blank when it comes to most of what should be there. One time might be an anomaly but I try multiple times a day to avail. Is there some place that these are kept other than under RESOURCES -- Most of what I need is unavailable. Even in this discussion thread, Science 3 is not available as a choice for discussion.