Time has no meaning

Today I had to flip my language arts classes and my social studies classes in order to fit into the computer lab schedule. It was amazing to watch the reaction of the kids. They just could not understand it. My 2nd period class thought they were having 2 periods of language arts followed by 2 periods of social studies. What they thought the other class was going to be doing all day is a mystery. 3rd period always begins with 20 minutes of SSR. So when that class came into language arts, which is normally social studies they could not figure out why we were having SSR. There seemed to be no understanding that 3rd period is actually 20 minutes longer for SSR every single day. It had nothing to do with social studies. It was all quite amazing. I am astounded at how little observation of the world happens in the mind of a 6th grader. I tend to gloss over a lot, thinking they know what's going on. I really do need to tell them about the details of life.