In 8th grade, the students take physical science. It's the end of the year, so it's time for the astronomy unit. The classes had questions dealing with the solar system.
As I made a circuit of the room, I noticed that one boy hadn't started working on his questions. At least he had his science notebook out, but it was open to a page with diagrams of atoms. I stood over him and I told him to get started. He needed to get out of the chemistry section and get to a page where he could do the assignment.
"This is my science notebook."
I told him I knew that. I needed him to open to a page in the astronomy section.
Again, he informed me that he had his science notebook. We did our "Who's on First" a couple more times before I realized what the problem was. His tablemates realized it at about the same time I did. First I had to shush them, as they weren't explaining things any better than I was. I searched for a way to explain.
"You are saying 'color' while I am saying 'blue'."
Finally, I got through to him. At my insistence, he flipped through his notebook and he found a different page. I stood over him to make sure he started writing something, and then I moved on to students who had questions about the assignment. (Questions that involved gravity. Cool!)
Later, I walked past his desk again. His notebook was still open...to the page with the atom diagrams. Sigh.