Maybe our confused little friend here doesn't understand that a teacher can, generally speaking, use any material they want to supplement the TEXTBOOK and the official CURRICULUM in almost any class. You could use the back of a cereal box if you could show how it supported a lesson plan. Most teachers have no time for extra crap given the schedule of REQUIRED MATERIAL and/or topics they have to get through in a given quarter.
It's funny you should say that.
I have a quick bell work where I show different images of cereal boxes on the board and the students have to analyze them and figure out what they all have in common. The answer is the mascots marketed toward children almost always look downwards. Then the students have to figure out why-the answer is because children are obviously shorter and the companies want the mascots to be looking directly at the children. We us this to help give them practice using OPTIC charts before we tackle more difficult content.