Here is a slide from an English lesson.
What is the lesson about, and what are the situations the students are supposed to think about?

Hmmm, what is the lesson about?
The words have mostly been mangled to give you an idea of what a student who has difficulties processing text might get from this slide.
The student is trying to work out what the lesson is about. They know the lesson is English and they saw this picture in a previous lesson. They remember that that lesson was about Romeo and Juliet, and that this is a picture of Romeo and Juliet.
But, now they are struggling. The teacher is explaining, but they are not fully following.
They need to do a task. The student thinks the lesson might be about conflict or fighting or something. Perhaps the boxes to the left of the picture are about conflict situations? Maybe they need to talk to their neighbour about the situations? Maybe they need to talk about what they would do in those situations?
But, what are the situations?
What this shows
In many lessons we may use a picture to give the general context of what we are talking about. This is useful. However, it often won’t go very far to help those students who are having difficulty deciphering the text or what you are saying.
What we could do is add a few symbols to help students get some more of the meaning.
We will add symbols to each of the situations that are described in the boxes.

You should now be able to get a bit more of what the meaning of the phrases might be. You probably won’t fully understand, but you will have some understanding – which is far more than what you had without the symbols.
In the lesson, the teacher would have gone through each situation and drawn attention to the relevant symbols as they did so. This would have further increased this student’s understanding.