Why did Henry put his backpack on his desk like a wall? In the book of wonder​

The other students' in Auggie's homeroom kept their distance from him. the one student, Henry, placed his backpack on the desks between them to "build a wall." the students were not welcoming towards Auggie. Auggie is able to cover his face with a mask, in order to feel like every other kid.

Explanation:

so practically he wanted to be like the other kids so he did what they did

- the heat nearly killed them that first summer.