Easily enlarge font size

[fred-kite]

It would be useful if you could enlarge fonts natively. Basically I'm a teacher and I need to project a text editor on a white board. What interests me about Docs is that it is free from the constraints of page margins etc but I find the default font size too small for the students at the back of the classroom. Enlarging font size seems feasible but I'm no coder. Thank you.