How can I disable replacements for [Rule], [GreaterEqual], [LessEqual], etc. in the front part?

When you write -> at the front end, it is automatically replaced with the [Rule] character. Similarly, when you write <=, is automatically replaced with [LessEqual]Y >= it is replaced with [GreaterEqual].

Is it possible to disable these replacements? Occasionally I run a tutorial for students who are completely new to Mathematica, where I show sample code on a screen and have to write it on their own machines and then modify it to do certain things. Occasionally, students will be confused when they see special characters such as [Rule] on my screen, and I don't know what they should write -> instead. It would be useful if I could disable this automatic replacement on my screen to avoid such confusion.