"The numbers are written on the screen."
Translation:המספרים נכתבים על המסך.
I know that there is a small explanation of this in the tips/notes but I'm having trouble understanding. What is the difference between this sentence and the similar sentence in a different lesson: המילים כתובות על הקיר ?
Is it that this sentence suggests that the numbers are currently being written on the screen?
Yes. המילים כתובות על הקיר means they were written at some point and they are still written; המילים נכתבות על הקיר suggests that they're being written at the moment.