These may be worth looking at. Consider using English terminology about computers.

Computer vocabulary Glossary
Internet vocabulary
ICt classroom management tips


1. Remember always to check the status bar on students' laptops. There is where you can tell how may windows they have opened.

2. Not sure whether a student is browing facebook , messenger or elsewhere unwanted ? Check the historial for the lesson anytime or tell students that at the end of the lesson you will check some historiales at random

3. Remember always to have your browser at Full Screen.