<p>An easy way to block all internet distractions would be to turn off your router for a certain time – say from 7:00 pm to 9:00 pm. Of course, that affects the whole household, and also prevents the kids from accessing sites they might need to complete homework – like the teacher’s web page where the assignment is posted!</p>
<p>We took the same approach as monydad. Didn’t block anything, and let (hoped?) the kids developed some self-control.</p>