How much time is too much screen time?

While celebrating Christmas, I reflected on what it means to be a parent in this ever-changing world.

Computers were a fairly new thing when I was a child and having a single family computer was exciting. Now many households have smartphones and tablets far more powerful than computers from even five years ago. The question of what type of screen time and how much, including TV, gaming systems, computers, iPads, and more can be a question that may weigh heavily on parents minds. The real question for myself is how do I teach my children that screen time is best in moderation?

I have alway...