As an adult, it's interesting to see how important it is to not get lost in debates or trivia (there are exceptions, of course). To stay on course and stick with the important issue of the conversation is vital. If we get off on a tangent, then that's all they remember. That's not always bad but it's not what I want out of the situation.
I guess the bottom line is to pray beforehand, do my best and let the conversation take its course. I can't force learning - no one can. God knows my kids' hearts and knows what they can handle and when. I am just the go-between - from the Bible in my hands to my kids' hearts and minds. It's a scary place to be until I remember that God is in control, not me. What a relief!