Recently, I taught a multi-week study on the Exchanged Life. Our youth pastor's wife had been sharing her notes with him, and he asked if I would teach it to the jr/sr highs. I agreed to do it, hesitantly.
It has been 20 years since I worked with youth, and I was worried about crossing the age gap. I went in and told them, essentially, "We're going to see what the Bible says about this. I don't have videos or music to go with any of this, my overheads will be as "high tech" as we get. I won't talk down to you, and I'll try not to talk over your heads. If you have a question about anything, ask it, and if you're not comfortable doing that in the group, get with me later or write it down. I will answer every question as best I can. And, by the way, it might help if you take some notes."
They responded tremendously, lots of discussion, questions, asking for copies of the overheads. A couple of them studied on their own and really added a lot to the class. We are already planning to do a similar class on Praise and Worship this fall.
The best youth minister I ever knew was a grandmother in her 70's who loved "her kids", prayed for them and made herself available to listen to them. The kids for their part adored her. And you know, she didn't try to act like anything but the mature, godly woman that she was.
I say all that to say this, we do err if we assume kids don't want to learn the Word, or if we think they have to be entertained every minute. Clear and open communication goes a long way toward closing the age gap.