My children are a bit young for these studies (geared for ages 8-12), but I have heard great things about Precept’s studies for kids. Our church does them with the older kids during Wed. morning Bible study for the women. They are very meaty, not watered down, and there is a fair amount of work to do each week.
If the kids’ studies are anything like the adult studies there is plenty of narration built in the lessons. Their philosophy is that you will learn to discover what God’s Word says for yourself.
http://store.precept.org/c-32-discover-4-yourself-kids.aspx