While originating as ideas for a confirmation class, I've also used these Sessions as an introduction to Church Membership. Along with these lessons I refer to:
Basics of the Christian Faith - Made Easy Rose Publishing
The Bible Made Easy for Kids (Dave Strehler) Christian Art Kids
I also recommend (on the historical side) the Channing Bete Booklets:
• “About Being Presbyterian”
• “History of the Presbyterian Church”
Sessions