Last year we started The Bible The Basics by creative communications, 6 weeks just what the title says, learning what the Bible is, how it came to be, how to navigate, what is the overall story of OT and NT. We do this in 8th grade, and for 9th graders who have had no prior CCD. Pamphlets are a couple of bucks each, be sure to use a bible with good notes, we use NAB STudent Bible for Catholics (Nelson).
Loyola Press, who does our elementary text series, has new bible studies for teens. I have ordered them for review. I have used their adult bible studies in Confirmation classes - on Acts of the Apostles, and Discipleship in Letter of James and found them to be very reliable, and formatted so a facilitator who is not necessarily a scripture scholar can easily lead the study and discussion.
If your kids are in Catholic school they are probably better versed in the Bible than those we get for Confirmation who have not had any instruction since 2nd grade. Have you considered, since you only do this once a month, faith sharing with Sunday gospel? There are many resources for this, but all you really need is the missal, and to read it beforehand and have 2-3 questions you can pose if the discussion is slow to start. There are also resources for RCIA that focus on the Sunday scripture - from Ligouri for each cycle, about $10 each, you the facilitator read your section, use that to introduce the scripture, then let them discuss and share. Low cost solution if they have their own bibles or missals.
Our post-confirmation class spent the entire year on Our Father’s Plan by Hahn & Cavins, 3 videos plus study guide from Ignatius Press. they liked it so much they came for 3 extra weeks after CCD was over because they wanted to finish the whole program.
Our Sunday Visitor has just published Teen Guide to the Bible by Fr. McBride, a companion to his Teen Catechism, I just got a sample copy and it looks great. for your purposes, you could jump around and choose chapters to fit a theme, or go along with the lectionary.
