This sounds like a great session. The "electronic flannelgraph" analogy is fantastic.

I think that Drs. Ratcliff and Beckwith have a lot in common with Scottie May and his chapter in Perspectives on Children's Spiritual Formation (B & H). At least he quotes them both a good bit. I have a lot of affinity for that chapter (and there is lots to learn from the whole book). I bet that I would have enjoyed this presentation.