My advice to you would be to #l. Look at what I wrote under the subject of the leaven parable. #2. Decide weather you believe that that’s what Jesus’ was taking about or not. Then take ownership of the matter and teach it as though you ascribe to it yourself.
The parables of the Kingdom are intertwined and they all lead back to each other. I’d meditate on these things until I have the idea down, then you can teach these things with their intended end in mind.
I don’t think it hurts to SUBMIT things. Allowing people to decide for themselves. As long as you’re stressing the analogies that Jesus used vs. the interpretations, you’ll perk people’s interest. Heck, you might even learn some things from the kids. Just make sure that you OFFER these things instead of stuffing them down someone’s throat and I think you’ll be all right. I think children can understand metaphors better than adults because their imaginations are allowed to wander more.
It might also be good to seize upon this idea of Jesus revealing “things that have been kept secret from the foundations of the earth”, maybe asking, “What on earth do you think he could be saying”? “What might these secrets be”? “Should we know and understand them”?
Also, you may want to convey the importance of this scripture (Mark chapter four) because Jesus asked, “you don’t understand this parable? “Then how will you understand ALL parables concerning the kingdom of God”?
Good luck with the kids. God bless!