Look for a visual prop. Perhaps plant some seeds in a pot of soil, then ask "where are my flowers?" Let them tell you you need to wait.
Ask them about waiting for things: Christmas, their birthdays, the school bus... (again, let them tell you what they wait for. Children's time is more fun if you let them speak!)
Then talk about waiting for things we pray for. Peace. Good health. All these things take time and patience. Just because we don't see results right away, doesn't mean "nothing's happening." We also have to do our part. WE have to plant, water, and nurture the plant, in order for it to grow.
Also, you might want to consult an alternate paraphrase. This is from THE MESSAGE by Eugene Peterson:
"That's why I don't think there's any comparison between the present hard times and the coming good times. The created world itself can hardly wait for what's coming next. Everything in creation is being more or less held back. God reins it in until both creation and all the creatures are ready and can be released at the same moment into the glorious times ahead. Meanwhile, the joyful anticipation deepens.
"All around us we observe a pregnant creation. The difficult times of pain throughout the world are simply birth pangs. But it's not only around us; it's within us. The Spirit of God is arousing us within. We're also feeling the birth pangs. These sterile and barren bodies of ours are yearning for full deliverance. That is why waiting does not diminish us, any more than waiting diminishes a pregnant mother. We are enlarged in the waiting. We, of course, don't see what is enlarging us. But the longer we wait, the larger we become, and the more joyful our expectancy."
You might want to ask your priest what he/she is going to focus on. Generally speaking, Romans is too theological for most kids to understand. Heck, it's often too theological for
me!Be sure to let us know how it goes - and bless you for volunteering to help out! O8)