A friend gave me an old teacher's book that had a great illustration for explaining the second birth to children. I made the illustration out of doubled sided poster board. I experimented until I found 2 different plate sizes to trace the concentric circles. I used a yardstick to draw the lines to divide the 2 circles into thirds.
To teach the concept of the new birth, I stressed that for a child to be physically born, it takes 2 people, a mother and a father. We did not go into any details, it wasn't necessary.
Then I put the second set of circles up on the white board and told them not only are we born physically, but we can all be born spiritually as well. I told them it would also take two people to be born spiritually and I asked them if they had any idea who those 2 people would be. Amazingly they figured it out. Then I explained how when we are forgiven of our sin through Jesus, the Holy Spirit can enter into us and this creates the second birth, the spiritual birth.
It would be good to either felt the pieces and use them on a flannel graph or adhere magnetic strips on the back and use on a magnetic white board or any metal board. I didn't have time for that, so I just used pieces of blue tack and attached them to the back of the visuals as I placed them on a white board (non-magnetic).
Check out the video below to see the visual in action.
How to Explain the Spiritual Birth to Kids from Joan Eppehimer on Vimeo.