How to explain the Trinity to kids using an apple. :-)The peel is like God the Father, because He protects us. The flesh is like God the Son, because Jesus is God made flesh. The seeds are like the Holy Spirit because He helps us grow.
This is a really pretty image of the annunciation. The annunciation is where the Angel Gabriel comes down to Mary and tells her that the Holy Spirit will come upon her and she will conceive Jesus, the savior of the world.