"Ministry to children" is what takes place in Children's Church. Leaders are deliberate in their efforts to teach children how to include God in their whole life experience. Their mission is to teach children ages 6 thru 12 the fundamentals of worship, lead them into a meaningful, personal relationship with Jesus Christ, and guide them in nurturing and developing that relationship.
"Train up a child in the way he should go; and when he is old, he will not depart from it." Proverbs 22:6