Help each other in learning

a young child is learning together and teaching each other. seen from the faces of those who are very happy when able to share knowledge and help each other when one of them no one knows.
a young child learns together and teaches one another. seen from the faces of very happy people when they can share their knowledge and help each other when one of them is not a child who learns together and teaches one another. viewed from the faces of those who are very happy to share their knowledge and help each other when one of them no one knows