sentences:  At first she may simply be trying to reach the object, but the mother's response of passing the object helps the infant realize that the action of pointing is a tool to change the environment according to her needs.It is from these simple inter-subjective beginnings that the world of meaning in the child mediated by tools and signs, including language, develops.A fundamental premise of Vygotsky's therefore, is that tools and signs are first and foremost shared between individuals in society and only then can they be internalized by individuals developing in the society as is reflected in this famous quote