The zone of proximal development is a developmental stage in which a child cannot carry out difficult or tedious tasks or skill on his or her own but can be done through guidance or by been assisted.
It is the difference between what the child can do without help and what he can't do with help.
Therefore the child has to be guided or help by his parents or older siblings who are more knowledgeable than him.
We should carry out our development,Because if we want to developed our society and country.we have only use the resources only when we need it,if we over it is not good for our future generation.