This video represents Piaget's cognitive development theory. A teacher places the same number of coins in two rows one under another and asked which row has more coins? Child said that they are same. Later teacher asked the same question by changing the places of coin, then child said they are not same in number. Teacher performed same activity with other things. He was not able to make complex abstract thoughts but as teacher does not told the child he was wrong, his confidence increases and thus conversation is developed.