A child who has not mastered the Piagetian concept of conservation:
◦ will not grasp that it is important to save their allowance.
◦ will waste paper products because they don't understand the rate at which wood is being used up.
◦ is deceived by changes in appearance even though the quantity remains unchanged.
◦ will realize that the amount of clay remains the same whether it is in a lump or squashed out flat.