First, you would take two of the same shape and size containers and pour the same amount into each one. You then would ask the child to identify which has more water and would most likely get a response with them saying the same amount is in both. The next part of the activity would be pouring one container into a different shape container and ask which would have more water. Although the containers would still have the same amount, the height different in the containers would differ due to sizes and shapes. The child would see the different amounts and height difference in the container perceive that as being a greater amount of water although it is the same.
The third stage of Piaget’s stages of cognitive development is the Concrete Operational stage. This usually involves children 7 through 11 years old. Children at this point of development start to think more realistically, but their thinking can also be very rigid. They tend to struggle with nonconcrete and hypothetical concepts. At this point, children become less selfish and start thinking about how people might think or feel. Children in the Concrete Operational stage also begin to comprehend that their thoughts are unique to them and that everyone does not share the same feelings or thoughts (The 4