According to Piaget, children make a number of important cognitive advances during the Concrete Operational Stage during the Middle Childhood years.
(1) From the advances described on page 203 (conservation, classification, seriation, or transitivity), please describe the advance that you think is the most significant during this period and explain WHY you think it is important. Please be as specific as you can. (Feel free to look up more information on these advances if the description in the text is not completely clear to you.)
(2) Provide a SPECIFIC example of how this advancement would lead you to interact with a middle child differently than you would with a younger child who has not yet developed that ability.