| Chapter 9 Piaget's concrete operational stage (7-11 years): thought more logical, flexible, organized Conrete operations: internal rules Reversibility, addition, subtraction, multiplication, division, serial and hierarchical ordering Inductive logic: from own experience to general principle; concrete things Not good at deductive logic: start with general principle and predict outcome; more abstract Problem solving with balance and weights at different locations: depends on experience Rule I: preoperational rule: consider only one dimension Rule II: transitional rule: consider only one dimension except when same number on each side Rule III: concrete operations: take distance and weight into account, except when conflicting info Rule IV: understanding of actual formula Horizontal decalage: development within stages, probably due to experience Conservation of mass at 7, weight at 8, and volume after 11 |
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