The development of the concept of alive by preschoolers through a cognivive conflict teaching intervention

The aim of this research was the conceptual change and transformation of the intuitive conceptions of preschoolers concerning life through a cognitive—conflict teaching intervention. Young children use the criterion of movement to justify the classification of objects as living or non-living, that is classify plants as non-living because they are immobile and mobile non-alive objects as living. The concept of life includes many sub-concepts and movement is a secondary and not a universal characteristic of living organisms. The subjects of this research were chosen according to their replies concerning the classification of plants as non-living. Subjects of the experimental group received a teaching intervention aiming at the change of their conceptual context about life and focusing mainly at the dependence of an organism to its environment. In the teaching intervention we used the procedure of cognitive conflict through the juxtaposition of live organisms to dead ones and mobile simulations. Our results show that all the children of experimental group presented a conceptual change classifying the plant as alive and using explanations including the dependence on environment and other functions, increasing the number of criteria used for justification of the animal as living.