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beginning in infancy, the acquisition of intelligence, conscious thought, and problem-solving abilities. An orderly sequence in the increase of knowledge derived from sensori-motor activity has been empirically demonstrated by Piaget.
kognitiivne areng . Haridussõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//har/kognitiivne%20areng/1/est (03.08.2026)
