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An educational application derived from the socialconstructivism view based largely on the theories ofVygotsky (1962, 1978) and Piaget (1926), was tried inorder to improve cognitive development of childrenstudying in a heterogeneous class. A path analysisbased on the study of 1017 pupils, 8- to 11-year-olds,studying in 36 classrooms, shows that complex learningtechniques are related to cognitive development,especially of lower level children. The processrequires that the teacher take a developer roleencouraging the students to interact verbally in orderto solve the learning tasks. The improvement seems tobe based entirely on the students' on-task verbalinteraction, but that was instigated by the developerteacher's role and impeded by supervisory role. 相似文献
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