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File:Learning model based on the studies of Jean Piaget and Lev Vygotsky Distinct ways for gain knowledge, negative scenario.png - Wikimedia Commons
![Studies in Cognitive Development: Essays in Honor of Jean Piaget: ELKIND, David and John H. Flavell (Editors): 9780196318189: Amazon.com: Books Studies in Cognitive Development: Essays in Honor of Jean Piaget: ELKIND, David and John H. Flavell (Editors): 9780196318189: Amazon.com: Books](https://m.media-amazon.com/images/I/41Em8LBsHpL._AC_UF1000,1000_QL80_.jpg)
Studies in Cognitive Development: Essays in Honor of Jean Piaget: ELKIND, David and John H. Flavell (Editors): 9780196318189: Amazon.com: Books
![Linda Liukas on Twitter: "I knew there was a reason Jean Piaget is my thinker hero. (My office on it's best days is roughly 60% this. Room to grow. ) https://t.co/sFnwdizIrp" / Linda Liukas on Twitter: "I knew there was a reason Jean Piaget is my thinker hero. (My office on it's best days is roughly 60% this. Room to grow. ) https://t.co/sFnwdizIrp" /](https://pbs.twimg.com/media/EHpffQMWoAApJd2.jpg)