Jean Piaget | Biography, Theory, & Facts | Britannica
Referentinnen: Evelyn und Sous - ppt video online herunterladen
Piaget's cognitive development theory
Strukturgenetische Theorien I: Piaget - ppt video online herunterladen
693142 The more we try to improve our schools, the heavier the teaching task becomes; and the better our teaching methods the more difficult they are to apply. | Jean Piaget quote,