On the didactic transposition of the notion of equipossibility


Koji Otaki, Hokkaido University of Education


In this seminar, I would like to share with you some results of my ongoing didactic and epistemological study of probabilistic knowledge at school in Japan. Especially, this talk will be devoted to inquiring into questions relating to the notion of equipossibility, which implicitly appears through the expression “equally likely” or “equally possible” on school textbooks. Where did it come from? For what? Why is it what it is? In my view, the transpositive analysis of this notion provides us with a brief illustration on the complexity of the phenomenon of didactic transposition. And then, it can also give a good evidence for proving that knowledge to be taught is generally not a rough copy or a weaker variation of its scholarly counterpart but a (para-)didactic product.