Promoting children's number sense. Proceeding of the 25th conference of the International Group pf the Psychology of Mathematics Education. 2001. 1. 395
子どもの10の理解に関する調査. 年会論文集. 2001. 25. 361-362
Promoting children's number sense. Proceeding of the 25th conference of the International Group pf the Psychology of Mathematics Education. 2001. 1. 395