TY  - BOOK
AU  - Hans Freudenthal
TI  - Mathematics as an educational task
SN  - 9027702357
U1  - 510.7 F889m 
PY  - 1973///
CY  - Dordrecht-Holland
PB  -  Reidel. 
KW  - Mathematics --  --
KW  - Study and teaching. Mathématiques
KW  - Étude et enseignement. Wiskunde
N2  - Putting them in the front of the book is a feeble reflection of what, in the style of mathe- matics treatises and textbooks, I usually call thf didactical inversion: to be fit to print, the way to the result should be the inverse of the order in which it was found;  Read less
ER  -