Jak to vlastně je?
Učitel matematiky, Tome 22 (2014) no. 4, pp. 243-252.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

In our textbooks the proof of the volume of the pyramid is erroneous. The solution of this problem is demonstrated in connection to our school practice.
Classification : 97D99
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Vlk, Václav. Jak to vlastně je?. Učitel matematiky, Tome 22 (2014) no. 4, pp. 243-252. http://geodesic.mathdoc.fr/item/UM_2014__22_4_a4/