Chicchi di riso, fotografati in Cambogia. Come si potrebbe stimare quanti sono?
Tre rondini. Sullo stesso filo se ne possono vedere anche di più.
These 6 pieces can be rebuilt in order to form a parallelepiped with edges 3,4,7: a non-ve...
Un quadrato magico a Barcellona (Spagna), sul muro esterno della Sagrada Familia di Gaudì...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in ...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in pia...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in ...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in ...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in pia...
One of the ten signposts of the MIC project "Maths in the city". This one is placed in pi...
