Concrete applications  Learning mathematics often suffers from a theory that is difficult to grasp. The transposition into concrete situations is very often beneficial in assimilating concepts that are often delicate for the pupils. Obviously, these transpositions in concrete situations can be done in a classic way with objects and situations of everyday life. But technology offers real...

I often hear people say, "You see Rolex everywhere" or "Everyone wears a Rolex" and in a way, maybe that is true, but can't the same be said of Porsche? ? Both brands unwittingly exhibit this similarity, but does it discredit their products or values? In my eyes, no. I remember once a friend asked me why I had chosen to buy a Rolex. The answer certainly varies from person to person, but for me,...