The Systemic Thinking in the passage from the arithmetic language to the algebraic language with use of mediator software Excel (in the children of 9-10 years)

The phrase "Systemic Thinking " stands for a way to interpret the reality, whose history is fairly recent, since it began developing in the postwar period. The first phase of its development begins in 1940 with the publication of the article Der Organismus als physikalisches System betrachtet di Ludwing von Bertalanffy Der Organismus, in which they face the importance of self-regulation of processes of negative retroaction, inside essentially closed systems. At first during this phase, experts of engineering and cybernetics, physicists, and neurobiologists work on projecting and building machines able to auto-regulate themselves, from which the first computers were born. Even if the main attention turns on the world of technology, some key ideas of the systematic thought also began to spread in other disciplinary fields. Thinking in terms of systems has different advantages: · It allows us to face complex problems with more consciousness, without getting into the technical details of the subject; · It discloses structures and behaviors at a high level of abstraction, completely independent from the specific field of investigation. Therefore, what we learn in one kind of system can then be applied to another, also very different: the mental picture of reference is the same, for biological, social, political, environmental..