Lifelong Learning Programme

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Title of the Experience
Divisions between polynomials and Ruffini's rule
Name of the teacher
Massimo Amato
Country where it took place
School typology
High Secondary School
Thematic Area
Experience typology
Teaching in class
Type of contact
Description of the Experience
During the study of the decomposition it comes to the need to perform polynomial division (also required the reduction of equations of degree higher than the second). This argument, even if a pure technicality, is always difficult, because recalls the divisions made in elementary school and requires a minimum of attention and logic.
One way that was effective was to recall the numerical divisions using spread sheets into pc and then, gradually, complicating the situation by adding parameters until you reach the degree of difficulty required.
This process will be resumed even when it is necessary to factor the equations of degree higher than the second and verify the result directly on the spread sheet into pc. The pc helps to "see" the solutions without having to accounts, that are a distraction of the real purpose of explanation.
Subsequently, even if I have a very antipathy against this rule, I use this procedure to explain and resolve the reduction and lowering of the degree of the equations through Ruffini's rule, which is easy because it only if it's worth it purely mnemonic effort, but does not understand what is being done and why it is carried out.

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Dissemination Seminar in Florence

31 October 2015 The seminar has been held in ITIS “A. Meucci” one of the schools involved within Goerudio project activities. Its main aim was to promote the results of the project toward a broad sample of stakeholders even overcrossing the number of people directly involved in the production of project outcomes. This purpose has been totally achieved especially thanks to the participation of students and teachers coming from different schools or from other classes instead of those ones directly involved within the project activities.