Risultati della ricerca
Anno XXXII - n.4 - ottobre/dicembre 1999 Insegnare fisica per nuclei fondanti: un esempio riferito al concetto di spazio
The paper presents a study aimed at constructing a “physics for teaching”. The study concerns an analysis of the physical contents of spacetime theories carried out from the perspective of designing conceptual paths moving from classical mechanics to general relativity. An example of paths is presented and their main features are pointed out. […]
Anno XXXII - n.4 - ottobre/dicembre 1999 Il macroscopio:una versione didattica del microscopio a scansione di forza
We describe an home-made device simulating, at macroscopic level, the behavior of a scanning force microscope, that we suggest to use for didactic purposes aimed at clarify genesis and meaning of the electronic images, frequently found in textbooks. […]
Anno XXXII - n.4 - ottobre/dicembre 1999 Gli insegnanti “aiutano” gli studenti a rinforzare i preconcetti? Riflessioni sul modo di trattare la formazione di immagini per mezzo di lenti convergenti
A series of intruction situations related to image formation by converging lenses which show the way teachers may unwillingly, help to strengthen students’ pre-scientific structural schemata are analyzed. Very often, teachers make use of simplified sketches, stereotyped diagrams, or a somewhat inaccurate language which, […]
Anno XXXII - n.4 - ottobre/dicembre 1999 Moto di una bolla d’aria in un tubo d’acqua
An experiment made by some students of the “Liceo Scientifico” about the motion of an air bubble in a tube filled with water. What is the inclination of the tube for the highest speed of the bubble? […]
Anno XXXII - n.4 - ottobre/dicembre 1999 Da una lampadina alle proprietà elettriche del tungsteno:un tassello sperimentale per la didattica della fisica
Data obtained by simple measurements of the characteristics current-tension of an incandescent commercial bycicle lamp are analized to recognize the electrical transport properties of its tungsten filament, giving the opportunity to explore an important property of the metals in the classroom. […]
Anno XXXII - n.3 - luglio/settembre 1999 L’educazione alla conoscenza scientifica: un percorso che parte da lontano
This paper aims at clarifying what education in science may mean in the real context of classroom activities. In particular the meaning of education in physics will be illustrated by looking at the development of concepts and methods within a perspective of continuity in the teaching of science at the level of compulsory education, […]
Anno XXXII - n.3 - luglio/settembre 1999 Quando la termodinamica incontra la meccanica: bilanci energetici di oggetti in movimento
In the study of subjects at the borderline between Thermodynamics and Mechanics, typical aspects of one of the two sciences are sometimes overlooked and incomplete, contradictory or partially erroneous descriptions are given. We find this type of difficulty in situations where there are objects in motion and, […]