Search results for " Didattica."
showing 10 items of 881 documents
Open Inquiry Investigations on Heat Transfer Performed by Undergraduate Engineering Students
2012
Many researches have shown the pedagogical effectiveness of structured inquiry as a high performance tool in science education of undergraduate engineering students. In this paper we report the preliminary results of an extended investigation on the efficacy of the application of an open inquiry approach to the consolidation of the physics concepts regarding the topic of thermal energy transfer. We selected a sample of undergraduate mechanical engineering students, who passed the examination of the basic physics courses with good marks. Firstly, we investigated about resistant misconceptions in thermal physics by administrating a pre-activity questionnaire. Even the best marked students sho…
Tre esperimenti per un approccio unificante al fattore di Boltzmann
2010
La comprensione del fattore di Boltzmann, alla base della descrizione di molti sistemi naturali sia classici che quantistici, richiede una trattazione matematica raramente alla portata degli studenti dei primi anni dei corsi universitari ad indirizzo scientifico. Viene qui discusso un approccio didattico per la sua introduzione a studenti che si trovano ad affrontare, per la prima volta, lo studio della meccanica statistica. L’approccio si basa sull’analisi di tre semplici esperimenti, condotti utilizzando apparati sperimentali sia di tipo tradizionale che MBL (Microcomputer Based Laboratory), finalizzati a evidenziare la caratteristica unificante del fattore di Boltzmann nella descrizione …
L'Energia al centro
2017
Un corso concepito, progettato e scritto specificamente per gli Istituti Tecnici e non derivato da edizioni dello scientifico. Il programma è strutturato nel pieno rispetto delle indicazioni nazionali, ma con attenzione alla prassi didattica e l’approccio a ogni singolo argomento è calibrato e declinato per il target di studenti che si iscrivono a questo tipo di scuole. Il corso si sviluppa in cinque temi e il concetto di energia come portante di tutta la disciplina viene accostato a tutti i concetti fondamentali della fisica, a mano a mano che essi vengono presentati. Tre grandi infografiche aprono il libro legano i concetti presentati nel corso di fisica alla vita quotidiana. La teoria è …
Forze di attrito e determinazione del coefficiente di attrito statico
2013
An Inquiry-based approach to the Franck-Hertz experiment
2014
In this study we present the results of an inquiry-driven learning path experienced by a sample of 15 selected engineering undergraduates engaged to perform the Franck-Hertz experiment. Before being involved in this experimental activity, the students received a traditional lecture-based instruction on the fundamental concepts of quantum mechanics. Despite the instructor’s introduction to specific technological/engineering-based contents during the course, the students’ answers to an open-ended questionnaire, administered at the end of the lectures, demonstrated that the acquired knowledge was characterized by a strictly theoretical vision of quantum science, basically in terms of an artifi…
Exploring Historical Scientific Instruments by Using Mobile Media Devices
2022
We describe an educational activity that can be completed with mobile media devices in order to understand the working principle of a pair of tuning forks, from the Historical Collection of Physics Instruments of the University of Palermo, and how they were used to explain acoustic interference and beats with the Lissajous optical method. This approach can be used with any tuning fork and it is a valuable teaching strategy that does not require specific laboratory equipment.
Heating and Cooling: Designing a Low Energy Home
2014
This unit is aimed at engaging students in designing and building an energy-efficient scale model house through the understanding of relevant concepts of energy flow in thermal systems. It is developed into 4 subunits that analyse the different processes of thermal energy transfer (conduction, convection and radiation). The project intends also to introduce pupils to infrared thermography, thermal imaging and thermograms, i.e. infrared imaging science. The content area of the unit is energy and power in thermal systems. The subunits are suitable for 14-16 year old students while the data analysis and more theoretical parts of the unit are suitable for 16-18 year old students. The estimated …
Epistemological Difficulties and Improvement of Conceptual Understanding in the Context of Thermal Sciences: An Open Inquiry Approach with Undergradu…
2016
We provide evidence that these OI experiences contribute positively to improve physics conceptual understanding and increase student abilities in problem solving, by providing the activation of appropriate epistemological resources.
An Inquiry-based approach to the Franck-Hertz experiment
2015
The practice of scientists and engineers is today exerted within interdisciplinary contexts, placed at the intersections of different research fields, including nanoscale science. The development of the required competences is based on an effective science and engineering instruction, which should be able to drive the students towards a deeper understanding of quantum mechanics fundamental concepts and, at the same time, strengthen their reasoning skills and transversal abilities. In this study we report the results of an inquiry-driven learning path experienced by a sample of 12 electronic engineering undergraduates engaged to perform the Franck-Hertz experiment. Before being involved in this…
Un’indagine sperimentale sul ruolo della temperatura am- biente nel processo di riscaldamento/raffreddamento per ir- raggiamento
2012
The process of heating / cooling of an object in vacuum can be studied by the known Stefan's law. Many studies have investigated this phenomenon without inquire the role of the environment and of its temperature. In this paper the author proposes an experimental method through which to study the above process, by monitoring the ambient temperature on the assumption that this can vary with an exponential law. Under this hypothesis, in defined conditions, the temporal evolution of cooling of the object is similar to the case where the con- vection and / or the conduction are the principale phenomenon of energy exchange.