1,720,991 research outputs found
The construction of a coherent interpretation of electrostatic interactions in the context of training teachres
No full textSeveral studies highlight the importance of electrostatics as regards its role of disciplinary foundation. Research on learning processes and teaching/learning proposals highlighted some important difficulties that affect knowledge also in other fields. Incoherent statements using microscopic entities with different roles and modalities in different experiences are founded in high-school and university students and are a prelude to formative deficiencies as regards teachers also on the methodological plane. They rise from a teaching approach in which the implicit assumptions are mainly on the types of reasoning leading to the identification of electrified states of the system and the ways by which these are obtained. Especially for cases where assumptions involving the microscopic world are needed it is extremely important to build in an explicit, rigorous and organic way the phenomenological elements associated to the interpretative reasoning that base these assumptions. For the importance of the basic scientific education and related teacher training a Formative Intervention Module (MIF) was carried out in which we investigate the recognition of common elements in phenomenology to build interpretative frameworks gradually wider and of more general value
Conservation of charge to understand potential using on line charge Measurements
No full textElectric potential turns out to be one of the most difficult concepts in
students’ learning: its role is not recognized either in electrokinetics or in electrostatics.
In this area the transfer of charge between conductors is explained according to
Coulomb’s law and looking at the same amount of an entity on them as a balancing
factor. Moreover, students’ ideas often imply a lack of awareness about the conservation
of charge. The inclusion of the idea of potential as a magnitude running the
transfer of charge was planned in a vertical path on electrostatics using a strategy
based on simple experiments. The need for repeated quantitative measurements,
with good sensitivity, makes the on-line measure a determining facto
Role play as a strategy to discuss spontaneous interpreting models of electric properties of matter: an informal education model
No full textAn experimental approach of nodes towards the electric potential for students and teachers
No full textElectricity is a common learning topic. Early research on students’ difficulties on circuits pointed out that the concept of potential does not have role nor meaning and referred it to the link between electrostatics and circuits. Subsequent research highlighted how potential is not recognized as a significant quantity for charge transfer or in activities to bridge electrostatics and circuits, micro and macro view. Starting from these outcomes a teaching/learning proposal was designed on charge transferwith simple hands-on experiments and sensors. It aims at realizing the students’ cognitive need for an interpretative quantity (potential) driving the charge transfer, with a meaning of energy. (Formula presented)
Educazione scientifica nell'educazione stradale
No full textEducazione stradale come educazione alla cittadinanza e alla cultura scientifica: un progetto trasversale proposto dall'Ufficio Scolastico Regionale per il Friuli Venezia Giulia nel 2009 alle scuole della provincia di Trieste
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