Verso una "scuola modulare"

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Un modello di comunicazione del formatore in rete

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Techniques for fostering collaboration in online learning communities

Collaboration is, to date, extensively adopted for supporting learning processes, both in face-to-face and in virtual learning contexts. However, technology profoundly changes the nature of human interactions and, consequently, also changes the nature of the collaborative learning process, yielding a range of new potentialities and problems. "Techniques for Fostering Collaboration in Online Learning Communities: Theoretical and Practical Perspectives" provides a focused assessment of the peculiarities of online collaborative learning processes by looking at the strategies, methods, and techniques used to support and enhance debate and exchange among peers. Offering an extensive discussion of the design, management, monitoring, and evaluation of learning processes, this work reviews issues from both a theoretical and practical viewpoint and includes methodological contributions as well as perspectives on real experiences

Nascita di una comunit? di formatori in rete

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GE8

abstract not availableUn progetto educativo come laboratorio dell\u27innovazione scolastica nato in occasione del G8 a Genov

Task, Team and Time to structure online collaboration in learning environments

The debate on whether and how to structure collaboration in online learning environments is quite active. In this paper the authors identify Task, Team and Time as the main components of an online collaborative activity, through which the overall structure of the activity can be determined to scaffold learners\u27 interactions. Based on five examples of real-life online learning activities featuring different degrees of structure as to Task, Team and Time, the authors reflect on the extent to which the way these three dimensions are structured may affect the overall learning process. Method of the study is interaction analysis of the students messages, exchanged in asynchronous mode during the activity. The analysis was carried out according to a quantitative and qualitative model that distinguishes among the participative, social, cognitive and teaching dimensions. The results of the study seem to support the hypothesis that the three Ts well represent the structure of CSCL activities and that, in many cases, it is the lack of structure in one or more of them that is associated to a higher frequency of some indicators, as if the missing guidance causes an enhanced effort on the side of the learners to compensate the deficit

The PEP Survey: evidence for intense star-forming activity in the majority of radio-selected AGN at z>~1

In order to investigate the FIR properties of radio-active AGN, we have considered three different fields where both radio and FIR observations are the deepest to-date: GOODS-South, GOODS-North and the Lockman Hole. Out of a total of 92 radio-selected AGN, ~64% are found to have a counterpart in Herschel maps. The percentage is maximum in the GOODS-North (72%) and minimum (~50%) in the Lockman Hole, where FIR observations are shallower. Our study shows that in all cases FIR emission is associated to star-forming activity within the host galaxy. Such an activity can even be extremely intense, with star-forming rates as high as ~10^3-10^4 Msun/yr. AGN activity does not inhibit star formation in the host galaxy, just as on-site star-formation does not seem to affect AGN properties, at least those detected at radio wavelengths and for z>~1. Furthermore, physical properties such as the mass and age distributions of the galaxies hosting a radio-active AGN do not seem to be affected by the presence of an ongoing star-forming event. Given the very high rate of FIR detections, we stress that this refers to the majority of the sample: most radio-active AGN are associated with intense episodes of star-formation. However, the two processes proceed independently within the same galaxy, at all redshifts but in the local universe, where powerful enough radio activity reaches the necessary strength to switch off the on-site star formation. Our data also show that for z>~1 the hosts of radio-selected star-forming galaxies and AGN are indistinguishable from each other both in terms of mass and IR luminosity distributions. The two populations only differentiate in the very local universe, whereby the few AGN which are still FIR-active are found in galaxies with much higher masses and luminosities.Comment: 20 pages, 22 figures, to appear in MNRA

"Quel che resta" di un corso in rete

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Il quadro generale del sistema scolastico italiano

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Comunit? di insegnanti pionieri in Europa

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