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Giuliana Dettori 《British journal of educational technology : journal of the Council for Educational Technology》2012,43(6):E179-E179
This interesting book, addressed to school teachers and technology leaders, aims to build awareness of what are inappropriate behaviours in technology use and why they are potentially dangerous. Digital citizenship—the application of norms for productive and appropriate technology use—is relevant to all in our technology‐rich society, and should be an integral part of technology education. If this book is likely to be relevant to you, I recommend you borrow a copy. Giuliana Dettori 相似文献
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Reciprocal teaching is one of the most successfully implemented cooperative learning practices, yet many aspects of the process it follows are still unclear. The authors' aim was two-fold: To analyze whether reciprocal teaching activates diversity in discourse moves, communicative functions, and interaction sequences; and to determine whether reciprocal teaching needs to be based on prior work on student collaboration and cooperation skills in order to be effective (context dependency vs. context independency). Two groups with a different instructional background were compared: one with a teacher-centered and one with a student-centered approach. Forty-three third-grade students were led through a reciprocal teaching reading activity. Video recordings of each group were transcribed and analyzed at the micro level. Frequencies for each category were described and interpreted. The two groups did not differ significantly in the processes followed, indicating that reciprocal teaching is context independent and able to create interaction-rich and diverse environment. 相似文献
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Ca(OH)2 particles with submicrometric dimensions (nanolimes) are recently introduced in cultural heritage conservation, in order to improve lime treatments. Lime nanoparticles are typically produced by a chemical precipitation process in supersaturated aqueous solutions of the reactants (calcium chloride [CaCl2] and sodium hydroxide [NaOH]); water is then partially substituted with 2-propanol in order to improve stability and to reduce a random orientation of the particles. Aim of the present work is to analyse the influence of the nanolime suspensions concentration on the carbonatation process, in relation to the residual water content too. The obtained lime nanoparticles are characterised by X-rays diffraction (XRD) and profile analysis. Afterwards, the influence of the suspension concentration on stones protective treatments is evaluated: alcoholic nanolime suspensions, characterised by different concentration values, are applied on several natural lithotypes. Standard tests are performed to estimate the superficial consolidation and the protective treatment effectiveness: “Scotch tape test” (STT) and capillarity test. Porosimetric investigations are performed too. 相似文献
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Giuliana Dettori 《British journal of educational technology : journal of the Council for Educational Technology》2014,45(2):E6-E6
Multimodal composing in classrooms aims to encourage school teachers to change their view of literacy, through the analysis of experiences of multimodal literacies in a variety of learning contexts. Literacy entails not only reading and writing, but, working in different modes, effectively expressing oneself and understanding others’ expressions. Developing multimodal literacies is a powerful tool to foster learning and understanding and hence to improve school education. If what this book is about is likely to appeal to you, I recommend that you arrange to borrow a copy for a while. Giuliana Dettori 相似文献
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Bryce Thomas Battisti Nikki Hanegan Richard Sudweeks Rex Cates 《International Journal of Science and Mathematics Education》2010,8(5):845-868
Concept inventories are often used to assess current student understanding although conceptual change models are problematic.
Due to controversies with conceptual change models and the realities of student assessment, it is important that concept inventories
are evaluated using a variety of theoretical models to improve quality. This study used a modified item response theory model
to determine university nonmajor biology students’ levels of understanding of natural selection (n = 1,192). Using Conceptual Inventory of Natural Selection, we have reported how we applied Bock’s modified nominal item response
theory model and the distracter test item analysis. We found that the use of this model can define student levels of understanding
and identify problematic distracters. 相似文献