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Educational Studies in Mathematics - In mathematics education research, proofs are often conceptualized as sequences of mathematical assertions. We argue that this ignores proofs that contain... 相似文献
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This paper analyses urban waste systems to explore how local authorities can resolve challenges related to climate change, urbanization and resource depletion. The paper investigates how different public governance regimes affect local authorities’ ability to move upwards in the waste hierarchy. It identifies three different governance regimes – traditional bureaucracy, new public management and networked governance – and uses the insights from innovation in urban waste in three Norwegian city regions – Oslo, Drammen and Bergen – to illuminate how these regimes possess both strengths and weaknesses in how they affect system optimization and system change. The observed working practices signal that the issue of urban waste systems is perceived as a challenge of system optimization rather than system change. Viewing this as a challenge requiring system change would probably have ensured a stronger directionality and a broader anchoring of actors. Such an approach is likely to have arrived at a waste prevention mode earlier than the step-by-step-solutions implemented so far. The paper concludes that there is not one best governance regime, but a need to acknowledge their co-existence and carefully consider the characteristics of the respective regimes in order to arrange urban waste systems for long-term dynamic and sustainable city regions. 相似文献
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Antje Barabasch 《Compare》2013,43(2):155-183
Germany's vocational education and training (VET) and corresponding teacher-education programmes are known worldwide for their integrated framework. Government legislation unifies companies, unions and vocational schools, and specifies the education and training required for students as well as vocational teachers. Changing from the Diplom programme model to the Anglophone Bachelor and Masters degree model has raised concerns for VET teacher preparation. It is within this context that we explore Germany's VET teacher-education system and current academic debates. We further investigate challenges in the development of Canada's VET teacher-education programmes and suggest some policy borrowing from the German model. 相似文献
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Jörn R. Sparfeldt Rumena Kimmel Lena Löwenkamp Antje Steingräber Detlef H. Rost 《Educational Assessment》2013,18(4):214-232
Multiple-choice (MC) reading comprehension test items comprise three components: text passage, questions about the text, and MC answers. The construct validity of this format has been repeatedly criticized. In three between-subjects experiments, fourth graders (N 1 = 230, N 2 = 340, N 3 = 194) worked on three versions of MC items from the Progress in International Reading Literacy Study 2001 reading comprehension test with relevant components successively deleted: “original version” (text, questions, MC-answers), “version without text” (questions, MC-answers), “version without text and without questions” (only MC-answers). Answering correctly the MC items became more difficult as the relevant information was eliminated. In the two narrative fictional texts presented, the students' performance of the version without text was not better than chance. Conversely in the informational (fictional) text, the students' performance of the version without text was better than chance. In the third condition, students' performance was never better than chance. 相似文献
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Several researchers emphasize the role of the writer’s topic knowledge for writing. In academic writing topic knowledge is often constructed by studying source texts. One possibility to support that essential phase of the writing process is to provide interactive learning questions which facilitate the construction of an adequate situation model by initiating macro-strategies. In order to examine whether the provision of interactive learning questions during studying source texts leads to better results in academic writing both writing process and performance of a group supported by interactive learning questions was compared to a study-only group which read the source texts without learning questions. Results revealed that students provided with interactive learning questions wrote longer essays and spend significantly more time prewriting and writing/revising their essays than did the students of the study-only group. Studying source texts with learning questions resulted in text products of better readability and partly better accuracy and coverage of content. These findings suggest that engaging students in answering learning questions when reading source texts can positively affect both writing process and performance. 相似文献