New alignments for the digital age: insights into connected learning

Educational technology research and development - In an age of ready access to people, online spaces and information, canonized formal knowledge acquisition is being disrupted. The emergence of...     

Binary Pathfinder: An improvement to the Pathfinder algorithm

The Pathfinder algorithm is widely used to prune social networks. The pruning maintains the geodesic distances between nodes. It has shown itself to be very useful in the analysis of, amongst others, citations in BIS (bibliometrics, informetrics, and scientometrics). It has even been proposed for the online display of the search results in an information retrieval system. However, its great time and space complexity limits its use in real-time applications and in networks of any considerable size.The present work describes an improved algorithm with considerably reduced time and space complexity. Its lower execution costs thus increase its applicability both in real time and to large networks.     

Portuguese science teachers' education,attitudes, and practice relative to the issue of alternative conceptions

Many studies have shown that students of all school levels hold alternative conceptions that differ from the scientific conceptions transmitted by the school. These results raise some questions about the efficacy of traditional teaching and stress the need for using teaching strategies that explicitly take into account the alternative conceptions that students bring to the science classes. This issue has recently been raised and widely discussed throughout Portugal and the proposals for the new science syllabuses advise teachers to take it into account. However, the number of studies investigating both the teachers' attitudes towards this issue and the use of teaching strategies based on students' alternative conceptions is very limited. This article aims to present the results obtained from science teachers about their attitudes towards students' alternative conceptions and the use of teaching strategies based on these conceptions. The results may contribute to the planning of in-service courses.     

When differences do not matter: inclusion in a Mexican primary school / Cuando las diferencias no importan: la inclusión en una escuela primaria mexicana

Studies show that disability is a cause of educational exclusion worldwide. Different countries adopt different views of the inclusion movement. Different variables seem to be associated with the success or failure of inclusion. This study takes place in a primary school located in Mexico. It aims to identify how inclusion is experienced by children with and without special needs, and the connections between inclusion and quality of life. Measures utilized were the questionnaire My Primary School from the Index for Inclusion and the Questionnaires on Assessment of Quality of Life for Children, self-report, and parents’ report. Participants are 69 regular students and 15 students with special education needs. Self-reports from regular children and proxy reports from the mothers of the special education needs students were analysed. Results indicated that there is an association between perceived inclusion and experiencing quality of life; having special needs does not impact on scores on QoL or inclusion; educational level does not impact on perceived QoL or inclusion for special education students. These results are discussed in light of a culture that appreciates diversity.     

“The Day That Changed My Life,Again”: The Testimonio of a Latino DACAmented Teacher

This article, based on the testimonio of a Latino DACAmented teacher, underscores the impacts and benefits of immigration policies for individuals and their communities. Deferred Action for Childhood Arrivals (DACA) has benefitted about 750,000 people; most have used the benefits to pursue higher education and to enter public service careers, including teaching and nursing. Mr. Juárez’s testimonio walks us through his educational trajectory and current role as an educator. This testimonio contributes to current debates and struggles demanding the new U.S. presidential administration to maintain DACA. As researchers, we urge students, educators, policymakers, and the incoming administration to listen to the testimonios of DACA beneficiaries prior to making hasty decisions that will have dire consequences for individuals, families, and the nation, as a whole.     

Introduction to the Treatment of Non-Linear Effects Using a Gravitational Pendulum

We show that the treatment of pendulum movement, other than the linear approximation,may be an instructive experimentally based introduction to the physics of non-lineareffects. Firstly the natural frequency of a gravitational pendulum is measured as functionof its amplitude. Secondly forced oscillations of a gravitational pendulum are investigatedexperimentally without limiting amplitudes. By this arrangement new phenomena, thebistability and the jump-effect, can be observed. In the case of bistability the drivengravitational pendulum can oscillate in two different stable modes. Either it oscillateswith a small amplitude and approximately in phase with the exciting torque or it oscillateswith a larger amplitude and approximately anti-phase. The jump effect is the spontaneoustransition from one mode of oscillation to the other. Both effects can be demonstrated andexplained.     

英国公共部门信息再利用模式分析

英国在公共部门信息再利用方面取得的成绩有目共睹,可与美国的公共部门信息再利用相提并论。英国的公共部门信息再利用在发展过程中形成了自己的特点,构建了独有的英国公共部门信息再利用模式。该模式特点是:有力的监管环境、设立专门的监管机构、鼓励公众积极参与、利用先进的信息技术。该模式存在的问题是:规则中的某些术语不明确、监管机构没有真正的制裁权、地方政府缺乏对公共部门信息政策的支持。     

Trust and Mistrust in Sources of Scientific Information on Climate Change and Vaccines

Science & Education - Public trust in science and expertise remains a contentious issue. When public trust is analysed, it often simplifies a complex process of information retrieval and...     

Documenting Collections: Cornerstones for More History of Science in Museums

Historians of science have recently become increasingly involved with collections and scientific instruments. This creates opportunities for a more significant role of history in museums of science, as well as more meaningful and contextualized exhibitions and educational programmes. However, complementing the mainstream focus on universal scientific principles with history requires structural and cultural changes in museums’ approaches and practices. In this paper we draw from recent collaborative work with historians of science at the University of Lisbon to reflect on the challenges museums face as they prepare for a more meaningful historical approach to science. We argue that documentation is crucial both before objects enter the museum and as regular collections practice. We propose a conceptual and methodological framework comprising two operational levels: documenting individual objects and documenting collections.