Fighting segregation in special needs education in the Netherlands: the effects of different funding models

ABSTRACT

In the past few decades, the number of students attending segregated special schools in the Netherlands has risen considerably. In 1975, 2.2% of all students between 4 and 11 years old attended a special school, and this percentage almost doubled to 4.3% over the next 20 years. In order to stop further growth, two new education policies came into force in 1995 and 2003: Together to School Again and the so-called Backpack. These policies differed in the way that special needs funding was allocated. Together to School Again was based on lump sum funding to schools, while Backpack was linked to the individual and based on individual needs. Neither of these policy initiatives has been particularly successful in reducing the number of students with special needs in segregated settings. In theory, lump sum funding seemed a promising option, but the combination of two different ways of funding special needs education proved to be problematic. The Dutch experience illustrates the difficulties of effecting fundamental structural changes in this field.     

Development of Scientific Thinking Facilitated by Reflective Self‐Assessment in a Communication‐Intensive Food Science and Human Nutrition Course

A one‐credit seminar on controversies in food science and human nutrition was a platform to introduce students to learning frameworks for thinking‐like‐a‐scientist. We hypothesized that explicitly engaging students in thinking about their thinking abilities within these frameworks would enhance their self‐perception of scientific thinking, an important general ability for food scientists. Our objectives were to assess thinking‐like‐a‐scientist using a student self‐assessment survey, and analyze their self‐reflections for evidence of such thinking. For students enrolled in one of the offerings of this course among 5 semesters from 2012 to 2014, differences in scores on a survey instrument for thinking‐like‐a‐scientist from the beginning to the end of the course showed gains in self‐assessed abilities (N = 21 to 22 students/semester). In each of the first 2 semesters in which we introduced thinking‐like‐a‐scientist frameworks, students thought they were better at defining problems scientifically by 13% to 14%. In the 3rd course offering, students’ self‐assessment of their abilities to seek evidence improved by 10%. In the 4th and 5th semester course offerings, students’ self‐assessed abilities to develop plans based on evidence improved by 7% to 14%. At the end of each semester, students’ self‐reflections on scientific thinking (N = 20 to 24/semester) included specific reference to asking questions (45% to 65% of reflections) and making plans based on evidence (26% to 50% of reflections). These data support the usefulness of self‐reflection tools as well as specific learning frameworks to help students to think about and practice thinking‐like‐a‐scientist.     

Evaluation and management of leukolysis-mediated pseudohyperkalemia in paediatric leukemic samples

IntroductionLeukolysis-related pseudohyperkalemia due to preanalytical procedures may lead to erroneous (or absence of) treatment based on an invalid lab test result. We aimed to obtain a leukocyte threshold above which leukolysis-related pseudohyperkalemia becomes clinical relevant. Secondly, temporal dynamics of treatment-induced leukocyte decrease were studied to allow tailored implementation of laboratory information system (LIS) decision rules based on the leukocyte threshold to avoid leukolysis-related pseudohyperkalemia.Materials and methodsPotassium results of AU5811 routine chemistry (Beckman Coulter, Brea, California, USA) and iStat point of care (POC) (Abbott Diagnostics, Chicago, Illinois, USA) analysers were compared, the latter method being insensitive to leukolysis caused by pre-analytical procedures. Potassium results were combined with leukocyte counts obtained using a Cell-Dyn Sapphire haematology analyser (Abbott Diagnostics, Santa Clara, California, USA), resulting in 132 unique data triplets. Regression analysis was performed to establish a leukocyte threshold. The Reference Change Value (√2 x Z x √(CV_a² + CV_i²)) was used to calculate maximum allowable difference between routine analyser and POC potassium results (delta_max + 0.58 mmol/L). Temporal analysis on the treatment-induced leukocyte decrease was performed by plotting leukocyte counts in time for all patients above the threshold leukocyte count (N = 41).ResultsEstablished leukocyte threshold was 63 x10⁹/L. Temporal analysis showed leukocyte counts below the threshold within 8 days of treatment for all patients.ConclusionsBased on performed analyses we were able to implement LIS decision rules to reduce pseudohyperkalemia due to preanalytical procedures. This implementation can contribute to a reduction in erroneous (or absence of) treatments in the clinic.     

Microfluidic carbon-blackened polydimethylsiloxane device with reduced ultra violet background fluorescence for simultaneous two-color ultra violet/visible-laser induced fluorescence detection in single cell analysis

In single cell analysis (SCA), individual cell-specific properties and inhomogeneous cellular responses are being investigated that is not subjected to ensemble-averaging or heterogeneous cell population effects. For proteomic single cell analysis, ultra-sensitive and reproducible separation and detection techniques are essential. Microfluidic devices combined with UV laser induced fluorescence (UV-LIF) detection have been proposed to fulfill these requirements. Here, we report on a novel microfluidic chip fabrication procedure that combines straightforward production of polydimethylsiloxane (PDMS) chips with a reduced UV fluorescence background (83%-reduction) by using PDMS droplets with carbon black pigments (CBP) as additives. The CBP-droplet is placed at the point of detection, whereas the rest of the chip remains transparent, ensuring full optical control of the chip. We systematically studied the relation of the UV background fluorescence at CBP to PDMS ratios (varying from 1:10 to 1:1000) for different UV laser powers. Using a CBP/PDMS ratio of 1:20, detection of a 100 nM tryptophan solution (S/N = 3.5) was possible, providing a theoretical limit of detection of 86 nM (with S/N = 3). Via simultaneous two color UV/VIS-LIF detection, we were able to demonstrate the electrophoretic separation of an analyte mixture of 500 nM tryptophan (UV) and 5 nM fluorescein (VIS) within 30 s. As an application, two color LIF detection was also used for the electrophoretic separation of the protein content from a GFP-labeled single Spodoptera frugiperda (Sf9) insect cell. Thereby just one single peak could be measured in the visible spectral range that could be correlated with one single peak among others in the ultraviolet spectra. This indicates an identification of the labeled protein γ-PKC and envisions a further feasible identification of more than one single protein in the future.     

Theory and Practice ‐‐Two Fundamental Categories in the Philosophy of Teacher Education

Taking the Swedish teacher education as its point of departure, two related problems are discussed in the article. 1) Practice is often understood as completely immersed in itself. Consequently there arises the problem if and how it can get out of this enclosedness and get some perspective on itself. Three ways are proposed of introducing distance into practice and, thereby, of establishing knowledge about practice: self‐reflection, dialogue, and scientific research. 2) Sometimes theory and practice are regarded as absolutely different and incompatible. According to this kind of dualism it is not possible to integrate any kind of theoretical knowledge into teachers professional actions. By showing how distance can be eliminated from theory and transformed into practical skill, it is argued that this dualism is not maintainable.     

Research into the construction of mathematical texts

Investigations of the actual reading process and of the structure of a mathematical text are important for elaborating didactical methods for teaching reading a mathematical text. The article reports on a broader project concerning the structure of a mathematical text. The structure of several hundred texts has been analyzed. Academic textbooks and mathematical monographs (especially in Polish) written by mathematicians have been used as a source. Characteristic features of proof construction, that may influence the course of the reading process, have been isolated. For instance, transmission means have been investigated such as text segmentation which uses delimiters and so called procedure schemes.     

Professional knowledge affects action-related skills: The development of preservice physics teachers' explaining skills during a field experience

Professional knowledge is an important source of science teachers' actions in the classroom (e.g., personal professional content knowledge [pedagogical content knowledge, PCK] is the source of enacted PCK in the refined consensus model [RCM] for PCK). However, the evidence for this claim is ambiguous at best. This study applied a cross-lagged panel design to examine the relationship between professional knowledge and actions in one particular instructional situation: explaining physics. Pre- and post a field experience (one semester), 47 preservice physics teachers from four different universities were tested for their content knowledge (CK), PCK, pedagogical knowledge (PK), and action-related skills in explaining physics. The study showed that joint professional knowledge (the weighted sum of CK, PCK, and PK scores) at the beginning of the field experience impacted the development of explaining skills during the field experience (β = .38**). We interpret this as a particular relationship between professional knowledge and science teachers' action-related skills (enacted PCK): professional knowledge is necessary for the development of explaining skills. That is evidence that personal PCK affects enacted PCK. In addition, field experiences are often supposed to bridge the theory-practice gap by transforming professional knowledge into instructional practice. Our results suggest that for field experiences to be effective, preservice teachers should start with profound professional knowledge.     

Neuropsychological intervention in kindergarten children with subtyped risks of reading retardation

Kindergarten children at risk of developing language problems were administered the Florida Kindergarten Screening Battery. A principal components analysis revealed a verbal and a visual-spatial component and subsequent discriminant function analyses a high verbal/low visual-spatial group (LAL: Latent L) and a high visual-spatial/low verbal group (LAP: Latent P). LAL- and LAP-children were considered at risk for developing an L- or P-type of dyslexia, respectively. As is common practice with children suffering from manifest L- or P- dyslexia, the LAL- and LAP-kindergartners received right and left hemisphere stimulation, respectively. The outcomes were compared with those of bilateral hemispheric stimulation and no intervention. Reading tests were administered in primary school Grades 1 and 5/6; teachers’ evaluation of reading took place in Grade 5/6. Overall, the LAL- and LAP- groups showed significant backwardness in word and text reading, both at early and late primary school. Types of intervention made a difference though: not significantly backward in early word, late word, and late text reading were the LAL-children who had received right hemisphere stimulation. Nonintervened LAP-children did not show significant backwardness in early word reading and late text reading, nor did LAP-children who had received left hemisphere or bilateral stimulation. Early text reading was not affected by any treatment. Teacher’s evaluations were in support of these findings.     

The agencement of taskification: On new forms of reading and writing in BYOD schools

Abstract

The proliferation of digital devices in educational settings has contributed to the decentralization of knowledge from teachers and established textbooks to fluid online personalized resources, and from blackboards as spaces of materialization of this knowledge to personal screens. In this new constellation, school practices such as reading, writing and note-taking take new forms. How are these practices reconfigured when centered around mobile digital devices? In this paper, we investigate routine lesson practices of a Bring Your Own Device (BYOD) school by means of an ethnographic observation. Adopting the term agencement as a heuristic device, we explore what practices are being constituted and how they are always in connection with one another. Moreover, we show that by practicing they produce different forms of action. We argue that in such a hybrid constellation, tasks find a different status beyond isolated and self-contained units for enhancing learning in different lessons. We introduce task-agencement, through which the task always entails a process of taskification that formats BYOD schools. With taskification, we mean that the task-agencement expands the domain in which tasks not only influence the organization and structure of lessons, but equally the very organization of the BYOD school by enacting a particular form of schooling. Finally, we propose a taskified form as a form of BYOD schooling that templates and formats how practices such as reading and writing, contextualization and introduction of the lesson are conducted.