La réflexion des enseignants dans l'enseignement des sciences dans l’école primaire

Esta investigación es un estudio de casos que hace eje en el análisis de las propias prácticas como una competencia profesional crucial. El proceso supone un recorrido a través de distintas etapas en un dispositivo de análisis que integra entrevistas previas, videograbaciones de clases e instancias de autoconfrontación con episodios filmados de la propia actividad de enseñanza. Los resultados muestran, por un lado, bajos niveles reflexivos y, por otro, la integración de dimensiones morales y de naturalización del conocimiento escolar. Ambas evidencias suponen fuertes obstáculos en la enseñanza de las ciencias en primaria.This research is a case study that makes axis in analyzing own practices as a core competence. The process involves a journey through different stages in an analysis device that integrates previous interviews, video recordings of classes and instances of self-confrontation with episodes filmed with their own teaching activity. The results show levels by a low reflective side and, on the other, integration of moral dimensions and naturalization in school knowledge. Both evidences represent strong obstacles in science education in primary.Cette recherche est une étude de cas qui fait l'axe dans l'analyse des pratiques propres comme une compétence de base. Le processus implique un voyage à travers différentes étapes dans un dispositif d'analyse qui intègre des interviews précédentes, des enregistrements vidéo des classes et des instances d'auto-confrontation avec des épisodes filmés de leur propre activité d'enseignement. Les résultats montrent des niveaux d'un côté bas de réflexion et de l'autre, les dimensions morales de l'intégration et la naturalisation dans la connaissance de l'école. Les deux représentent de solides obstacles sur des données probantes dans l'enseignement des sciences dans le primaire.Agencia Nacional de Promoción Científica y Tecnológica PICTO-006

Investigación en la escuela

Resumen tomado de la publicaciónEsta investigación es un estudio de casos que hace eje en el análisis de las propias prácticas como una competencia profesional crucial. El proceso supone un recorrido a través de distintas etapas en un dispositivo de análisis que integra entrevistas previas, videograbaciones de clases e instancias de autoconfrontación con episodios filmados de la propia actividad de enseñanza. Los resultados muestran, por un lado, bajos niveles reflexivos y, por otro, la integración de dimensiones morales y de naturalización del conocimiento escolar. Ambas evidencias suponen fuertes obstáculos en la enseñanza de las ciencias en primaria.ES

Revolution: Museo de las estrellas un paseo por la fama : Hollywood

Convocatoria proyectos de innovación de Extremadura 2020/2021Se describe un proyecto llevado a cabo entre 13 centros educativos extremeños que consistió en desarrollar cinco unidades de trabajo gamificadas, cinco historias detectivescas con misterios por resolver, donde se ponían a prueba las habilidades de lógica, la capacidad de observación, de concentración y de atención de los alumnos. Los objetivos principales de la propuesta fueron: promover la puesta en práctica de proyectos intercentros; impulsar pedagogías activas; desarrollar la competencia digital a través del uso de las pedagogías emergentes lo que ha permitido llevar a cabo una enseñanza presencial, híbrida y virtual y atender a la diversidadExtremaduraES

Clinical manifestations of intermediate allele carriers in Huntington disease

Objective: There is controversy about the clinical consequences of intermediate alleles (IAs) in Huntington disease (HD). The main objective of this study was to establish the clinical manifestations of IA carriers for a prospective, international, European HD registry. Methods: We assessed a cohort of participants at risk with <36 CAG repeats of the huntingtin (HTT) gene. Outcome measures were the Unified Huntington's Disease Rating Scale (UHDRS) motor, cognitive, and behavior domains, Total Functional Capacity (TFC), and quality of life (Short Form-36 [SF-36]). This cohort was subdivided into IA carriers (27-35 CAG) and controls (<27 CAG) and younger vs older participants. IA carriers and controls were compared for sociodemographic, environmental, and outcome measures. We used regression analysis to estimate the association of age and CAG repeats on the UHDRS scores. Results: Of 12,190 participants, 657 (5.38%) with <36 CAG repeats were identified: 76 IA carriers (11.56%) and 581 controls (88.44%). After correcting for multiple comparisons, at baseline, we found no significant differences between IA carriers and controls for total UHDRS motor, SF-36, behavioral, cognitive, or TFC scores. However, older participants with IAs had higher chorea scores compared to controls (p 0.001). Linear regression analysis showed that aging was the most contributing factor to increased UHDRS motor scores (p 0.002). On the other hand, 1-year follow-up data analysis showed IA carriers had greater cognitive decline compared to controls (p 0.002). Conclusions: Although aging worsened the UHDRS scores independently of the genetic status, IAs might confer a late-onset abnormal motor and cognitive phenotype. These results might have important implications for genetic counseling. ClinicalTrials.gov identifier: NCT01590589

Clinical and genetic characteristics of late-onset Huntington's disease

Background: The frequency of late-onset Huntington's disease (&gt;59 years) is assumed to be low and the clinical course milder. However, previous literature on late-onset disease is scarce and inconclusive. Objective: Our aim is to study clinical characteristics of late-onset compared to common-onset HD patients in a large cohort of HD patients from the Registry database. Methods: Participants with late- and common-onset (30–50 years)were compared for first clinical symptoms, disease progression, CAG repeat size and family history. Participants with a missing CAG repeat size, a repeat size of ≤35 or a UHDRS motor score of ≤5 were excluded. Results: Of 6007 eligible participants, 687 had late-onset (11.4%) and 3216 (53.5%) common-onset HD. Late-onset (n = 577) had significantly more gait and balance problems as first symptom compared to common-onset (n = 2408) (P &lt;.001). Overall motor and cognitive performance (P &lt;.001) were worse, however only disease motor progression was slower (coefficient, −0.58; SE 0.16; P &lt;.001) compared to the common-onset group. Repeat size was significantly lower in the late-onset (n = 40.8; SD 1.6) compared to common-onset (n = 44.4; SD 2.8) (P &lt;.001). Fewer late-onset patients (n = 451) had a positive family history compared to common-onset (n = 2940) (P &lt;.001). Conclusions: Late-onset patients present more frequently with gait and balance problems as first symptom, and disease progression is not milder compared to common-onset HD patients apart from motor progression. The family history is likely to be negative, which might make diagnosing HD more difficult in this population. However, the balance and gait problems might be helpful in diagnosing HD in elderly patients

Global polarization of Λ and Λ hyperons in Pb-Pb collisions at √ s N N = 2.76 and 5.02 TeV

The global polarization of Λ and Λ hyperons is measured for Pb-Pb collisions at √sNN = 2.76 and 5.02 TeV recorded with the ALICE at the Large Hadron Collider (LHC). The results are reported differentially as a function of collision centrality and hyperon’s transverse momentum (pT ) for the range of centrality 5–50%, 0.5 < pT < 5 GeV/c, and rapidity |y| < 0.5. The hyperon global polarization averaged for Pb-Pb collisions at √sNN = 2.76 and 5.02 TeV is found to be consistent with zero, ⟨PH⟩(%)≈0.01±0.06(stat.)±0.03(syst.) in the collision centrality range 15–50%, where the largest signal is expected. The results are compatible with expectations based on an extrapolation from measurements at lower collision energies at the Relativistic Heavy Ion Collider, hydrodynamical model calculations, and empirical estimates based on collision energy dependence of directed flow, all of which predict the global polarization values at LHC energies of the order of 0.01%