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Analogical reasoning by comparison is considered a special case of inductive reasoning, which is fundamental to the scientific method. By reasoning analogically, learners can abstract the underlying commonalities of several entities, thereby ignoring single objects’ superficial features. We tested whether different task environments designed to trigger analogical reasoning by comparison would support preschoolers’ induction of the concept of material kind to predict and explain objects’ floating or sinking as a central aspect of scientific reasoning. Specifically, in two experiments, we investigated whether the number of presented objects (one versus two standards), consisting of a specific material and the labeling of objects with the respective material name, would benefit preschoolers’ material-based inferences. For each item set used in both experiments, we asked the children (N = 59 in Experiment 1, N = 99 in Experiment 2) to predict an object’s floating or sinking by matching it to the standards and to verbally explain their selections. As expected, we found a significant effect for the number of standards in both experiments on the prediction task, suggesting that children successfully induced the relevance of material kind by comparison. However, labels did not increase the effect of the standards. In Experiment 2, we found that the children could transfer their conceptual knowledge on material kind but that transfer performance did not differ among the task environments. Our findings suggest that tasks inviting analogical reasoning by comparison with two standards are useful for promoting young children’s scientific reasoning.
The use of scaffolding to promote preschool children’s competencies of evidence-based reasoning
(2021)
Scientific reasoning encompasses individuals‘ evaluation of evidence with regard to a given hypothesis. In this study, we investigated whether preschool children are able to reason with empirical evidence in the science context of elasticity. N = 63 preschoolers were presented with tasks following the deductive reasoning paradigm and were asked to evaluate the relevance of given events (objects) with regard to a hypothesis. In a repeated measures experimental design with three groups, we tested whether different forms of scaffolding (adaptive prompts with/without modeling of advanced reasoning) would promote children’s reasoning compared to a control group without intervention. We found that adaptive prompts with modeling significantly improved children’s evaluation of irrelevant events in the posttest. Further, these children’s reasoning patterns scored significantly higher than those of the control group. Our results suggest that preschool children are able to reason with evidence if they are given adequate support. Specifically, the modeling of advanced reasoning functioned as a scaffold beyond the use of adaptive prompts in irrelevant event evaluations.
We investigate the effectiveness of professional development (PD) aimed at promoting teachers' language-support skills in elementary school science instruction. In a 2-year quasi-experimental field trial study with 32 teachers in Germany, an intervention group (IG) and a control group (CG) received PD for teaching selected science topics; the IG additionally received PD for language support. Strong treatment effects emerged on teachers’ language-support skills and, to a lesser extent, on language support activities in classroom teaching. All teachers gained pedagogical content knowledge and self-efficacy for teaching elementary school science, thus pointing to the effectiveness of the PD.
In diesem Beitrag wird ein hochschuldidaktisches Konzept zur Förderung des reflektierten Umgangs mit Heterogenität im schulischen Kontext unter Verwendung digitaler Lerneinheiten vorgestellt. Im Projekt "Level – Lehrkräftebildung vernetzt entwickeln" (Qualitätsoffensive Lehrerbildung BMBF, Goethe-Universität Frankfurt) wurden in den Bildungswissenschaften digitale Lerneinheiten zu den Heterogenitätsdimensionen "Geschlecht", "kultureller Hintergrund", "sozio-ökonomischer Hintergrund", "kognitiv-motivationale Lernvor-aussetzungen" und "Behinderung" konzipiert und in der universitären Lehre erprobt. Die Auswahl der erstellten Lerneinheiten begründet sich auf Ergebnissen der PISA-Studien sowie der UN-Behindertenrechtskonvention. Die Lerneinheiten werden in Blended-Learning-Szenarien eingesetzt und zielen auf den Aufbau von Fachwissen und professionellen Überzeugungen sowie Reflexivität. Auf der Grundlage individuellen Vorwissens werden von den Lernenden (videobasierte) Aufgaben bearbeitet, die der Perspektivübernahme und Selbstreflexion im Hinblick auf Kategorisierungen dienen und die Bearbeitung fachwissenschaftlicher Texte und aktueller Studien beinhalten. Arbeitsergebnisse können digital im Peer-Feedback bearbeitet sowie mit einem digitalen Portfolio verbunden werden. Das Onlineformat ermöglicht die fächer- und phasenübergreifende Nutzung durch Dozierende sowie Ausbilder_innen an Studienseminaren. Zusätzlich zu den fünf Lerneinheiten wurden eine einführende Version für Studierende und eine erweiterte Version für Lehrende erstellt, die einen Einblick in Aufbau und Struktur des Formats gibt und als "pädagogischer Doppeldecker" konzipiert ist. Die formative Evaluation mit Lehramtsstudierenden und Ausbilder_innen ergab positive Ergebnisse hinsichtlich der Einsetzbarkeit der Lerneinheiten in der Lehramtsausbildung.
Adaptive teaching is considered fundamental to teaching quality and student learning. It describes teachers’ practices of adjusting their instruction to students’ diverse needs and levels of understanding. Adaptive teaching on a micro level has also been labeled as contingent support and has been shown to be effective in one-to-one and small-group settings. In the literature, the interplay of teachers’ diagnostic strategies and instructional prompts aiming at tailored support are emphasized. Our study adds to this research by presenting a reliable measurement approach to adaptive classroom discourse in elementary science which includes a global index and the single indices of diagnostic strategies, instructional support, and student understanding. Applying this coding scheme, we investigate whether N = 17 teachers’ adaptive classroom discourse predicts N = 341 elementary school students’ conceptual understanding of “floating and sinking” on two posttests. In multilevel regression analyses, adaptive classroom discourse was shown to be effective for long-term student learning in the final posttest, while no significant effects were found for the intermediate posttest. Further, the single index of diagnostic strategies in classroom discourse contributed to long-term conceptual restructuring. Overall, teachers rarely acted adaptively which points to the relevance of teacher professional development.