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Science and Mathematics Education Commons™
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Articles 1 - 7 of 7
Full-Text Articles in Science and Mathematics Education
Relatório Do Projeto: Os Livros Didáticos De Ciências Para O Ensino Secundário Brasileiro Do Século Xix [Project Report: Science Textbooks In Brazilian Secondary Education During The Nineteenth Century], Karl M. Lorenz
Karl M Lorenz
Este trabalho apresenta um sumario dos objetivos, metodologia, e resultados preliminares de uma projeto de pesquisa, iniciada em 2002, que identifica, descreve e contextualiza 32 textos escolares de ciência adotados no Colégio de Pedro II, a instituição secundário modelo no Brasil durante o século XIX.
The paper presents a summary of the objectives, methodology and preliminary results of a research project, initiated in 2002, that identifies, describes and contextualizes 32 science textbooks adopted in the College Pedro II, the model secondary institution in Brazil during the XIX century.
Facilitating Identity Formation, Group Membership, And Learning In Science Classrooms: What Can Be Learned From Out Of Field Teaching In An Urban School, Stacy Olitsky
Stacy Olitsky
This paper explores both the obstacles and the possibilities for students developing identities associated with science by engaging in solidarity-building classroom interactions. Data come from ethnographic research conducted in a diverse eighth-grade urban magnet school classroom in which the teacher taught out of field for part of the year. Contrary to expectations, more students participated and reported enjoying science when the teacher was out of field. Analysis of classroom interactions indicated that while in field, the teacher primarily engaged in “front stage” performances that hid her struggles with the material and accentuated students’ views of science as an elite status …
Promoting Student Engagement In Science: Interaction Rituals And The Pursuit Of A Community Of Practice, Stacy Olitsky
Promoting Student Engagement In Science: Interaction Rituals And The Pursuit Of A Community Of Practice, Stacy Olitsky
Stacy Olitsky
This study explores the relationship between interaction rituals, student engagement with science, and learning environments modeled on communities of practice based on an ethnographic study of an eighth grade urban magnet school classroom. It compares three interactional events in order to examine the classroom conditions and teacher practices that can foster successful interaction rituals (IRs), which are characterized by high levels of emotional energy, feelings of group membership, and sustained interest in the subject. Classroom conditions surrounding the emergence of successful IRs included mutual focus, familiar symbols and activity structures, the permissibility of some side-talk, and opportunities for physical and …
Identity, Interaction Ritual, And Students' Strategic Use Of Science Language, Stacy Olitsky
Identity, Interaction Ritual, And Students' Strategic Use Of Science Language, Stacy Olitsky
Stacy Olitsky
An important part of learning science is formulating ideas, debating explanations, and talking about science with others. Yet students may still avoid “talking science” in class even if they are familiar with the content knowledge. Drawing on data from an ethnographic study of an eighth-grade urban science classroom, I argue that students’ expressions of knowledge in science class can be considered a strategic move, or a choice, aimed at supporting identity claims and increasing the likelihood of engaging in successful interaction rituals characterized by entrainment and solidarity. The results of this study suggest that a student’s knowledge of the subject …
A New Abel Inversion By Means Of The Integrals Of An Input Function With Noise, Li Huang
A New Abel Inversion By Means Of The Integrals Of An Input Function With Noise, Li Huang
Li Huang
Abel’s integral equations arise inmany areas of natural science and engineering, particularly in plasma diagnostics. This paper proposes a new and effective approximation of the inversion of Abel transform. This algorithm can be simply implemented by symbolic computation, and moreover an nth-order approximation reduces to the exact solution when it is a polynomial in r2 of degree less than or equal to n. Approximate Abel inversion is expressed in terms of integrals of input measurement data; so the suggested approach is stable for experimental data with random noise. An error analysis of the approximation of Abel inversion is given. Finally, …
Learning From People, Things, And Signs, Michael H.G. Hoffmann
Learning From People, Things, And Signs, Michael H.G. Hoffmann
Michael H.G. Hoffmann
Starting from the observation that small children can count more objects than numbers—a phenomenon that I am calling the “lifeworld dependency of cognition”—and an analysis of finger calculation, the paper shows how learning can be explained as the development of cognitive systems. Parts of those systems are not only an individual's different forms of knowledge and cognitive abilities, but also other people, things, and signs. The paper argues that cognitive systems are first of all semiotic systems since they are dependent on signs and representations as mediators. The two main questions discussed here are how the external world constrains and …
The Complementarity Of A Representational And An Epistemological Function Of Signs In Scientific Activity, Michael H.G. Hoffmann, Wolff-Michael Roth
The Complementarity Of A Representational And An Epistemological Function Of Signs In Scientific Activity, Michael H.G. Hoffmann, Wolff-Michael Roth
Michael H.G. Hoffmann
Signs do not only “represent” something for somebody, as Peirce’s definition goes, but also “mediate” relations between us and our world, including ourselves, as has been elaborated by Vygotsky. We call the first the representational function of a sign and the second the epistemological function since in using signs we make distinctions, specify objects and relations, structure our observations, and organize societal and cognitive activity. The goal of this paper is, on the one hand, to develop a model in which both these functions appear as complementary and, on the other, to show that this complementarity is essential for the …