Originally presented as the author's dissertation--Universität München, 2004. / Includes bibliographical references (p. 235-255).

Magister Educationis - MEd (Mathematics and Science Education) / A large percentage of South African learners held inadequate or alternative conceptions that might hinder them from developing a valid understanding of various scientific concepts and generalizations. This study explored the conceptions of Senior Phase learners on magnetism, chemical change of substances and the environment. More explicitly, the study attempted to investigate the influence of the learners" age, language and gender issues on their understanding of these scientific concepts. The study is underpinned by socio-cultural constructivism as espoused by Vygotsky (1978). The research sample comprised 250 Senior Phase learners (grades eight and nine) from secondary schools in the Metro Central District in the Western Cape. The study used the following six research instruments for data collection: Science Achievement Test (SAT), Context Test, Cloze Test, Picture Test, Science Vocabulary Test and an interview schedule. The tests were administered to all the participants while the interview was conducted with six participants.This study was a descriptive research of a survey type and data was collected and analyzed using both quantitative and qualitative methods.The data collected was analyzed quantitatively using the Statistical Package for Sciences (SPSS) in order to obtain descriptive statistics that were used to explore the conceptions of senior phase learners in magnetism, chemical change substances and the environment in the Metro Central district while data from the tape recorder and notes taken during the interview, were analyzed qualitatively.

It locally contains or heaven, or hell; There’s no third place in’t. (Webster 1993) Husbandry in its original sense is a ‘being together’, based on dwelling in a particular place. There is an intricate connection between modern science and industrialised agriculture, both of which developed on the basis of particular values associated with Good Husbandry – those which focused on individual innovation, profit-related productivity, quantitative measurement, objective, ‘puritan’ truth and control of nature. Ideals of the earth as a ‘commonwealth’, and of traditional stewardship, were down-played. The writings of Francis Bacon provide an example of a positivist, pioneering attitude which has continued to underpin modern science. In retrospect, however, these ideals sound rather one-sided. Nature herself is not well represented in the modern science relationship. In this thesis, Virgil’s Georgics and Lucretius’ de rerum natura are used to derive a poetics of Being and of Husbandry, which applies not only to the world of poetry, but to events which underlie scientific research. Virgil’s use of verbs verifies that life’s activities are shared by all living things. Lucretius asserts that even inanimate atoms both exist in themselves and are creative. ‘To be’ can be visualised as a dynamic, balancing act between striving to stay in being and longing to engage creatively with another. The basis of this thesis is that a shaping of research towards good husbandry involves a fair relationship with nature, which in turn involves the acknowledgement in writing that nature is active, dynamic and a good collaborator. Husbandry defined as a continually unfolding third place between extremes or between self and other – this holistic, concentric definition – applies at all scales, all levels of experience. This work was derived from practice-led research involving the writing of poetry and therefore the findings exist in parallel as a sequence of poems.

Thesis (M.F.A.)--Rochester Institute of Technology, 2007. / Typescript. Includes bibliographical references (leaf 40).

I denna avhandling visar jag hur elever och lärare genomför NO-verksamhet i grundskolan. Avhandlingen illustrerar hur elevers frågor och uttryckta erfarenheter blir en del av ett etablerat ämnesinnehåll. Syftet med studien är att skapa förståelse för hur två agendor – varav den ena baseras på elevers deltagande och den andra baseras på ett etablerat ämnesinnehåll – orkestreras så att båda agendorna tillgodoses vid genomförandet av NO-verksamheten. Studien bygger på videoobservationer under NOlektioner i skolår 5-9. Analysen visar hur olika aktiviteter i genomförandet av ett NOprojekt orkestrerar elevers frågor och uttryckta erfarenheter med ett naturvetenskapligt innehåll. Analysen visar också hur naturvetenskapens karaktär, the Nature of Science (NOS), kommuniceras som följemening till instruktioner. Vidare illustrerar avhandlingen olika sätt att använda frågor för att överbrygga vetenskapliga och vardagliga sätt att kommunicera. Resultaten visar också olika roller som elevers erfarenheter antar i en NOverksamhet. Resultaten utgör en konkretisering av skolans naturvetenskap, the Nature of School Science (NOSS). Skolans naturvetenskapliga aktiviteter begripliggörs lämpligen om de betraktas utifrån sina egna syften och förutsättningar. I avhandlingen utvecklas begreppet NOSS för att lyfta fram sådana syften och förutsättningar såsom dessa framträder i aktiviteten. / This thesis investigates and considers how students and teachers realize school science activities. Students’ questions and accounts of their experiences as they become part of an established science content form the focus of this work. Its purpose is to provide an understanding of how two agendas –one, based on students’ participation and the other, based on the already established science content –are orchestrated so that both are accounted for. The empirical work is based on video-recorded observations in science classrooms. The findings show how different activities in the accomplishment of a school science project orchestrate students’ questions and accounts of experiences with the science content. The findings also show how the nature of science (NOS) is communicated as a by-product of instruction. In addition, different uses of questions for bridging science and everyday ways of communicating are shown in the results. The findings also indicate the different roles that students’ experiences acquire in a school science activity. These results should be seen as a step towards a definition of the nature of school science (NOSS). School science activities become intelligible if we consider them from a basis of their own purposes and prerequisites. The concept of NOSS is described to elicit such purposes and prerequisites as they become apparent in the activity.

Anotation: In this graduation these sis processed theoretical principle of subject horse and his breeding, analisis RVP and textbook for nature study and science use relationship betwen subjects and analysis of realization some of the schemes in practises.

Laboratory work is considered important for student achievements in science education. This thesis will contribute with increased knowledge about lab work in science education in Swedish secondary school. The main purposes are to describe secondary school science teachers’ objectives for lab work and to describe how these objectives are implemented during laboratory exercises. The thesis shows and discusses, from a teacher perspective, the complexity involved in lab work.The thesis is comprised of four papers based on empirical analysis of teacher interviews, laboratory manuals and laboratory exercises. Two interview studies identified which objectives the teachers consider important and compared these to international studies. Two case studies identified how the teachers’ objectives are put forward during lab work and what factors are important for the implementation of objectives.The results from the interview studies show that Swedish secondary school science teachers express general objectives including the development of students’ understanding of concepts and phenomena, of their interest in science and ability to think and reflect upon labwork. This is to a large extent in accordance with objectives identified in international studies. However, when the teachers describe specific laboratory exercises they emphasize the activity and the laboratory skills. Some of the teachers describe lab work that includes scientific inquiry but not specifically, knowledge about the nature of science. Scientific inquiry was mostly used to develop interest in science and not to develop knowledge about how to systematically investigate phenomena in nature. The teachers express their objectives differently in different contexts. The laboratory manuals mostly put forward objectives to help students identify objects and phenomena and to learn facts, which is not always in accordance with the teachers objectives. Results from the case studies show that the teachers’ objectives do not always correspond to the students’ views of important things to learn. It is not obvious that lab work in itself make students understand a certain scientific content, they need help to “see what is intended to be seen”. Interactions between the teacher and the students are important to help students perceive the teacher’s objectives. Many interactions have a starting point in the laboratory manuals, and if the objectives in the manual correspond to the teacher’s objectives it makes it easier for both the students and the teacher to reach the intentions for the laboratory exercise. Implications for science teaching are discussed. / Att laborationer har en naturlig och central plats i naturvetenskaplig undervisning håller de flesta med om men hur stor vikt svenska grundskollärare lägger på det laborativa arbetet och dess betydelse för elevers lärande i naturvetenskap är inte klarlagt. Denna avhandling ska ge ytterligare kunskap om det laborativa arbetet i svensk grundskola. Avhandlingen har två huvudsyften. Det ena är att ge en beskrivning av de mål för laborativt arbete som lärare i den svenska grundskolans senare år anser viktiga. Det andra är att beskriva hur laborationer som genomförs i skolpraktiken förverkligar de uppsatta målen. Avhandlingen uppmärksammar och diskuterar det laborativa arbetets komplexitet utifrån ett lärarperspektiv.De fyra delstudierna bygger på empiriska undersökningar av intervjuer med lärare, deras laborationsinstruktioner och av det laborativa arbetets genomförande. I två intervjustudier analyseras vilka mål som anses viktiga och hur dessa förhåller sig till internationell forskning om mål med laborationer. I två fallstudier analyseras hur lärarens mål framträder under det laborativa arbetet och vilka faktorer som har betydelse för hur målen implementeras.Resultaten från intervjustudierna visar bland annat att lärare i den svenskagrundskolan uttrycker generella mål för laborativt arbete som att eleverna skautveckla sin förståelse av naturvetenskapliga begrepp och fenomen, sitt intresse för naturvetenskap, och sitt reflekterande över laborativt arbete. Detta överensstämmer i stor utsträckning med mål som framträder i internationella undersökningar. När lärarna talar om specifika laborationer betonar de istället själva aktiviteten och de laborativa färdigheterna. Lärarna uttrycker således sina mål olika i olika sammanhang. Lärarna erbjuder laborationer där undersökande arbete förekommer men de utnyttjar inte laborationerna till att skapa förståelse av naturvetenskapens karaktär. Det undersökande arbetet utnyttjas främst för att öka intresset för naturvetenskap och inte för att ge kunskap om metoder för naturvetenskapliga undersökningar. Laborationsinstruktionerna innehåller i stor utsträckning mål för att hjälpa elever att identifiera objekt och att lära sig fakta. Instruktionernas mål stämmer inte alltid överens med lärarnas mål med laborationerna. Resultaten från fallstudierna visar att lärarna ofta har fler mål med laborationerna än de som kommer fram under genomförandet och att lärarnas mål inte alltid överensstämmer med vad eleverna uppfattar som viktigt. Det är inte självklart att det laborativa arbetet i sig medför att eleverna förstår ett visst naturvetenskapligt innehåll, eleverna behöver hjälp att ”se vad som är avsett att se”. Interaktionerna mellan lärare och elever och mellan elever och elever är mycket viktiga för att eleverna ska uppfatta målen. Mycket av interaktionerna tar sin utgångspunkt i laborationsinstruktionen. Om målen i denna överensstämmer med de mål läraren vill eftersträva underlättar det både för läraren och för eleverna. I avhandlingen diskuteras konsekvenser för undervisningen.

L’enseignement de la science présente plusieurs lacunes : des lacunes en lien avec le contenu scolaire, les activités scolaires et la nature de la science. Qu’en est-il de l’enseignement de la science au Québec par rapport à ces lacunes ? Pour répondre à ces questions, nous avons assimilé l’enseignement de la science à l’enseignement de la modélisation. En effet, « faire la science » revient essentiellement à une activité de modélisation, les scientifiques passent la majorité du temps à construire, à tester, à réviser et à utiliser des modèles scientifiques. Il est important de souligner que cette activité permet, d’une part, de construire les connaissances scientifiques et, d’autre part, de comprendre la nature de la science. Ainsi, l’objectif de cette thèse est d’analyser l’enseignement de la modélisation au Québec en vue de déterminer ses lacunes. Pour préciser cet objectif, nous avons choisi le cas particulier du modèle particulaire, car il est fondamental à l’univers matériel. Pour atteindre les objectifs de cette recherche, nous avons procédé en trois étapes. Dans la première étape, nous avons élaboré des critères de l’enseignement de la modélisation et de l’enseignement du modèle particulaire en s’appuyant sur plusieurs travaux de recherches effectués pour améliorer l’enseignement de la modélisation. Dans la deuxième étape, nous avons décrit l’enseignement de la modélisation tel que présenté dans le programme de formation au secondaire et l’enseignement du modèle particulaire tel que présenté dans le curriculum formel et auprès de certains enseignants. À la troisième étape, cette description a été analysée compte tenu des grilles élaborées à la première étape, ce qui a permis d’identifier plusieurs lacunes dans l’enseignement de la modélisation et l’enseignement du modèle particulaire. Parmi ces lacunes, nous avons relevé l’absence de construction des modèles par les élèves et l’absence du principe de différenciation entre la réalité et le modèle qui l’explique. Ces deux lacunes sont également présentes dans le cas du modèle particulaire. Les élèves ne sont pas amenés à le construire. Son utilisation est inexistante dans le programme de formation et dans la progression des apprentissages au premiers cycle, elle est ambiguë dans les manuels du premier cycle et partielle au deuxième cycle. Les activités qui lui sont associées sont essentiellement des activités de mémorisation et de compréhension des concepts. Ces activités, qui ne sont pas des activités de modélisation, ne permettent pas vraiment de « faire la science » ni de comprendre la nature des modèles et de la science en général. De plus, les énoncés du modèle particulaire sont partiels de sorte que le modèle particulaire ne semble pas une idée centrale à laquelle plusieurs concepts sont reliés. Ces derniers sont plutôt éclatés et décousus. Pour remédier à ces lacunes, plusieurs recommandations ont été proposées. / The teaching of science has several deficiencies : deficiencies related to content, activities and to the nature of science itself. What about the teaching of science in Quebec in relation to those deficiencies? To answer those questions, we have equated the teaching of science with the teaching of modeling. Indeed, "doing science" essentially amounts to a modeling activity. Scientists spend most of their time building, testing, revising and using scientific models. It is important to emphasize that this activity allows, on one hand, to build scientific knowledge and, on the other hand, to understand the nature of science. Thus, the objective of this thesis is to analyze the teaching of modeling in Quebec in order to determine its weaknesses. To clarify this objective, we have chosen the particular case of the particle model, because it is fundamental to the material universe. To achieve the objectives of this research, we proceed in three stages. In the first stage, we developed criteria for the teaching of modeling and the teaching of the particle model based on several research works carried out to improve the teaching of modeling. In the second stage, we described the teaching of modeling as presented in the training program and the teaching of the particular model as presented in the formal curriculum and with certain teachers. In the third stage, this description was analyzed taking into account the grids developed in the first stage, which made it possible to identify several weaknesses in the teaching of modeling and the teaching of the particle model. Among these shortcomings, we noted the absence of construction of the models by the pupils and the absence of the principle of differentiation between reality and the model which explains it. These two deficiencies are also present in the case of the particle model. The pupils do not have to build it. Its use is nonexistent in the training program and in the progression of learning in the first cycle. It is also ambiguous in the manuals of the first cycle and partial in the second cycle. The activities associated with it are essentially activities of memorizing and understanding concepts. These activities, which are not modeling activities, do not really make it possible to “do science” or to understand the nature of models and the nature of science in general. Furthermore, the statements of the particle model are partial so that the particle model does not seem to be a central idea to which several concepts are linked. The latter are rather fragmented and disjointed. To remedy these shortcomings, several recommendations have been proposed.

Le mémoire vise à proposer une épistémologie pragmatique de la science scolaire à l’école primaire. Un défaut de compréhension de la nature de la science pourrait en effet justifier en partie les difficultés de l'enseignement des sciences par démarche d'investigation. Une étude des représentations de la science chez les enseignants et futurs enseignants confirme qu’ils n‘en ont pour la plupart qu‘une vision assez floue, relevant majoritairement d'une forme d'empirisme naïf. Un jeu opératoire de critères de scientificité adapté au contexte de l’école est développé dans une approche "bottom-up" partant des pratiques de classe effectives. Sa capacité à discriminer pratiques scientifiques et non scientifiques est discutée, de même que les implications didactiques et épistémologiques de son utilisation. Il est en particulier possible d‘en déduire des définitions évolutives d‘une science scolaire normative mais subsidiaire par rapport à la “science des scientifiques”. Cet outil épistémologique s’avère bien reçu par les enseignants auxquels il a été présenté. Le test en situation de différentes stratégies pédagogiques fait apparaître que les plus efficaces pour l'appropriation de critères de scientificité ajoutent à la démarche d’investigation une composante épistémologique explicite. Certains éléments de méthode scientifique peuvent être travaillés dès la Grande Section de maternelle (5-6 ans) : des élèves ayant vécu des démarches d’investigation s’avèrent capables de revendiquer la primauté de l’expérience, mais aussi de mettre en œuvre des tests relatifs à plusieurs critères de scientificité et de s‘approprier les rudiments de la modélisation scientifique. / The purpose of this thesis is to propose a pragmatic epistemology of school science in primary school. Indeed, some of the difficulties encountered by inquiry-based science education may be attributed to a lack of understanding of the very nature of science. A survey on the perception of science by incumbent teachers and teachers in training confirms that most of them have a relatively vague vision grounded in a form of naive empiricism. A practical set of criteria of scientificity adapted to the school context is developed through a “bottom-up” approach based on actual classroom practices. Its efficiency at discriminating scientific and non-scientific practices is discussed, as well as the didactical and epistemological implications of its use. It is thus possible to deduce evolutive definitions of a school science that is normative yet subordinated to the “science of scientists”. Teachers responded positively to this epistemological tool when it was presented to them. Among the different teaching strategies tested in a classroom, the most efficient for the acquisition of criteria of scientificity were those which supplemented the inquiry process with an explicit epistemological component. Some elements of scientific method can be introduced as early as kindergarten (5-6 y.o) : after experimenting with inquiry processes, pupils have proved able not only to claim the primacy of experiment but also to run tests related to different criteria of scientificity and acquire the basics of scientific modeling.