The nature of students’ informal science conceptions

Case studies have been constructed of primary school children's developing explanations of a range of air pressure phenomena. A range of conceptions relating to air pressure have been identified, and insights gained concerning the way these interrelate over time and over context. It was found that children are naturally generative in their construction of explanations, but that they use conceptions in quite complex and fluid ways. It is argued that naive conceptions maintain a valuable function as intuitive recognition elements that feed more sophisticated conceptions, and that generating a satisfying explanation for a phenomenon can involve having access to a range of interrelated conceptions. A range of contextual factors were identified, which influence the construction of explanations, and can act as barriers to the application of scientific conceptions.     

Understanding Early Elementary Children's Conceptual Knowledge of Plant Structure and Function through Drawings

This study examined children''s drawings to explain children''s conceptual understanding of plant structure and function. The study explored whether the children''s drawings accurately reflect their conceptual understanding about plants in a manner that can be interpreted by others. Drawing, survey, interview, and observational data were collected from 182 students in grades K and 1 in rural southeastern United States. Results demonstrated the children held a wide range of conceptions concerning plant structure and function. These young children held very simple ideas about plants with respect to both their structure and function. Consistent with the drawings, the interviews presented similar findings.     

A Conceptual Change Approach to Learning Science

Summaries

English

Learning science is complex‐‐a student has at different times to acquire new information, reorganize existing knowledge and even discard cherished ideas. In addressing this issue, the analogy between individual learning and conceptual change in scientific disciplines has been fruitful in providing aspects of a suitableframework for analysing science learning. In this paper a model of learning as conceptual change is developed. It investigates the conditions under which an individual holding a set of conceptions of natural phenomena, when confronted by new experiences will either keep his or her conceptions substantially unaltered in the process of incorporating these experiences, or have to replace them because of their inadequacy. The model illuminates the importance of addressing an individual's existing conceptions. It also pinpoints the importance of an individual's metaphysical commitments in influencing scientific learning.     

The Relation between the Frequency and the Universality of Teaching Activities

ABSTRACT

The author empirically tests the conceptual model of academic socialization, which suggests that parental cognitions about schooling influence parenting practices and child outcomes during the transition to school (Taylor, Clayton, &; Rowley, 2004). More specifically, the author examines associations among parents’ conceptions of school readiness, transition practices, and children's academic achievement in reading and mathematics from kindergarten through Grade 1 using data from the Early Childhood Longitudinal Study-Kindergarten Cohort (N = 12,622). A latent growth curve model was estimated, and results show that parents’ school readiness beliefs were positively associated with children's beginning achievement and growth. Parents’ transition practices were positively associated with children's achievement at the onset of kindergarten. Parents’ beliefs also positively predicted their use of transition practices. The analysis largely confirmed the conceptual model of academic socialization. Furthermore, findings suggest that early interventions seeking to change parenting practices should consider parents’ school readiness beliefs and expectations.     

Four- to six-year-old children's conceptions of the mechanism of rainfall

The purpose of this study was to describe four- to six-year-old children's understandings of the mechanism of rainfall and to reveal possible differences due to age. A total of 22 children participated in the study (mean age = 60.4 months; range 48–73 months), including 14 boys and 8 girls, all from middle-SES families. To reveal children's understanding of the mechanism of rainfall, semi-structured interviews were conducted using a set of interview questions. Children were individually interviewed, and interviews were audio-taped and transcribed. The constant comparative method was used to analyze the transcribed audio tapes. A framework of codes was developed based on previous studies of children's understanding of the mechanism of rainfall. This partial framework of codes served as the basis for describing children's conceptual understandings of the mechanism of rainfall. A nonparametric statistical test was used to test for age differences in children's conceptions of the mechanism of rainfall. The results indicated that older preschool children were more likely to have synthetic or naturalistic conceptions than the younger children. Implications of the findings for instructional practices in early childhood classrooms are discussed.     

Scientific concept development in Solomon Island students: a comparative analysis

Abstract

This paper summarises the results of an investigation of Solomon Islands secondary school students’ interpretations of three concepts: vision, animals and burning. Internal comparisons among the three areas and external comparisons with findings reported from other societies are made. While some support is given to the idea that children from different cultures may develop similar conceptions, this support is qualified and is shown to be dependent on the type of phenomenon investigated. The degree to which there is immediate personal experience of phenomena may be important, as may the presence or absence of culturally supported explanations. The commonly reported resistance of children's conceptions to school science teaching is also shown not to be universally true. The article ends with a plea for caution in the cross‐cultural extrapolation of research into children's conceptions.     

Drawings as Representations of Children's Conceptions

Drawings are often used to obtain an idea of children's conceptions. Doing so takes for granted an unambiguous relation between conceptions and their representations in drawings. This study was undertaken to gain knowledge of the relation between children's conceptions and their representation of these conceptions in drawings. A theory of contextualization was the basis for finding out how children related their contextualization of conceptions in conceptual frameworks to their contextualization of drawings in pictorial convention. Eighteen children were interviewed in a semi‐structured method while they were drawing the Earth. Audio‐recorded interviews, drawings, and notes were analysed to find the cognitive and cultural intentions behind the drawings. Also, even children who demonstrated alternative conceptions of the Earth in the interviews still followed cultural conventions in their drawings. Thus, these alternative conceptions could not be deduced from the drawings. The results indicate that children's drawings can be used to grasp children's conceptions only by considering the meaning the children themselves give to their own drawings.     

Speed,education and children as pedestrians: a cognitive change approach to a potentially dangerous naive concept

Previous studies have indicated that children, in the pedestrian accident‐prone age range of 4‐9 years, hold a range of naive concepts of speed, which could be a possible causal factor in determining young children's vulnerability when interacting with traffic. This research reports an attempt to bring about conceptual change in children's concept of speed via the teaching of the science of speed. The course incorporated elements of an integrated educational experience and was specifically designed to involve the minimum of teacher preparation and the maximum of hands‐on experiences. The results indicate that it may indeed be possible to modify naive conceptions via teaching that targets particular concepts.     

Children's conceptions of color

An examination of children's notions about light and visual phenomena shows the existence of mental models, that is to say, ways of thinking that are consistent and pervasive. These naive conceptual schemes, used by different children to explain similar phenomena, determine the kinds of responses given by the children in problem-solving situations. In this article we study children's ideas about colored objects and colored shadows, with special attention to the ways in which these ideas are organized into mental models. The elucidation of these models provides valuable instructional tools that serve to assess and to confront students' naive conceptions. This work was carried out in a science museum at the site of interactive exhibits that show unexpected effects. Children who visited the museum were engaged in problem-solving situations that involved predictions, explanations, and manipulations of the exhibit.     

Consistency of children's use of science conceptions: Problems with the notion of “conceptual change”

A study of primary school children's explanations of a range of phenomena concerning air pressure revealed considerable fluidity in their use of conceptions. A measure of consistency was developed and applied to children's written and oral explanations in a range of contexts. While the results showed a general trend with age toward more abstract, ‘generalizable’ conceptions, the notion of parsimony was found to be problematic on a number of levels. Children do not apply a single conception to a phenomenon, but rather operate with multiple conceptions in their explanations, complicating the whole notion of consistency. Moreover, as they develop and apply more advanced conceptions, children inevitably display temporary reductions in consistency. These findings suggest a rather more complex model of conceptual advance than implied in the literature on ‘conceptual change’. Specializations: children's science explanations, conceptual change, primary science teacher education, physics education.     

The impact of a science demonstration on children's understandings of air pressure

Constructivist theory guided our investigation of the impact of a scientific demonstration on children's understandings of air pressure. Primary data sources included children's written and oral interview responses. For one-third of the children, the demonstration reinforced previous understandings. These children appeared to utilize their prior knowledge and experiences to construct the purpose and meaning of the demonstration. Therefore, these children's understandings were not sufficiently challenged by observing the demonstration or the social interactions that occurred. Recommendations for using demonstrations to promote children's scientific understandings are presented herein.     

Understanding genetics: Analysis of secondary students' conceptual status

This article explores the conceptual change of students in Grades 10 and 12 in three Australian senior high schools when the teachers included computer multimedia to a greater or lesser extent in their teaching of a genetics course. The study, underpinned by a multidimensional conceptual‐change framework, used an interpretive approach and a case‐based design with multiple data collection methods. Over 4–8 weeks, the students learned genetics in classroom lessons that included BioLogica activities, which feature multiple representations. Results of the online tests and interview tasks revealed that most students improved their understanding of genetics as evidenced in the development of genetics reasoning. However, using Thorley's (1990) status analysis categories, a cross‐case analysis of the gene conceptions of 9 of the 26 students interviewed indicated that only 4 students' postinstructional conceptions were intelligible–plausible–fruitful. Students' conceptual change was consistent with classroom teaching and learning. Findings suggested that multiple representations supported conceptual understanding of genetics but not in all students. It was also shown that status can be a viable hallmark enabling researchers to identify students' conceptual change that would otherwise be less accessible. Thorley's method for analyzing conceptual status is discussed. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 205–235, 2007     

Concepts of a higher hierarchical level require more dual situated learning events for conceptual change: A study of air pressure and buoyancy

This article examines the process of students' conceptual changes in respect of air pressure and buoyancy as a result of instructing with the Dual Situated Learning Model. The dual situated learning events of this model were designed according to the students' ontological viewpoint on the science concepts as well as on the nature of these concepts. Results demonstrated that the notion of buoyancy required more dual situated learning events for conceptual change to occur than that for air pressure. Instead of attributing the difficulty involved in conceptual change to the mismatch of ontological category of the concepts, the author proposes that the hierarchical level of the scientific concepts would determine how easy or difficult it is to bring out a conceptual change. Concepts of higher hierarchical level subsume more essential underlying concepts, thus making it more difficult for conceptual changes to occur.     

The role of discursive resources in science talk

Tao, Oliver, and Venville’s paper addresses a debate between two hypotheses of children’s development of conceptual understandings of the Earth. The authors aim to investigate whether culture influences students’ conceptions of the Earth. However, one questionable assumption shared among conception and conceptual change studies is that researchers can identify children’s mental models, through their discourse, to explain their conceptions of scientific phenomena. In this commentary, I challenge this assumption by looking closely at various interview data and examining different dimensions of interview discourse about the Earth. Based on my findings, I suggest that instead of seeing science talk as representations of mental models, we look at children’s science talk as discursive practices mediated by the immediate social situation and the broader social milieu.     

Developing Conceptual Understanding in Primary Science

Over the past 30 years research has generated considerable insights into children's ideas related to science and the process of conceptual change. Using this knowledge to inform teaching is not straightforward. This paper outlines some general guidelines for teaching for conceptual development and then focuses on the introduction of new ideas in the primary classroom. Two pieces of teaching, about light and electricity, are used to exemplify how relevant ideas of science can be introduced and related to children's thinking and to everyday phenomena. The role of the teacher in 'talking ideas into existence' is discussed and directions for future research identified.     

Conceptual change and killer whales: constructing ecological values for animals at the Vancouver Aquarium

Changes in the mode of presenting the killer whales within the aquarium required both marine mammal and interpretation staff to change their conceptions of the role and value of killer whale ‘performances’. The process of change that staff underwent is similar to, and can be facilitated by understanding of, conceptual change processes among learners of science. Similar constructivist strategies of conceptual challenge can guide the staff's interaction with visitors, as an attempt is made to help visitors see the ecological relationships of wild and captive killer whales.     

Conceptions and Contexts: On the Interpretation of Interview and Observational Data

Research within a constructivist approach often relies on interview data, which are used to reveal beliefs held by the interviewee or to expose conceptions or conceptual structures that are supposed to reside within the interviewee. From a sociocultural perspective, severe criticism has been leveled against the neglect of the problems of inferring conceptions held by a participant from what is uttered in an interview. Utterances should be looked upon as cultural tools used to realize discursive practices, rather than as propositions mirroring mental entities. It is argued that the clinical interview, often used by constructivists, disregards the impact of a situation and discursive norms with regard to what is uttered in a conversation. Here, it is argued that by taking into account an interviewee's conceptions of the situation, as well as of the subject matter being talked about, some sort of a bridge between the methodological standpoints of constructivism and sociocultural theory can be formed. It is proposed that utterances should be regarded as actions, and thus the problem of ascribing meanings to behavior is in focus, that is, how a series of behaviors can be regarded as an intentional action. It is argued that by means of such an approach, it is possible to make inferences about conceptions and conceptual structures much in the same way as is done in research on conceptual change. However, this means that utterances cannot just be “read off.” The interviewee's aims, conceptions of the subject matter talked about, as well as the interviewee's conceptions of the situation to hand must be taken into account. A reinterpretation of data reported by Andrea diSessa and Bruce Sherin is used as an illustration.     

Reading self‐concepts and task choices for children with reading difficulties

Abstract

This project examined the personal and the social basis of children's self‐concepts about reading. Study 1 [N= 55] was a correlational study. Results suggest a stronger personal than social basis for children's self‐concepts about reading. In particular, children made stronger comparisons among content areas than gender groups. Study 2 [N= 18] was an intervention study. The focus was on the personal basis of self‐concepts, for children with reading difficulties. Results showed that self‐concepts were responsive to the intervention, with associated change in task choices. Findings support a self‐categorization approach to understanding children's self‐concepts, and imply that this approach would be useful in motivating children about reading.

Reading is regarded as integral to general living skills and is central to children's learning across many areas of schooling. This means that we need to understand more about the self‐concepts that motivate children to take up and persist with reading activities. H is a particularly pressing issue for children who experience difficulties with reading. This project therefore examined the personal and social basis of children's self‐concepts about reading. The focus was the salience of children's personal and social categorisations about reading that underpin reading self‐concepts and associated choices of reading tasks.     

Young black children and science: Chronotopes of narratives around their science journals

We explored 30 Black Kindergarten‐2nd grade students' spoken narratives around pages of their science journals that the children selected as best for showing them as scientists. Because in all narratives, space–time relationships play an important role not only in situating but also in constituting them, we focused on such relationships using Bakhtin's (1981) construct of chronotopes. Our chronotopical analysis aimed at fleshing out the temporal and spatial features that were present in the children's journal pages, and in the children's ways of talking both about these features and about being scientists. Our goal was to better understand ways in which African‐American children identify with science and scientists in particular contexts: an interview with an adult who had visited their class throughout that year and a class where they were offered various opportunities to engage with science. Using six cases that maximized the variety of understandings we could develop vis‐à‐vis our research question, we show how the children's narratives were filled with differing space–time relationships in which the children found ways to showcase their agency. Thus, we provide insights into how the children authored relationships with science and scientists, negotiated the past with the present and possible future, and contextualized their narratives within various time‐spaces that had meaning for them. Moreover, multiple people populated the children's chronotopes and became intertwined with the space–time relationships that underlined their conceptions of themselves vis‐à‐vis science and scientists. Despite the varied conceptions of science and scientists that the children portrayed, their narratives communicated a high level of confidence in being able to do science and be scientists, and initiative in learning. The children's narratives were filled with hope, “able‐ness,” knowledge, affect, and possibility. These findings point to several considerations for practice. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 568–596, 2012     

Parallelism in the development of children's ideas and the historical development of projectile motion theories

A study of the development of children's conceptions with respect to projectile motion was carried out in Ukraine and Israel, with the participation of 1017 subjects in grades 3 to 12. The purpose of the research was to investigate the fundamental hypothesis of genetic epistemology with respect to concepts of motion. The fundamental hypothesis states that the development of children's concepts of nature parallel the historical development of the concepts. It was found that the development of children's concepts of motion proceeds by stages, with the concepts at each stage parallel to a corresponding historical stage. A mathematical model was constructed to describe development by stages quantitatively. The theoretical model gave an excellent fit to the empirical data, and this supports the hypothesis of parallelism. The two‐country research made it possible to compare the effects of quite different school science curricula upon the development of children's concepts.