Students' mental models of the environment

What are students' mental models of the environment? In what ways, if any, do students' mental models vary by grade level or community setting? These two questions guided the research reported in this article. The Environments Task was administered to students from 25 different teacher‐classrooms. The student responses were first inductively analyzed in order to identify students' mental models of the environment. The second phase of analysis involved the statistical testing of the identified mental models. From this analysis four mental models emerged: Model 1, the environment as a place where animals/plants live—a natural place; Model 2, the environment as a place that supports life; Model 3, the environment as a place impacted or modified by human activity; and Model 4, the environment as a place where animals, plants, and humans live. The dominant mental model was Mental Model 1. Yet, a greater frequency of urban students than suburban and rural students held Mental Model 3. The implications to environmental science education are explored. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 327–348, 2007     

Learning molecular behaviour may improve student explanatory models of the greenhouse effect

We assessed undergraduates’ representations of the greenhouse effect, based on student-generated concept sketches, before and after a 30-min constructivist lesson. Principal component analysis of features in student sketches revealed seven distinct and coherent explanatory models including a new Molecular Details model. After the lesson, which described the invisible molecular behaviour of gases, this group (n = 164) produced significantly more expert-like representations of the greenhouse effect, and included fewer novice ideas. The key behaviour that greenhouse gases emit radiation in random directions is new to most students and directly counters common explanations involving reflection and ‘trapping’ of radiation in the atmosphere. Thus, learning molecular behaviour of greenhouse gases may help students replace non-expert explanatory models. This Molecular Details model has not been previously identified, and is unlikely to have emerged from human evaluation of student sketches alone. When teaching the greenhouse effect, we propose that interventions explicitly incorporate greenhouse gas behaviour.     

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.     

Drops of water and of soap solution: Students' constraining mental models of the nature of matter

This study investigates how 25 junior high school students employed their bodies of knowledge and responded to problem cues while individually performing a science experiment and reasoning about a drops phenomenon. Line‐by‐line content analysis conducted on students' written ad hoc explanations aimed to reveal students' concepts and their relations within their explanations, and to construe students' mental models for the science phenomenon based on level of specification, models' correspondence with scientific claims, macro versus micro view of matter, and type of evidence used. We then inferred four types of knowledge representations for the nature of matter. Findings are discussed in terms of implications for science teaching. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 970–993, 2004     

Kindling fires: examining the potential for cumulative learning in a Journalism curriculum

This study investigated context-dependency of learning as an indicator for students' potential to continue learning after graduation. We used Maton's theoretical concepts of ‘cumulative’ and ‘segmented’ learning, and ‘semantic gravity’, to look for context-independent learning in students' assessments in a Journalism curriculum. We postulated whether the curriculum constrained or enabled cumulative learning. Students' responses to assessments were coded by their degree of context-dependency, or semantic gravity. We found that, firstly, students are overly successful in producing context-dependent answers but struggle to deliver context-independent responses. Secondly, students were not effective when they used higher level knowledge principles without the foundation of lower level ones. Lastly, the marking criteria were encouraging markers to reward context-dependent answers over context-independent ones. This study has implications for educators interested in curriculum design that enables cumulative learning in discipline specific contexts.     

Factor Analysis of Drawings: Application to college student models of the greenhouse effect

Exploratory factor analysis was used to identify models underlying drawings of the greenhouse effect made by over 200 entering university freshmen. Initial content analysis allowed deconstruction of drawings into salient features, with grouping of these features via factor analysis. A resulting 4-factor solution explains 62% of the data variance, suggesting that 4 archetype models of the greenhouse effect dominate thinking within this population. Factor scores, indicating the extent to which each student's drawing aligned with representative models, were compared to performance on conceptual understanding and attitudes measures, demographics, and non-cognitive features of drawings. Student drawings were also compared to drawings made by scientists to ascertain the extent to which models reflect more sophisticated and accurate models. Results indicate that student and scientist drawings share some similarities, most notably the presence of some features of the most sophisticated non-scientific model held among the study population. Prior knowledge, prior attitudes, gender, and non-cognitive components are also predictive of an individual student's model. This work presents a new technique for analyzing drawings, with general implications for the use of drawings in investigating student conceptions.     

Children's Concepts of the Shape and Size of the Earth,Sun and Moon

Children's understandings of the shape and relative sizes of the Earth, Sun and Moon have been extensively researched and in a variety of ways. Much is known about the confusions which arise as young people try to grasp ideas about the world and our neighbouring celestial bodies. Despite this, there remain uncertainties about the conceptual models which young people use and how they theorise in the process of acquiring more scientific conceptions. In this article, the relevant published research is reviewed critically and in-depth in order to frame a series of investigations using semi-structured interviews carried out with 248 participants aged 3–18 years from China and New Zealand. Analysis of qualitative and quantitative data concerning the reasoning of these subjects (involving cognitive categorisations and their rank ordering) confirmed that (a) concepts of Earth shape and size are embedded in a ‘super-concept’ or ‘Earth notion’ embracing ideas of physical shape, ‘ground’ and ‘sky’, habitation of and identity with Earth; (b) conceptual development is similar in cultures where teachers hold a scientific world view and (c) children's concepts of shape and size of the Earth, Sun and Moon can be usefully explored within an ethnological approach using multi-media interviews combined with observational astronomy. For these young people, concepts of the shape and size of the Moon and Sun were closely correlated with their Earth notion concepts and there were few differences between the cultures despite their contrasts. Analysis of the statistical data used Kolmogorov–Smirnov Two-Sample Tests with hypotheses confirmed at K–S alpha level 0.05; r_s : p?<?0.01.     

Students' Perceptions of their Learning Outcomes

Abstract

This paper indicates students' perceptions of their learning outcomes, identified through group consultations in the author's University. These student generated outcomes were strongly orientated towards personal and professional skills and qualities, and the listing of them is compared to existing models of ‘transferable skills’. This might be of particular interest in the light of recent concerns about ‘graduateness’. The list was subsequently used as the basis for a questionnaire survey of students, and the findings of this survey are briefly reviewed. The student generated list differs in two main ways from the existing skills models reviewed. It is more context specific and is more concerned with values.     

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.     

Writing for the discipline in the discipline?

This article explores the issue of students' writing skills in the discipline of Engineering and beyond. It is the result of a discussion between three academics from different discipline backgrounds: Teaching and Learning, the Humanities and Engineering. We start with a review of the strategies commonly used to address problems in students' academic writing skills, with an emphasis on the notions of ‘writing across the curriculum’ (WAC) or ‘writing in the disciplines’ (WID). Taking into consideration the issue of students' perception of their ‘real curriculum’ and the need to embed writing’ in the disciplines, we propose a strategy aimed at implementing an efficient teaching of writing skills targeted for a specific discipline. In so doing, we argue that the increasing recourse to independent Learning Development services decontextualises students' understanding of writing.     

Affective Teaching for Effective Learning: A Deleuzian pedagogy for the (corporate era and) Chinese context

In this article I explore the pedagogical value of Gilles Deleuze and Félix Guattari’s philosophical concepts for helping make an ‘event’ of thought, with a view towards fostering deep learning in Chinese students' learning theory and criticism in a second language. Paying attention to the qualitative role of bodies, humour and creativity alongside an expanded trans-personal concept of ‘educational life forms’ that stretches out to include an affective assemblage of inhuman elements (such as art and technology), I explore how Deleuze and Guattari’s philosophical models provide a ethical alternative to corporate, Confucian and Cartesian models otherwise inhibiting students and teachers in the modern Sino-international university context.     

What Is Inside the Earth?

This article studies the conceptions of the interior of the Earth held by Portuguese elementary school children and senior citizens. Several studies were conducted regarding conceptions related to Earth sciences, such as rocks, minerals, earthquakes geological time, and Earth structure. Most of these studies involved students enrolled in compulsory education, some involved higher education students, several involved teachers, and only a few involved adults. The majority of the results showed that many misconceptions are held by people of all ages. Similar results were found in this study, as both children and senior citizens revealed several misconceptions. The research resorted to a questionnaire based on a drawing task so as to find out the way that children and senior citizens imagine the structure and composition of the interior of our planet. A comparison between children’s and senior citizens’ drawings was made, as well as a comparison between those drawings and the historical models of the internal structure of the Earth. We found that only a small number of children and even a smaller number of senior citizens recognize that the interior of the Earth is organized in concentric layers. They assume that soil and water are a common part of the internal composition of our planet. Similarities between the drawings and the historical models were identified, particularly similarities related to Gautier’s model, which accepts the possibility of the existence of life in the interior of the planet as it happens on its surface.     

Four case studies,six years later: Developing system thinking skills in junior high school and sustaining them over time

This study examines the process by which system thinking perceptions develop within the context of a water cycle curriculum. Four junior high school students undergoing an especially designed inquiry‐based intervention were closely observed before, during, immediately after, and 6 years after completing a year long systems‐based learning program. The employed research tools included observations, semi‐structured interviews, and a number of “concept viewing” tools (drawings, concept maps, and repertory grids). Out of the data, four distinct “stories,” each presenting a different way of constructing hydro system mental models, are described. The paper's main conclusion is that students develop their systems mental models and remember the learned material based on learning patterns that tend to remain unchanged over time. Consequently, in order to facilitate efficient and lasting construction of students' system models, learning experiences should harness these, and especially the meta‐cognitive learning pattern, which holds special significance for constructing systems. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 1253–1280, 2010     

‘They have different information about what is going on’: emotion in the transition to university

Most new students experience school to university transition as challenging. Students from backgrounds with little or no experience of higher education are most vulnerable in this transition, and most at risk of academic failure. Emotion appears implicated in the differential way in which first-generation students and students with family familiarity of university experience the transition. This article draws on the voices of first-year dental and oral hygiene students at a South African dental faculty regarding university transition experiences. It draws on the construct of capital and Archer's [(2002). Realism and the problem of agency. Journal of Critical Realism Alethia, 5(1), 11–20] understanding of ‘competing concerns’ to examine how emotion shapes students' experiences of university transition and how they position themselves with regard to these experiences. The article explicates the ways in which emotional commentary and classed locations intersect, exploring the extent to which this intersection shapes young people's framing of their concerns of ‘being a student’ and ‘becoming a dentist’. The article identifies aspects of the university's material and cultural environments which shape students' emotional responses and which consequently are implicated in the perpetuation of class-based differential life chances.     

Understanding metallic bonding: Structure,process and interaction by Rasch analysis

This paper reports the results of a survey of 3006 Year 10–12 students on their understandings of metallic bonding. The instrument was developed based on Chi's ontological categories of scientific concepts and students' understanding of metallic bonding as reported in the literature. The instrument has two parts. Part one probed into students' understanding of metallic bonding as (a) a submicro structure of metals, (b) a process in which individual metal atoms lose their outermost shell electrons to form a ‘sea of electrons’ and octet metal cations or (c) an all-directional electrostatic force between delocalized electrons and metal cations, that is, an interaction. Part two assessed students' explanation of malleability of metals, for example (a) as a submicro structural rearrangement of metal atoms/cations or (b) based on all-directional electrostatic force. The instrument was validated by the Rasch Model. Psychometric assessment showed that the instrument possessed reasonably good properties of measurement. Results revealed that it was reliable and valid for measuring students' understanding of metallic bonding. Analysis revealed that the structure, process and interaction understandings were unidimensional and in an increasing order of difficulty. Implications for the teaching of metallic bonding, particular through the use of diagrams, critiques and model-based learning, are discussed.     

The Draw‐An‐Environment Test Rubric (DAET‐R): exploring pre‐service teachers’ mental models of the environment

The use of drawings as representations of personal mental models or images is one method of analyzing personal beliefs. This article discusses the development of the Draw‐An‐Environment Test and Rubric (DAET‐R) for assessing the mental models or images of the environment held by pre‐service teachers. It also provides results of preliminary research using the DAET‐R to assess pre‐service teachers’ personal beliefs and understandings about the environment, as interpreted from their drawings. Results of this pilot study using the DAET‐R for scoring early childhood pre‐service teachers’ drawings of the environment suggest that the participants’ mental models of the environment are incomplete. Results of this study also show that the DAET‐R can provide information about pre‐service teachers’ beliefs about the environment useful to teacher educators in the development and delivery of environmental education.     

Early adolescents' and their parents' mental imagery in relation to perceived reading competence

This cross‐sectional survey study examined the relation between mental imagery (i.e., seeing images of a story ‘in the mind's eye’) and perceived self‐competence in reading. The study was conducted with a group of seventh‐grade to ninth‐grade students in the prevocational educational track of secondary schools in the Netherlands and their parents. Results showed a moderate relation between mental imagery and self‐competence beliefs, also after controlling for the quality of students' home literacy environment. Examination of gender differences revealed that girls outperformed boys in self‐competence beliefs. Furthermore, boys perceived themselves as better readers when their parents had higher mental imagery skills. No direct relation was found between parents' and adolescents' mental imagery skills. These findings imply that parents and teachers may need to be made aware of the importance of mental imagery strategies as it may enhance the reading experiences of boys as well as girls.     

Dewey's Conception of Interest and its Significance for Teacher Education

Many teachers in teacher education programs are cursorily introduced to Dewey's ‘epochmaking’ ideas on interest and effort through discussions based on the need for child‐centered pedagogies that utilize students' interests. Unfortunately, this strategy often tacitly encourages teachers to over‐rely on students' interests. In this paper, I recommend a way of introducing Dewey's conception of interest that avoids the common pitfall of over‐reliance on students' interests. I argue that if we focus on the changes Dewey made to the expression of his philosophy during a seventeen‐year period, we can help illuminate the force of his theory while protecting against unfortunate misinterpretations.