This study investigated students' interpretation of diagrams representing the human circulatory system. We conducted an interview study with three students aged 14-15 (Year 10) who were studying biology in a Hong Kong school. During the interviews, students were asked to interpret diagrams and relationships between diagrams that represented…

This study investigated the mental representations of metallic bonding and the malleability of metals held by three male students aged 14-15 (Year 10) who were attending a Hong Kong school. One student was selected by their chemistry teacher as representing each of the highest, the medium, and the lowest level of attainment in chemistry in a…

Studies analyzing explanations that have been constructed by science students have found that they were generally weak and lack necessary features. The goal of this study was to establish the competencies that one needs to construct a scientific explanation. Scientific explanations can be looked at in three ways, in terms of their function, form…

"Context-based courses" are increasingly used in an address to the major challenges that science education currently faces: lack of clear purpose, content overload, incoherent learning by students, lack of relevance to students, and lack of transfer of learning to new contexts. In this paper, four criteria for the design of context-based courses…

Although an understanding of nature of science is a core element in scientific literacy, there is considerable evidence that school and university students hold naive conceptions about it. It is argued that, whilst the failure to learn about nature of science arises from its neglect in formal science education, a major reason is the adherence to…

Some of the most pressing problems currently facing chemical education throughout the world are rehearsed. It is suggested that if the notion of "context" is to be used as the basis for an address to these problems, it must enable a number of challenges to be met. Four generic models of "context" are identified that are currently used or that may…

Framed by a "personal constructivist" perspective, this study analyses visitors' use of spontaneous memories in understanding different types of interactive exhibits, the nature and sources of the retrieved memories, and the way that visitors relate an exhibit analogically to memories of previous exhibits. One hundred and thirteen visitors (either…

A semi-structured interview was used in Brazil to enquire into the "notion of model" held by a total sample of 39 science teachers who were: employed in "fundamental" (6-14 years) and "medium" (15-17 years) schools; student science teachers currently doing their practicum; and university science teachers. Seven "aspects" of their notions of a…

Focuses on (n=39) Brazilian science teachers' perceptions of the role of models in science teaching and uses semi-structured interviews to inquire into the knowledge of models and modeling. Reports three groups of ideas: (1) the status and value of models; (2) the influences that inform the translation of these general ideas; and (3) responses to…

Interviews visitors at the Australian National Science and Technology Center. Reports that when using an exhibit, visitors experience a reminder of a similar experience that forms the basis for interpreting the exhibit. Proposes a model for "personal awareness of science and technology" (PAST) which is used to interpret learning results from…

Reviews the role of modeling in science teaching and learning. Investigates the knowledge and skills that science teachers think are needed to produce a model successfully using input from (n=39) Brazilian serving science teachers. (Contains 64 references.) (Author/YDS)

If science education is to be related as closely as possible to science, then Thought Experiments (TEs) must play an appropriate part. Presents a typology of TEs with examples drawn from the history of physics and addresses their various uses in bringing about students' conceptual development. Finds appropriate use of TEs is lacking in physics…

Reports on four models that show a possible pattern of progression that may be related to individual acquisition of conceptual knowledge about electricity. Contains 45 references. (DDR)

It is argued that a central role for models and modelling would greatly increase the authenticity of the science curriculum. The range of ontological states available for the notion of "model" is outlined, together with the modes available for their representation. Issues in the selection of models for and the development of modelling skills…

Investigates the mental models that people construct about magnetic phenomena. Involves students, physics teachers, engineers, and practitioners. Proposes five models following a progression from simple description to a field model. Contains 28 references. (DDR)