Constantinos P. Constantinou

Preparing teachers to teach physics and physical science by inquiry

In physics, neither courses for majors nor for non-majors provide the kind of preparation required for teaching physics or physical science by inquiry. Science methods courses cannot help teachers develop the depth of understanding needed for this type of teaching. Since appropriate preparation is not available through the standard curriculum, a practical alternative is to offer special physics courses for teachers.

Comparing the influence of physical and virtual manipulatives in the context of the Physics by Inquiry curriculum: The case of undergraduate students’ conceptual understanding of heat and temperature

We compare the effect of experimenting with physical or virtual manipulatives on undergraduate students’ conceptual understanding of heat and temperature. A pre–post comparison study design was used to replicate all aspects of a guided inquiry classroom except the mode in which students performed their experiments. This study is the first on physical and virtual manipulative experimentation in physics in which the curriculum, method of instruction, and resource capabilities were explicitly controlled. The participants were 68 undergraduates in an introductory course and were randomly assigned to an experimental or a control group. Conceptual tests were administered to both groups to assess students’ understanding before, during, and after instruction. The result indicates that both modes of experimentation are equally effective in enhancing students’ conceptual understanding. This result is discussed in the context of an ongoing debate on the relative importance of virtual and real laboratory work in phys...

The Integration of Biodiversity Education in the Initial Education of Primary School Teachers: Four Comparative Case Studies from Europe.

In this article, we present results from an international research study on biodiversity education in pre‐service education of primary school teachers. The study was carried out between 2004–2006 in four teacher education institutions in Cyprus, England, Switzerland and Germany. We used document analyses and in‐depth interviews with 27 teacher educators and 22 student teachers to examine the integration of biodiversity into the pre‐service teacher education programmes, and the student teachers’ satisfaction with their respective education. In all teacher education institutions, aspects of biodiversity education were integrated mostly in the natural science modules which provided students at least with some information on the scientific aspects of biodiversity. Few modules included aspects of the controversial nature of biodiversity conservation in relation to economics, ethics, social and political concerns, and methodological approaches on how to deal with this. In the institutions in Cyprus, England and Germany the teaching focus was content‐oriented, whereas in Switzerland a situated method‐oriented approach was used. The student teachers in Switzerland felt more confident to teach about biodiversity in school. All interviewees thought it necessary to prepare primary school student teachers on how to address biodiversity in schools, and strategies on how best to achieve this are critically discussed.

Creativity in Physics: Response Fluency and Task Specificity

The purpose of this study was to explore creativity in the domain of physics and, specifically, its relation to fluency of responses (divergent thinking) and type of task. Fifty-four university students were pretested on their knowledge of relevant physics concepts. They then were asked to solve 3 ill-defined problems representing different types of tasks. The appropriate responses given to each problem were evaluated as to their number (fluency) and frequency (originality). Task-specific components were found to influence creativity independently and to moderate the effects of general factors such as fluency of responses. Efforts to predict and facilitate creativity in educational settings, therefore, also must take into account the way creativity is manifested within particular domains and the constraints that different types of tasks may impose.

Modeling complex marine ecosystems: an investigation of two teaching approaches with fifth graders

This study investigated acquisition and transfer of the modeling ability of fifth graders in various domains. Teaching interventions concentrated on the topic of marine ecosystems either through a modeling-based approach or a worksheet-based approach. A quasi-experimental (pre‐post comparison study) design was used. The control group (n = 17) received a traditional worksheet-based instruction about ecosystems, whereas the experimental group (n = 16) received an instruction which was based on Stagecast Creator, an object-oriented programming tool, and a set of modeling-based curriculum materials. Paper-and-pencil tests were used both before and after the study to evaluate students’ development of specific modeling skills. The data analysis followed both qualitative and quantitative methods. The findings of the present study indicate that (i) the development of modeling ability was effectively enhanced through the modeling-based approach, since, after instruction, students were able to transfer those aspects to unfamiliar contexts; in contrast, the more traditional worksheet-based approach did not promote the development of the same aspects of the modeling skill; and (ii) Stagecast Creator enabled students to construct, test, revise and validate dynamic computer-based models of a marine ecosystem through building, testing and debugging complex rules, routines and programs for simulating multiple behaviours and processes of marine species.

Development of decision‐making skills and environmental concern through computer‐based, scaffolded learning activities

This article focuses on the development of decision‐making skills and environmental concern by 11‐ and 12‐year‐old students through computer‐based, scaffolded learning activities. The enacted activities provided necessary scientific information and allowed for the consideration of multiple aspects of the problem, the study of the effects of every possible solution and the formulation and balancing of criteria. The optimization strategy for decision making was adopted, because it allows for the development of compensatory thinking which is more relevant to actual situations of decision making. Twelve students participated in the pilot enactment of the proposed activities. Data collection relied on students’ reports and pre‐ and post‐ tests as well as a closed questionnaire designed to measure students’ environmental concern. The teaching intervention proved quite successful in enhancing the decision‐making skills of the participating children. Moreover, students’ performance on the environmental concern questionnaire correlated in interesting ways with the improvement of decision‐making skills.

Objects, Entities, Behaviors, and Interactions: A Typology of Student-Constructed Computer-Based Models of Physical Phenomena

The purpose of this study was to develop a framework for analyzing and evaluating student-constructed models of physical phenomena and monitoring the progress of these models. Moreover, we aimed to examine whether this framework could capture differences between models created using different computer-based modeling tools; namely, computer-based programming environments which, in prior research, were found to differ in various aspects of the models constructed through them. We analyzed 220 computer-based models of physical phenomena developed by two groups of elementary-school students. Using open coding we developed a framework that includes five elements of scientific models that code for representations of: (i) the physical objects; (ii) the physical entities; (iii) the object behaviors; (iv) the interactions among physical objects, physical entities, and object behavior(s); and (v) the accuracy of the phenomenon depiction. The implementation of this framework confirmed that it can differentiate student-generated models according to their sophistication and structural components, independent of the computer-based programming environments used to create the models.

Teaching and learning about energy in middle school: an argument for an epistemic approach

We have reviewed the existing literature on teaching and learning about energy to develop an overview of the ongoing debate on conceptual aspects of the construct and also to highlight the issues that have emerged in approaches to designing teaching–learning sequences. Our review is informed by those aspects of the historical evolution of the construct of energy that reveal the significance of this topic for science education, and the ongoing debate in science education research about the relevance of energy forms and causal explanatory thinking as features of the use of energy in systems analysis. We elaborate briefly on the distinction between mechanisms and causes, and we outline why energy can only be used as a framework for mechanistic descriptions of system behaviour and not for causal explanations. Drawing on our review, we present an argument for introducing energy as a theoretical framework in the age range of 11–14 years. We illustrate this epistemic approach by outlining in brief the skeletal structure of an activity sequence. The main features of this proposed approach include the use of theories to create models of phenomena, the distinction between states and processes, and the unifying and transphenomenological nature of energy as an interpretive framework. We analyse how this approach responds to the major challenges identified in the science education research literature concerning the teaching and learning of energy. In justifying this proposed approach, we draw on the epistemology of science and also on the detailed results of the broad range of existing studies on this topic from science education research.

A Methodology for Integrating Computer-Based Learning Tools in Science Curricula.

This paper demonstrates a methodology for effectively integrating computer‐based learning tools in science teaching and learning. This methodology provides a means of systematic analysis to identify the capabilities of particular software tools and to formulate a series of competencies relevant to physical science that could be developed by means of these capabilities. This analysis could inform the transition to technology‐rich learning environments by helping to deflect reliance on computer‐based tools for objectives they cannot meet, while encouraging the design of activity sequences that make the most of the educationally useful capabilities of available computer‐based tools. This methodology is demonstrated by means of two software tools widely used in science learning, namely modelling and simulation tools.

Potential Contribution of Digital Video to the Analysis of the Learning Process in Physics: A Case Study in the Context of Electric Circuits.

We seek to demonstrate how digital video technology can contribute towards our understanding of the process of development of conceptual understanding in physics. We use digital video to analyze 4 brief Physics by Inquiry sessions with 2 groups of preservice teachers. The instances include independent group work and instructor-student interactions. Important insights emerge on the way students attempt to make sense of their observations and the way their initial ideas hamper the process of inquiry. Specific difficulties are identified that influence the learning trajectory. These are classified into categories, including epistemological, conceptual, and reasoning difficulties. Additional results demonstrate the crucial nature of careful guidance in inquiry-oriented activities and the variety in student responses to epistemological and other obstacles.