Petros Kariotoglou

In this study we describe the refinement process from the first to the second phase of a teaching–learning sequence development and implementation. The TLS comprises several experimental activities that aim to support understanding of Control of Variables Strategy (CVS) reasoning in the context of floating/sinking and properties of magnets. The research was carried out during a science laboratory course in a department of early childhood education. The participants numbered 67 in the first phase of the survey and 45 pre-service early childhood teachers (referred to as student teachers) in the second phase. The analysis is theoretically grounded in Pickering’s model of scientific practice, as adapted in science education, which provides the analytical framework for identifying and categorizing refinement changes. The results showed that the refinements are differentiated from each other according to the factors that guide them. Specifically, the three refinement changes guided by the educational factor were local-guided, i.e., related to a specific activity dealing with the student teachers’ educational needs, and the other two, also driven by the scientific factor, were holistic-open refinements, i.e., related to a set of activities adjusting the TLS to the new scientific trends. These findings contribute to the literature on Teaching-Learning Sequence development by illustrating how theoretically grounded analysis can make refinement processes more explicit and analytically interpretable.

In this study we explore the effect of a professional development (PD) program on four science teachers’ views and practices nearly a year after its completion, regarding inquiry implementation in everyday school practice. The PD program aimed to familiarize participants with current trends in science education (SE), putting emphasis on the inquiry approach. The basic research question guiding this study is whether science teachers’ inquiry practices and views changed, and to which extent, long after their participation in the PD program. Teachers’ practices were recorded, both during and after the PD, through non-participatory observation and were analysed through a semi-quantitative method. Teachers’ views were also recorded both during and after PD through structured questionnaires and reflective interviews, producing qualitative data that were analysed. Findings are encouraging concerning the preservation of guided inquiry practices obtained during the program, while more open inquiry practices proved to be limited. Teachers’ views concerning inquiry remained positive, also maintaining their innovative character.

This study aims to examine the views of pre-service early childhood student teachers (referred to as student teachers) regarding the potential impact of an inquiry-based science course on their intention to utilize inquiry-based learning approaches, such as the Control of Variables Strategy (CVS) method. The study comprised a preliminary phase (N = 17) and a primary phase (N = 81). The participants’ level of understanding of the inquiry-based method was assessed using an open- and semi-open questionnaire. A 34-item Likert-type questionnaire was created using the Theory of Planned Behavior in the preliminary phase of the study and utilized in the primary phase to examine student teachers’ intentions to include the CVS technique into their lessons. The results showed student teachers’ strong intention to implement inquiry-based learning strategies, being supported by their positive estimations of managing the CVS method engagement in the classroom. However, their estimations of the significant others’ opinions and the personal gain–loss balance expected from engaging with the CVS method significantly hindered their intention. Most interestingly, the results of the study suggest that the various levels of comprehension of the CVS method attained by student teachers are connected to the adoption of distinct approaches in their future teaching endeavors. In light of these results, we discuss several teaching implications.

Our study looks into science museum educators’ views and their practices about inquiry in non-formal venues, such as NOESIS, Greece. On this ground, we developed an interview protocol to use as a basis in the semi-structured interviews conducted with four science museum educators to cast light on their views about inquiry. In addition, an observation protocol was modified in order to observe their practices when implementing educational programs for school groups. Data analysis showed that in regard to the museum educators’ views, they all expressed a slightly different view about inquiry, which was either empirically or intuitively based. They all agreed that inquiry is easier adopted in non-formal settings and argued that students’ main gain when they get engaged in inquiry-based activities is the actual involvement they experience. As regards the museum educators’ practices, a repertoire of teaching approaches was observed, ranging from a traditional teacher-centered approach to open inquiry. Building on our data, we suggest the development and implementation of a professional development course that will enrich science museum educators’ inquiry views and practices and empower them to integrate inquiry-based practices into their own.

In this paper, we investigate the intentions of kindergarten teachers to use the content and to apply the teaching methods that they acquired in a one-day teacher training seminar. According to the theory of planned behavior, the answer to this research question is directly related to a series of social-psychological personal criteria assessments, such as an assessment of the personal gains or losses, the opinions of important third persons, the teacher’s own assessment of the value of the students’ learning, and the perceived behavioral control assessment. A total of 114 participants completed a 5-point Likert-scale questionnaire that consisted of two sets of five questions each. The results show that the kindergarten teachers’ intentions to use particular content and teaching methods are based on whether they have the skills to apply them successfully, and on their assessment of the ability of their students to acquire meaningful knowledge. The teacher’s choice of teaching method is also associated with the assessment of the personal gains or losses, as well as with the opinions of important third persons. Furthermore, the study findings show that there are two distinct categories of kindergarten teachers: those whose teaching is based on the tradition of science education, and those whose teaching is based on the tradition of early childhood education. The teaching implications of the results are also discussed.

In the last 30 years, there has been an ongoing discussion about the effectiveness of Professional Development (PD) programs, which aims to promote reform-based Science Education (SE). Among the many, different trends of reform-based science teaching, inquiry-based approaches hold a dominant role. This study shows how teachers’ practices were affected by a PD program that aimed to familiarize them with reform-based teaching through gradual instructional design, with the main focus on inquiry. The PD program had a duration of 12 months and involved four science teachers (two primary and two secondary) who were trained in both in and out of school teaching settings. The changes in teachers’ practices were recorded through an observation protocol containing predefined categories in eight domains, one of which––that of inquiry––is discussed in this paper. A semi-quantitative method was used for data analysis. Results indicate that all the teachers had an overall improvement in the domains of guided inquiry practices and student-centered teaching approaches. However, there did not appear to be any substantial progress in open inquiry practices. Restrictions of the present study are presented, and suggestions for improving future PD programs promoting sustainable inquiry implementation are also discussed.

This essay synthesizes more than a decade of research, most of which has been published, on the teaching and learning of floating and sinking (FS) phenomena. The research is comprised of the iterative design, development, implementation and evaluation of a Teaching-Learning sequence (TLS) for the teaching and learning of density within FS phenomena. It was initiated within the frame of the European Community supported “Materials Science” project. Due to the many, different aspects of the project, each publication has focused on a particular part of the study (e.g., effectiveness and the iteration process). The didactic transformation for the teaching of FS phenomena is presented and discussed here. In doing so, it is essential to mention: (a) the students’ ideas as the main cause of the scientific knowledge transformation, (b) the scientific/reference knowledge, and (c) the knowledge to be taught and its limitations. Thus, we intend to describe and justify the didactic transformation process and briefly synthesize the published (from previous papers) and unpublished results to show its effectiveness.

In this study we investigated pre-service early childhood teachers’ (referred to as student teachers) beliefs that might influence their intention to use inquiry-based learning methods that have been taught on an inquiry-based science course. During this course, the student teachers (N = 17) participated in a number of classroom experiments concerning phenomena that are part of the curriculum of early childhood education, focusing on pupil’s conceptual representations using the inquiry-based approach. Moreover, the student teachers were explicitly taught the reasoning of Control of Variables Strategy (CVS) as an aspect of inquiry. A four-item open-type questionnaire on the classroom experiments that were approached through the CVS method, was used to investigate student teachers’ understanding of this method. Moreover, an eight-item open-type questionnaire and a four-item Likert scale questionnaire were used to investigate student teachers’ intention to use the CVS method in their teaching practice, focusing on attitude, normative and control socio-psychological factors. The results show the categories of student teachers’ beliefs, leading to teaching implications, and indicate a tentative relationship with an indeterminate direction. Specifically, those student teachers who understood the CVS method were influenced by control factors for its implementation, whereas the other student teachers were influenced by attitude and/or normative factors.

This essay is a synthesis of more than twenty years of research, already published, on teaching and learning fluids and pressure. We examine teaching fluids globally, i.e., the content to be taught and its transformations, students’ alternative conceptions and their remediation, the sequence of educational activities, being right for students’ understanding, as well as tasks for evaluating their conceptual evolution. Our samples are junior high school students and primary school student-teachers. This long-term study combines research and development concerning teaching and learning fluids and has evolved through iteratively based design application and reflective feedback related to empirical data. The results of our research include several publications.