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.

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.

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.

Floating and sinking (FS) is a key topic in science education, both at primary and secondary levels. The interpretation of FS phenomena, however, is challenging due to the difficulty of the scientific concepts and explanatory models involved (e.g., density, buoyancy), along with students' everyday experiences, which conflict with scientific explanations. Consequently, many studies over the last few decades have investigated how FS could be taught effectively to students of different ages while utilizing multiple teaching approaches. This meta‐analysis summarizes findings from 69 intervention studies on teaching FS conducted between 1977 and 2021. Over all studies, we estimated a mean effect size of g = 0.85 (95% CI = 0.71, 0.99). This large effect size demonstrates that, although FS is a challenging concept, teaching FS is effective even in elementary school. Moreover, in a moderator analysis, we investigate the effect of intervention characteristics, students' age, as well as study design, and assessment features on the mean study effect size. To analyze the effect of these moderator variables, we use a three‐level hierarchical meta‐regression model for dealing with multiple effect sizes from single studies. We found two intervention characteristics that explain variance in study effect sizes: longer lasting interventions result in larger effect sizes and interventions where hands‐on experiments are applied are more effective than those utilizing virtual experiments. Furthermore, studies with a treatment‐control group comparison have significantly smaller effect sizes than studies with a pre‐post design. We discuss the implications of our findings regarding the moderator variables for effective teaching of FS and further research on FS.