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There is a collective agreement about the necessity of content knowledge (CK) as a prerequisite for pedagogical content knowledge (PCK). However, most PCK models lack explanatory power because of the missing link between CK and PCK. Thus, the study firstly attempts to develop a theoretical model that consists of knowledge of students' learning difficulty (KSLD) as a plausible pathway between CK and PCK with the conceptual change research entry. Secondly, it tests the causative relationship between CK and KSLD of PCK. The CK for this study constitutes acid rain, as well as the concepts of photosynthesis and cellular respiration. Seventy-three preservice science teachers (PSTs) participated in this study. The study used open-ended surveys and vignette-based individual interviews to measure PSTs' CK and KSLD, respectively. The results indicate that (1) PSTs' CK and KSLD are low. (2) There is a significant correlation (p < 0.01) between PSTs' CK and KSLD. (3) Compared with a low or moderate level, the high level of PSTs' CK is a significant predictor (p < 0.01) of their KSLD. Qualitative evidence supports preliminary quantitative results of the study. The study provides a PCK model that indicates KSLD as a plausible pathway to connect CK and PCK, using a conceptual change inquiry as a point of entry. The study implies the proposed PCK model based on conceptual change learning is useful for future teachers in responding to student learning difficulties. Besides, the PCK model is a fertile ground for robust research.

The purpose of this study was to examine the impact of inclusive versus traditional science classrooms on eighth-grade students' attitudes towards science through mixed research design. A total of 121 students from four eighth-grade science classes participated in this study. The experimental group of students (N=61) learned a unit of structure of matter in inclusive science classrooms in which theory of multiple intelligences (MI) was used as a mediator, aligned with the principles of Universal Design for Learning, to differentiate instructional strategies, assessment approaches and types of assignments, incorporating all students' strengths or intellectual profiles, while the control group of students (N=60) learned the same unit in traditional science classrooms. Changes in students' attitudes towards science over the time period (pre-test, post-test, and follow-up) were assessed using a Likert-scale questionnaire and individual interviews. The results of statistical analysis indicated that compared to traditional classroom, inclusive classroom using MI-inspired lessons significantly improved and maintained the students' attitudes towards science. The quantitative results were further supported by evidence from qualitative data gathered through post and follow-up interviews. This study has implications for the nature of inclusive practices in science classrooms concerning the value of students' attitudes towards science.

The purpose of this investigation was to qualitatively describe high school students' reasons for their science dispositions (attitude, perception, and self-confidence) based on their long-term experience with innovative technology-embedded environmental research projects. Students in small groups conducted research projects in and out of school with the help of their teachers and community experts (scientists and engineers). During the 3-year period of this nationally funded project, a total of 135 students from five schools in a mid-west State participated in research activities. Of the 135 students, 53 students were individually interviewed to explore reasons for their science dispositions. Students' reasons for each disposition were grouped into categories, and corresponding frequency was converted to a percentage. The categories of reasons were not only attributed to the use of innovative technologies in environmental research but also the contexts and events that surrounded it. The reasons that influenced students' science dispositions positively were because engaging in environmental research projects with technology contributed to easing fear and difficulty, building a research team, disseminating findings, communicating with the community, researching with scientists, training by teachers, and acknowledging teachers' knowledge. These results advanced how and why students develop science dispositions in the positive direction, which are as follows: building science teacher capacity, developing a community of inquirers, and committing to improve pedagogical practices.

This study examined the impact of a Prediction-Observation-Explanation (POE) intervention on 15 seventh-grade students’ relational conceptual changes and scientific inquiry abilities as they investigated the plant absorbance/transport phenomena in a photosynthesis learning sequence. The variation theory of learning that promotes intellectual empathy underpinned the study’s pedagogy. A granular phenomenography analysis of students’ pre-post inter-intra-explanations through writing and drawing resulted in seven theoretical descriptive categories. A relational conceptual change perspective involved in the interventional investigations resulted in 1) adding and deleting categories of ideas from pre-to-post teaching, 2) change in the number of students within the categories of ideas, 3) the replacement of everyday language with scientific knowledge, and 4) the complexity of students’ responses from pre-to post-teaching. In assessing students’ scientific inquiry ability levels with a POE analytic rubric of writing and drawing worksheets, 18% and 82% were developing and proficient, respectively. [ABSTRACT FROM AUTHOR]

The purpose of this study was to adapt "Survey of Pre-service Teachers' Knowledge of Teaching and Technology" in order to assess pre-service primary teachers' Technological Pedagogical Content Knowledge (TPACK) to Turkish. 407 pre-service primary teachers (227 female and 180 male) in their final semester in Education Faculties in Turkey participating in this study were selected with criteria sampling which is the method of purposeful sampling. Exploratory and confirmatory factor analyses, including Cronbach's alpha and item-total correlation coefficients, were used for checking the psychometric properties of the adapted scale. Exploratory factor analysis (EFA) identified eight factors accounting for 59.44% of the variance, Cronbach's alpha coefficient was found to be 0.89 for the overall scale, and item-total correlation coefficients were between 0.42 and 0.74. The results obtained from the EFA supported by confirmatory factor analysis showed that there were new four factors based on the subject matter (science, mathematics, social studies and literacy) although four factors were the same as in the original scale. It was concluded that the adapted scale should not be used in academic studies focusing on Turkish pre-service primary teachers' TPACK. The unexpected results of this study were discussed for researchers and program developers in Turkish teacher education.

The purpose of this case-study is to narrate a secondary science teacher's experience of his professional development (PD) education and training in innovative technologies (IT) in the context of engaging students in environmental research projects. The sources from which the narrative is derived include (1) the science teacher's reflective reports during three summer institute programs and (2) the science teacher's reflective reports while subsequently engaging students in IT-embedded environmental research projects in his classroom. The science teacher's explanations for changes in students' perception of their IT fluency illuminate his personal narrative. The science teacher attributed his growth and significant changes in students' perceptions of their IT fluency to the following mechanisms: (a) a personal commitment to developing his own and his students' IT abilities in the context of doing environmental research projects, and (b) an increase in class time devoted to science education due to school-time scheduling policy. The study implies that immersive professional development opportunities have the potential to produce significant increases in students' perceptions of their IT fluency.

The purpose of this mixed-method study was to investigate the changes in high school students' perceptions of fluency with innovative technologies (IT) and the levels of students' scientific inquiry abilities as a result of engaging students in long-term scientific research projects focusing on community-based environmental issues. Over a span of 3 years, a total of 125 ninth- through twelfth-grade students participated in this study. A project-specific Likert-scale survey consisting of three parts (fluency with All Technologies, GPS/GIS, and CBL2/EasyData) was administered to all students as a pre- and post-test. At the end of the study, 45 students were randomly interviewed and asked to elaborate on the changes in their perceptions of fluency with IT. The results indicated statistically significant increases (p less than 0.001) in students' perceptions of their fluency with IT. Qualitative analysis of students' interview results corroborated the statistical findings of students' changes in perceptions of their fluency with IT. Students' research papers based on the environmental studies conducted at the interface of classroom and community were analyzed using the "Scientific Inquiry Rubrics," which consist of 11 criteria developed by the researchers. Results indicated the students' abilities to conduct scientific inquiry for 7 out of 11 criteria were at the proficient level. This study clearly points to the correlation between the development of IT fluency and ability levels to engage in scientific inquiry based on respective competencies. Ultimately, this research study recommends that students' IT fluency ought to be developed and assessed concurrently with an emphasis on contemporary higher order scientific inquiry abilities. (Contains 2 figures and 3 tables.)

The purpose of this study was to investigate the effects of the Common Knowledge Construction Model (CKCM) lesson sequence, an intervention based both in conceptual change theory and in Phenomenography, a subset of conceptual change theory. A mixed approach was used to investigate whether this model had a significant effect on 7th grade students' science achievement and conceptual change. The Excretion Unit Achievement Test (EUAT) indicated that students (N = 33) in the experimental group achieved significantly higher scores (p less than 0.001) than students in the control group (N = 35) taught by traditional teaching methods. Qualitative analysis of students' pre- and post-teaching conceptions of excretion revealed (1) the addition and deletion of ideas from pre- to post-teaching; (2) the change in the number of students within categories of ideas; (3) the replacement of everyday language with scientific labels; and (4) the difference in the complexity of students' responses from pre- to post-teaching. These findings contribute to the literature on teaching that incorporates students' conceptions and conceptual change. (Contains 5 figures and 4 tables.)

This article presents the findings of an international collaborative investigation into preservice teachers' views on the nature of scientific knowledge development with respect to six elements: observations and inferences, tentativeness, scientific theories and laws, social and cultural embeddedness, creativity and imagination, and scientific methods. A total of 640 preservice teachers, 209 from the United States, 212 from China, and 219 from Turkey, participated in the study. The survey "Student Understanding of Science and Scientific Inquiry (SUSSI)", having a blend of Likert-type items and related open-ended questions, was used to gain a fuller understanding of the preservice teachers' views of the nature of scientific knowledge development. Across the three countries, the participants demonstrated better understanding of the tentative NOS aspect but less understanding of the nature of and relationship between scientific theories and scientific laws. The Chinese sample scored highest on five of the six Likert sub-scales, the USA sample demonstrated more informed views on observation and inference, and the Turkish preservice teachers possessed relatively more traditional views in all six NOS aspects. Conclusions and limitations of the present study as well as implications and recommendations for future studies, are also discussed.

This research focuses on use of a triadic teaching approach in a science-technology-society (STS) course designed for future science teachers for middle schools in Turkey. Forty-three pre-service science teachers were enrolled in a semester-long course organized around issues students identified and used throughout the semester. The triadic teaching approach includes library-online searches that lead the students to design and conduct investigations, to carrying out mini-scientific symposia, and to preparing and conducting poster presentations open to the entire student body and faculty. The results of a 30-item Likert scale, administered to the students as a pretest and a posttest, indicated that there were significant increases in positive attitudes towards STS issues from the beginning to the end of the study. Individual interviews were also conducted with the students to determine the individual effects of each component of the triadic teaching approach on their attitudes towards STS issues. All aspects of the new approach provided significant contributions to the development of more positive attitudes among the students towards STS via interviews and on all sub-scales of a survey administered that include: (1) pupil interest in STS issues; (2) teacher interest in STS issues; (3) general perceptions regarding importance of STS issues.

Although researchers in higher education propose alternatives to traditional approaches to assessment, traditional methods are commonly used in college or university science courses. The purpose of this study was to explore the feasibility and validity of Prospective Science Teachers' (PSTs) concept maps as authentic assessment tools in a student-centred approach to describe the changes in the conceptual understanding of the PSTs in general chemistry laboratory investigations. After the PSTs (n = 47) decided on important issues, such as who would assess their concept maps and what scoring strategy and criteria would be used, they practiced assessing their own and peers' concept maps during the first five laboratory investigations. They subsequently constructed and assessed pre- and post-laboratory concept maps in a student-centred approach consisting of self, peer, and instructor assessments for the five remaining laboratory investigations. The results of the study showed using pre- and post-laboratory concept maps as authentic assessment tools in a student-centred approach was valid and reliable for describing the conceptual understanding of the PSTs in a university general chemistry laboratory course. The results of individual interviews indicated most PSTs had positive views of their assessment practices in the laboratory course. This study also provides pedagogical implications for the training of science teachers.

The purpose of this study is to present the whole process step-by-step of how a science lesson can be planned and implemented based on Multiple Intelligences (MI) theory. First, it provides the potential of the MI theory for science teaching and learning. Then an MI science lesson that was developed based on a modified model in the literature and implemented in an 8th grade classroom is given as a concrete example in order to help preservice and inservice science teachers to create bridges from the theoretical framework of the MI theory into classroom practice. This study uncovers that there are four important factors affecting how MI science lessons are planned and carried out. They are: (1) identifying individual students' multiple intelligences or strengths via a reliable and valid tool, (2) paying attention to the literature findings related to students' difficulties in learning the relevant science topic, (3) considering the nature of the knowledge structure that students are supposed to learn with respect to the MI, and (4) examining teacher's ability to manage the MI activity. (Contains 1 footnote.)

College science is often poorly taught and it is rare that any consideration is given to the nine visions for reform of science teaching featured in the National Science Education Standards (NSES) (NRC 1996, p. 52). It is even more rare to see interdisciplinary science courses taught in colleges. At many universities, this is changing where there are Science-Technology-Society (STS) enthusiasts. For example, Clemson University (Cheek 2006) is struggling with developing such courses as part of their general education requirements for all undergraduates and similar changes are occurring in Turkish higher education.

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The aim of this study was to investigate the studies of rhetoric and dialectical argumentation stuides published in four leading academic journals in the field of science education through thematic content analysis method. For this purpose, 34 articles, which are in accordance with the examination criteria, were determined by content analysis method. The studies were examined considering the following themes: “aim”, “features of sample”, “subject”, “data collection and analysis method”, “argumentation process”, and “result”. Results revealed that majority of the studies were conducted according to rhetorical argumentation (n=26, %76) and that the studies with dialectic argumentation (n=8, %24) were fewer. Moreover, it has been shown that the most of studies were conducted to analyze student argumentation and to improve students' argumentation skills. It was seen that the sample size is usually small in the argumentation studies. In addition, it was determined that the qualitative and mixed methods were mostly used in the studies and argumentation was mostly applied on science topics and concepts rather than socio-scientific issues. Results showed that various rubrics or argumentative indicators were used to evaluate the argumentation process in most of the studies. In addition, in some rhetorical studies, it has been observed that new argumentation elements are added to adapt argumentation models to science education. It is suggested that in the future studies, dialectical argumentation studies that determine the role of teacher in the argumentation process and studies on the socio-scientific topics with larger samples will fill the gap in this area. [ABSTRACT FROM AUTHOR]