How the Curriculum Guideline “The Cell Is to Be Studied Longitudinally” Is Expressed in Six Israeli Junior-High-School Textbooks

The most recent science and technology curriculum for junior high school in Israel contains a new guideline stating that the cell topic is to be taught “longitudinally in conjunction with other study contents.” This guideline confers a change in teaching the cell topic and provides an opportunity to form meaningful relationships between biological phenomena at the macro level and their cellular explanations. Here, we examined the extent to which six textbooks, available for junior high schools in Israel, support this teaching approach. We found that the textbooks differ in how they express the guideline and that most of them do not support the new teaching approach to any significant extent. Moreover, the textbooks generally emphasize cells’ structure and pay less attention to the processes occurring in them. Our findings could shed light on students’ difficulties in comprehending the living cell and in correlating macroscopic phenomena with their cellular explanations.     

Contribution of Meta‐strategic Knowledge to Scientific Inquiry Learning

The aim of the present study is to explore the effects of Meta‐strategic Knowledge (MSK) on scientific inquiry learning. MSK is a subcomponent of metacognition defined as general, explicit knowledge about thinking strategies. Following earlier studies that showed considerable effects of explicit instruction of MSK regarding the strategy of variables control, the present study explores whether similar effects are found in two additional scientific thinking strategies: Define Research Questions and Formulate Research Hypotheses. Participants were 119 eighth‐grade students from six classes of a heterogeneous school. Equal numbers of low‐achieving and high‐achieving students were randomly assigned into experimental and control groups. The findings showed dramatic developments in students’ performance following instruction. The effect of the treatment was preserved in a delayed transfer test. Our findings show that explicit teaching of MSK had a stronger effect for low‐achieving students than for high‐achieving students. The implications of the findings for teaching and learning in the context of scientific inquiry are discussed.     

The validity of estimating triceps brachii volume from single MRI cross-sectional area before and after resistance training

The aim of this study was to determine whether triceps brachii muscle volume can be adequately estimated from a single anatomical cross-sectional area (ACSA) and can the same model be used for prediction after training. Thirty-five healthy male non-athletes (age 21.6 ± 2.5 years, body mass index 24.8 ± 3.5 kg · m(-2)) volunteered for this study. The volumes of the upper arm extensors were calculated from magnetic resonance imaging (MRI) sequence scans and regression models were developed, which were used to predict muscle volumes from single MRI cross-sectional scans taken at different points along the humerus length. The same procedure was repeated after 12 weeks of maximal resistance training of the elbow extensors. Correlation coefficients were calculated for Model A with CSA(max), humerus length (HL), and body mass index (r = 0.919), a model with CSA(50%) and HL (r = 0.922), and a model with CSA(60%) and HL (r = 0.920) (P < 0.001). The standard error of estimate for Model A, Model CSA(50%), and Model CSA(60%) was 8.0%, 7.7%, and 7.8% respectively. Thesame prediction formula can be used for the left arm (r = 0.904). If a single ACSA is used for triceps brachii volume prediction, the best fit is with Model CSA(60%) and HL, both before and after training (r = 0.941). By introducing humerus length into the calculation, we simplify the procedure for volume measurement, since it can be obtained during MRI scanning.     

Cracks in the iceberg: surfacing the tensions of constructivist pedagogy in the context of mentoring

In this study, the reciprocity between educational reforms and the role of teachers is examined. A social-discursive approach to sense-making provides a theoretical framework for understanding how teachers position themselves within the context of a reform. To illustrate the utility of such an approach, the specific case of a teacher involved in reforms is presented. The results show an ongoing positioning process and this process to constitute both the input and output for the interaction between teacher and reforms. The development of sensitivity to this positioning process appears to be a necessary prerequisite for successful reforms.     

Reconsidering Personal Epistemology as Metacognition: A Multifaceted Approach to the Analysis of Epistemic Thinking

One of the central unresolved conceptual issues that concerns researchers of personal epistemology is the characterization of the intersection between personal epistemology and metacognition. The contested and diverse nature of both constructs makes untangling their connections a complex yet vital task. The purpose of this article is to advance the discussion regarding this intersection by offering a theoretical approach that may serve as a basis for analyzing epistemic thinking and aligning it with current views of metacognition. Based on a synthesis of theoretical and empirical studies, we argue that epistemic thinking is a multifaceted construct with both cognitive and metacognitive aspects. Furthermore, we propose that epistemic metacognition includes several aspects such as metacognitive skills; metacognitive knowledge about persons, strategies and tasks; and metacognitive experiences. The theoretical, methodological, and instructional implications of this approach are explored.     

Lexical inference in L2: predictive roles of vocabulary knowledge and reading skill beyond reading comprehension

The current study examined the predictive roles of L2 vocabulary knowledge and L2 word reading skills in explaining individual differences in lexical inferencing in the L2. Participants were 53 Israeli high school students who emigrated from the former Soviet Union, and spoke Russian as an L1 and Hebrew as an L2. L2 vocabulary knowledge and decoding accuracy predicted L2 reading comprehension, which in turn was strongly related to lexical inferencing abilities in the L2. In addition, decoding accuracy predicted additional variance in lexical inferencing, beyond the role of reading comprehension. These findings support the idea that beginning L2 readers with more precise and efficient lexical representations demonstrate better lexical inferencing abilities, most likely due to the increased automatization of word reading, which frees up resources for higher level processing. These results suggest that lexical inferencing from text in the L2 might be limited not only by vocabulary knowledge and higher order comprehension processes, but also by basic decoding skills.     

Sometimes a novice and sometimes an expert: mentors’ professional expertise as revealed through their stories of critical incidents

Drawing on the methodology of critical incidents, this study sets out to explore the perspectives that 20 experienced in‐service mentors in Israel adopt towards critical incidents in their work, as they account for how they reason about and act upon these incidents. Mentors’ stories of critical incidents shed light on the complex nature of mentors’ professional expertise, reflected in the finding that experienced mentors’ reasoning and behaviour constantly fluctuates between a novice and an expert stage, depending upon the nature of the situation and the type of mentor–mentee interaction that the mentor is confronted with. The study supports the more dynamic, discontinuous and interactionist view of the acquisition of expertise, highlighting the regressions and progressions that play out when experienced professionals take up an additional role, such as in the passage from teaching to mentoring.     

Reading Science Texts—Epistemology, Inquiry, Authenticity—A Rejoinder to Jonathan Osborne

We shall structure this rejoinder around two main sections. In the first, we address three underlying assumptions of our work that Osborne has identified. We indicate points of agreement, disagreement, and clarification. In the second section, we discuss briefly and add our clarifications to three understandings of his that Osborne introduces into the discussion. It should be noted that Osborne’s response is grounded in the same basic assumption as our set of papers, namely, the central role played by reading and writing, and communicative activities in general, both in science and in learning science.     

Perception of Science Standards’ Effectiveness and Their Implementation by Science Teachers

The introduction of standards into the education system poses numerous challenges and difficulties. As with any change, plans should be made for teachers to understand and implement the standards. This study examined science teachers’ perceptions of the effectiveness of the standards for teaching and learning, and the extent and ease/difficulty of implementing science standards in different grades. The research used a mixed methods approach, combining qualitative and quantitative research methods. The research tools were questionnaires that were administered to elementary school science teachers. The majority of the teachers perceived the standards in science as effective for teaching and learning and only a small minority viewed them as restricting their pedagogical autonomy. Differences were found in the extent of implementation of the different standards and between different grades. The teachers perceived a different degree of difficulty in the implementation of the different standards. The standards experienced as easiest to implement were in the field of biology and materials, whereas the standards in earth sciences and the universe and technology were most difficult to implement, and are also those evaluated by the teachers as being implemented to the least extent. Exposure of teachers’ perceptions on the effectiveness of standards and the implementation of the standards may aid policymakers in future planning of teachers’ professional development for the implementation of standards.