Nature of Science and Science Content Learning

Besides viewing knowledge about the nature of science (NOS) as important for its own value with respect to scientific literacy, an adequate understanding of NOS is expected to improve science content learning by fostering the ability to interrelate scientific concepts and, thus, coherently acquire scientific content knowledge. However, there is a lack of systematic investigations, which clarify the relations between NOS and science content learning. In this paper, we present the results of a study, conducted to investigate how NOS understanding relates to students’ acquisition of a proper understanding of the concept of energy. A total of 82 sixth and seventh grade students received an instructional unit on energy, with 41 of them receiving generic NOS instruction beforehand. This NOS instruction, however, did not result in students having higher scores on the NOS instrument. Thus, correlational analyses were performed to investigate how students’ NOS understanding prior to the energy unit related to their learning about science content. Results show that a more adequate understanding of NOS might relate to students’ perspective on the concept of energy and might support them in understanding the nature of energy as a theoretical concept. Students with higher NOS understanding, for example, seemed to be more capable of learning how to relate the different energy forms to each other and to justify why they can be subsumed under the term of energy. Further, we found that NOS understanding may also be related to students’ approach toward energy degradation—a concept that can be difficult for students to master—while it does not seem to have a substantive impact on students’ learning gain regarding energy forms, transformation, or conservation.     

Performance of the Grade of Membership Model Under a Variety of Sample Sizes,Group Size Ratios,and Differential Group Response Probabilities for Dichotomous Indicators

Social scientists are frequently interested in identifying latent subgroups within the population, based on a set of observed variables. One of the more common tools for this purpose is latent class analysis (LCA), which models a scenario involving k finite and mutually exclusive classes within the population. An alternative approach to this problem is presented by the grade of membership (GoM) model, in which individuals are assumed to have partial membership in multiple population subgroups. In this respect, it differs from the hard groupings associated with LCA. The current Monte Carlo simulation study extended on prior work on the GoM by investigating its ability to recover underlying subgroups in the population for a variety of sample sizes, latent group size ratios, and differing group response profiles. In addition, this study compared the performance of GoM with that of LCA. Results demonstrated that when the underlying process conforms to the GoM model form, the GoM approach yielded more accurate classification results than did LCA. In addition, it was found that the GoM modeling paradigm yielded accurate results for samples as small as 200, even when latent subgroups were very unequal in size. Implications for practice were discussed.     

Extended analyses: Promoting mathematical inquiry with preservice mathematics teachers

This paper describes the implementation of extended analysis tasks (EATs) in a required mathematics course for prospective high school mathematics teachers, and investigates the mathematical discovery promoted through engagement with these tasks. Extended analysis tasks are designed to move students beyond the problem context to the underlying mathematical structure of the problem. The results of this study revealed that with careful implementation, these tasks were effective for generating powerful mathematical thinking in preservice mathematics teachers, improving their problem solving, and generally enhancing the habits-of-mind exhibited by successful mathematicians (Carlson & Bloom, 2005).     

Multidisciplinary Decision Making Through Experiential Learning: Perspectives from Practical Trials

Recently many business management programs in institutions of higher learning have undergone significant change in orientation, content, and delivery. In order to ensure that the graduates acquire the education and skills needed in the organizations of the future, these institutions have attempted to bridge theoretical underpinnings with practical content. In so doing, administrators and instructors have given more emphasis to deliberate integration of discipline-specific material. In this article we draw on previous research in both adult and experiential learning to develop an innovative approach for role-playing using case studies in management education. However, unlike the traditional use of cases, our approach builds an experience around the case study company by surrounding learners with additional props to use in the decision-making process. We describe an experiential learning process that provides an opportunity for integration while capitalizing on the characteristics of adult learners. We have used the approach successfully in MBA programs in both Canada and the United Kingdom to challenge students to resolve some of the complex, multi-dimensional issues facing today's organizations. We have also found this approach to be transferable to other learning situations.     

Object permanence in four species of psittacine birds: An African Grey parrot (Psittacus erithacus), an Illiger mini macaw (Ara maracana), a parakeet (Melopsittacus undulatus), and a cockatiel (Nymphicus hollandicus)

Four psittacids—an African Grey parrot, an Illiger macaw, a cockatiel, and a parakeet—were tested on object-permanence tasks that are commonly used to assess levels of understanding in human infants during their first 2 years. These birds showed Stage 6 competence, demonstrating that object permanence is not limited to mammals. The results for these birds were comparable to those of an African Grey parrot that had been trained in interspecies communication prior to object-permanence testing. Our findings thus suggest that although language-like behavior provides a communication channel that facilitates testing, such language training is unlikely to affect the outcome of the tests.     

Unpacking high and low efficacy teachers’ task analysis and competence assessment in teaching low-achieving students in secondary schools

This study adopted a pragmatic qualitative research design to unpack high and low efficacy teachers’ task analysis and competence assessment in the context of teaching low-achieving students. Nine secondary school English and Science teachers were recruited and interviewed. Results of thematic analysis show that helping students perform well in exams was identified by both the high efficacy teachers (HETs) and the low efficacy teachers (LETs) as the sacred task, but the HETs perceived more contextual support from school culture, school leaderships and collegiality than the LETs did. Although the HETs showed more confidence than the LETs in instructional strategies, classroom management and student engagement, both the HETs and LETs experienced struggles when their personality traits and beliefs were in conflict with required strategies or imposed regulations. Despite the LETs having a lower level of perceived competence, their hunger for learning reveals that their sense of efficacy could be enhanced if provided with courses that focus on coaching and mentoring experiences.     

Relationships between learning approach,procrastination and academic achievement amongst first-year university students

Individual differences in student learning influence academic performance, and two aspects influencing the learning process are the particular learning approach the students use and procrastination behaviour. We examined the relationships between learning approaches, procrastination and academic achievement (measured 1 year later as the grade point average (GPA)) amongst 428 first-year university students. Deep and strategic learning approaches positively predicted GPA, and a mediation analysis showed that the strategic learning approach also partly mediated the effect between deep learning approach and GPA. Less procrastination was associated with a strategic learning approach, but procrastination tendencies did not predict GPA. Recommendations are made for educating new students in cognitive and meta-cognitive strategies, helping reduce their procrastination and facilitating the use of deep and strategic learning approaches.