Cloud Pedagogy: Utilizing Web-Based Technologies for the Promotion of Social Constructivist Learning in Science Teacher Preparation Courses

The new guidelines for science education emphasize the need to introduce computers and digital technologies as a means of enabling visualization and data collection and analysis. This requires science teachers to bring advanced technologies into the classroom and use them wisely. Hence, the goal of this study was twofold: to examine the application of web-based technologies in science teacher preparation courses and to examine pre-service teachers’ perceptions of “cloud pedagogy”—an instructional framework that applies technologies for the promotion of social constructivist learning. The study included university teachers (N = 48) and pre-service science teachers (N = 73). Data were collected from an online survey, written reflections, and interviews. The findings indicated that university teachers use technologies mainly for information management and the distribution of learning materials and less for applying social constructivist pedagogy. University teachers expect their students (i.e., pre-service science teachers) to use digital tools in their future classroom to a greater extent than they themselves do. The findings also indicated that the “cloud pedagogy” was perceived as an appropriate instructional framework for contemporary science education. The application of the cloud pedagogy fosters four attributes: the ability to adapt to frequent changes and uncertain situations, the ability to collaborate and communicate in decentralized environments, the ability to generate data and manage it, and the ability to explore new venous.     

Sleep disturbances in adolescents with symptoms of attention-deficit/hyperactivity disorder

We evaluated 32 nonmedicated male adolescents diagnosed with attention-deficit/hyperactivity disorder (ADHD) in childhood, 35 male adolescents similarly diagnosed who were receiving methylphenidate (MPH), and 77 control boys. Both ADHD groups completed self-report questionnaires assessing sleep disturbances; weekday and holiday sleep duration; and symptoms of ADHD, anxiety, and depression. Parents and teachers rated the severity of the participants' ADHD. The control group completed self-report questionnaires assessing sleep disturbances. We found that nonmedicated participants and controls did not differ in the severity of sleep disturbance. In contrast, the medicated participants demonstrated a significantly greater severity of sleep disturbance compared with the nonmedicated participants and reported elevated levels of symptoms of ADHD, anxiety, and depression. Specific analyses showed that depressive symptoms contributed significantly to the degree of sleep disturbance when controlling for ADHD diagnosis and MPH treatment. These findings suggest that among adolescents with ADHD symptoms, the severity of symptoms of depression may contribute to the degree of sleep disturbance in addition to the effect of their primary disorder and MPH treatment.     

Becoming learners/teachers in nomadic space

This paper suggests a conjunction between the learning space of educational edge community (EEC) and the Deleuzeguattarian thought regarding the nature of teachers’ becoming. It attends to the emerging subjectivities of teachers/learners within an EEC, a nomadic, open, and smooth space of learning. It is suggested that autonomous learning processes that are enabled in nomadic spaces provide the freedom that is essential for the immanent growth of complexity that leads to creative becomings.     

Establishing the validity and reliability of a modified tool for assessing innovative thinking of engineering students

Abstract

The goal of this study was to establish the validity and reliability of a self-report tool for assessing individual differences in innovative thinking, based on a modification of the ‘innovative behavior scale’. A five-stage study was conducted among engineering students worldwide, who enrolled in a massive open online course in Nanotechnology and Nanosensors. Content validity was established by a panel of experts in engineering education. Construct validity was established through exploratory and confirmatory factor analysis, indicating a four-factor solution with 13 items loaded above critical level. Known-groups validity revealed differences among learners with distinct expertise. The scale’s stability across populations and over time was confirmed, providing there has been no intentional intervention. Finally, the scale’s concurrent validity was reinforced through data triangulation with actual practice - the fabrication of innovative nanosensors.     

Teaching methods for inventive problem-solving in junior high school

Fostering pupils’ competencies in inventive thinking and problem-solving has remained a rather unresolved issue in traditional schooling, mainly because many people regard creative thinking as a God-given ability, something an individual either possesses or does not possess, but can only be slightly learned or improved. The current study is aimed at evaluating the impact of teaching pupils problem-solving principles based on the ‘idea focusing’ concept, rather than the ‘idea generating’ approach through random search or brainstorming. Data included pre- and post-course quizzes, interviews and observations of class activities. The finding indicated that the participants significantly improved their achievements in suggesting original solutions to problems in comparison to a control group, and successfully utilized the method they had learned in their final project. Some pupils reported that they used the thinking patterns they had procured during the course in other contexts as well, for example, in school or at home. These results suggest that there is benefit in teaching pupils methods for focused thinking in problem-solving; these methods, however, should be regarded as a kind of heuristics that can help guide the thinking process rather than being used as strict algorithms. The important point is to provide pupils with opportunities to develop their own thinking methods and explain their ideas.     

From ‘doing’ to ‘doing with learning’: reflection on an effort to promote self-regulated learning in technological projects in high school

Project-based learning is undoubtedly one of the best instructional methods for developing students’ broad learning capabilities, beyond teaching specific subject matter. However, experienced engineering teachers often tend to concentrate on merely teaching pupils the technical side of project work. This paper describes a programme aimed at fostering self-regulated learning among high schools pupils working on projects in electronics, control systems and robotics. The programme sought, for example, to promote pupils’ conceptual knowledge regarding the subjects they dealt with in their projects, enabling the learners to gain experience using simulation, laboratory testing and troubleshooting in a system that they were constructing. The change in project work also required pupils to document systematically all stages of system development and reflect on their learning by preparing a printed or web-based ePortfolio on the project. Outcomes of the in-service training course given to teachers countrywide and the first signs of change in project work in schools are reported.     

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.     

Characterisation of Cognitive Difficulty Level of Test Items

Abstract

The study of subjects in science and technology involves high level thinking. Student‐material match at the design stage of a curriculum refers, in most cases, to the general criteria of thinking and learning theories, such as the ability to carry out ‘formal operations’ according to Piaget. The question of relevance may arise when dealing with a specific subject matter, in this context. Checking the student‐material match through an achievement post test enables us to refer to the relevant contents.

A method is proposed to characterise a test item through a content ingredient (Number of Schemes NS required for solution) and the required learner's resources (represented by the Problem Solving Taxonomy PST level). The Cognitive Difficulty Level CDL is then defined as: CDL=NS ? CDL.

The validity of CDL as a difficulty index of a test item, has been verified in the case of teaching basic electronics at the high‐school level (tenth and eleventh grades): a decrease has been obtained in students' achievement scores with an increase in the CDL value. Two types of student populations have been involved in the study: high and low achievers. The findings indicate that at the initial stage of learning a new subject, mainly the content factor (NS) affects the difficulty level of a mental task. After the ‘transient time’ has elapsed, both factors, NS and PST (i.e. CDL) affect the cognitive difficulty level. In the later stages, when the complexity of the material increases, the effect of PST becomes most dominant.     

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.