Model‐based reasoning about energy: A fourth‐grade case study

We report a case study of model‐based reasoning in which a small group of fourth‐grade students analyzes the energy flow when a solar panel is used to power an electric motor that spins a propeller. In developing their explanation of energy flow, the students draw on a general model of energy developed collectively by their class in the course of an experimental classroom curriculum led by a trained teacher. They also construct a model‐based representation of the specific system under study. Their investigation and reasoning process exhibit all the features of authentic scientific model‐based inquiry, including the revision of their models to incorporate new information. In the course of their work the students recruit and seamlessly integrate nearly all of the practices of science designated in the Next Generation Science Standards. This case study provides an example of what modeling‐based teaching and learning can look like in an elementary school classroom. It also suggests that the study of energy offers a particularly promising context for developing students' use of science practices, especially the practice of developing and using models.     

The information practices and politics of migrant-aid work in the US-Mexico borderlands

Abstract

Numerous organizations work to provide humanitarian aid to undocumented migrants along the US-Mexico border—from running shelters in Mexico to placing water on migratory trails. Resistance to information-sharing between organizations (and to the public), especially through technologically mediated means, is common. However, some organizers and volunteers work across organizational boundaries and share information informally. Information secrecy is often justified by concerns that law enforcement authorities or anti-immigration activists might gain access to information, allowing them to harm, detain or remove migrants, or interfere with humanitarian work. The choices made about the collection and (non)disclosure of information are manifestations of what we call “liminal” information practices: such behaviors are unique to humanitarian volunteers working in the gray, ethical area between law enforcement and humanitarian values and action, and they are guided by the information politics at play within this context.     

Expanding the Unidirectional View on Parental Television Mediation: Children’s Guidance of Their Parent’s Television Use

Compared to parental mediation research, much less is known about how children influence and guide their parents’ media use. This study examined whether children also mediate the television use of their parents. Measures of an existing television mediation scale were reversed to the perspective of the child guiding the parent’s television use. A sample of 187 parent-child dyads completed a cross-sectional survey in Flanders (Belgium). Factor analyses showed that the original subscales were reproduced with high internal validity. Both parents and children had congruent views about children’s television mediation; television mediation and children's restrictive mediation was positively associated with conflict in the family.     

The real ‘cost’ of study in Australia and the ramifications for China,Australia, and the Chinese nursing students: what do these three players want? A narrative review

Australia attracts international nursing students from China to maintain its economic advantage and to alleviate the projected nursing shortage; conversely, China needs its best and brightest citizens who have trained abroad in nursing to return to cope with current challenges within its healthcare system and nursing education. This paper explores whether China can lure its foreign-trained nurses home to achieve its goals; whether China or Australia will win the nursing talent war; and do Chinese nursing students want to remain abroad or return home. The insight gained can support the development of successful human capital investment for all parties involved.     

Phonological and lexical reading in Italian children with dyslexia

In this study we explore the development of phonological and lexical reading in dyslexic children. We tested a group of 14 Italian children who have been diagnosed with dyslexia and whose reading age is end of grade 1. We compared this group with a group of 70 typically developing children who have been tested for reading at the end of grade 1. For each dyslexic child we also selected a participant who was attending the same grade, was close in age, and showed typical reading development when tested with a narrative passage reading task (Cornoldi, Colpo, & Gruppo MT, 1981) for correctness and reading speed. Children in this group are “same grade controls.” We used a reading task consisting of 40 three syllables words. A qualitative and quantitative method of coding children’s naming allowed us to distinguish several components of their reading performance: the grapheme and word recognition, the size of orthographic units involved in the aloud orthography–phonology conversion, the reading process used to recognize words. The comparison of the dyslexic group with the reading age and the same grade control groups reveals different trends of delayed reading processes. Considering dyslexic children’s chronological age, lexical reading is greatly delayed. Considering dyslexic children’s reading age, the type of reading process that is more deeply delayed is phonological reading. The rate of fragmented phonological reading (i.e., a type of syllabized phonological reading) is much higher in dyslexic children compared to the reading age group, suggesting that some factors undermine the possibility of internalizing the orthography–phonology conversion and the blending processes.     

The stability of children's mathematical behavior: When is a bug really a bug?

This article describes an empirical investigation of the extent to which incorrect arithmetic algorithms persist over time. The use of subtraction procedures by children aged 9–11 was charted over time periods of 1–3 months. The ways in which several bugs might be related to a single misconception were considered and a set of “bug classes” was identified. The results indicated that the prevailing tendency to attribute stable procedural knowledge and systematic behavior to children of this age is misguided. They provide some insight into the development of mathematical knowledge under the influence of conventional instruction.     

Impact and dynamics of portfolio assessment and traditional assessment in a college physics course

Popular belief in alternative assessment procedures suggests that the use of student portfolios can help learners successfully organize and integrate newly acquired scientific knowledge. This two-group comparison study documents the use of student created portfolios in an algebra-based, college-level, introductory physics course. Sixteen students were assessed primarily using a portfolio-style assessment procedure. Nineteen students were assessed primarily using traditional, objective examinations. Both groups were given the same cumulative, multiple-choice final examination. All students completed a pre- and post-self-report survey of achievement in physics. There were no significant differences in learner achievement between the two groups on the final examination or on the self-report of achievement given before and after instruction. Analysis of two focus group discussions did, however, suggest that students assessed by portfolios feel less anxious about learning physics, devote considerable time to reading and studying outside of class, internalize and personalize the content material, and enjoy the learning experience. The results of this study suggest that portfolio-style assessment procedures support student achievement at least at the same level as traditional assessment procedures and appear to have additional benefits. © 1997 John Wiley & Sons, Inc. J Res Sci Teach 34: 255–271, 1997.     

How do preservice teachers perceive ‘environment’ and its relevance to their area of teaching?

The environment is not only an ecological entity distinct from people but a cultural, social, and political construct. Understanding how learners conceptualize ‘environment’ may contribute to more effective environmental education (EE). This study investigated, in a paired pre–post design, 215 students’ understandings of ‘environment’ and perceptions of its relevance to their teaching area, at the onset and toward the end of their studies in teacher-education colleges in Israel. While student teachers, regardless of their major, acknowledged the importance of EE to their future function as teachers, they do not demonstrate an adequate understanding of the concept environment: humans are not viewed as part of the environment nor is the environment understood as a complex web of interactions among people, man-made systems and natural ecosystems. The fact that toward the end of studies, student teachers’ understandings of environment remained essentially basic indicates the necessity to reorient teacher-education programs toward EE. The various ways in which students perceived the relevance of environment to their teaching area are the starting points for this change.     

FUTURE DIRECTIONS FOR CENTRAL AGENCIES OF JEWISH EDUCATION

There is an ancient Chinese saying: “May you live in interesting times.” While some would classify this as a blessing, others would perceive it as a curse. The topic for this morning's discussion arises from a comparable state of ambiguity in regard to Jewish education, for these are certainly the most interesting times for us. Some voices are heard decrying the sorry state of Jewish education in North America and projecting a weakening of Jewish life because of the failures of Jewish education. Others are pointing to the extraordinary potential of Jewish education in the service of Jewish continuity, if we are willing to think about Jewish education in new ways. For those of us who tend the vineyards of Jewish education and maintain the institutions which have served Jewish education, we see great opportunity and serious challenges to existing assumptions in these interesting times. It is in this context that I share some observations about the implications for the future of central agencies of Jewish education.