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1.
Gizem Karaali 《PRIMUS》2019,29(3-4):312-327
Abstract

We provide context and motivation for an instructor to use real-life examples in the calculus classroom. To this end we describe two specific project ideas, one related to the devastating impact of methylmercury fungicide in a grain seed supply and the other to a catastrophic methane leak. By using calculus in contexts that have social justice implications, we hope to empower students to reason for themselves, to use mathematics as a powerful tool to deepen their understanding of the world, and ultimately, to effectively confront the challenges society faces.  相似文献   

2.
ObjectivesTo gain consensus among an ethnically and linguistically diverse group of international child protection experts on the structure and content of a new survey tool for retrospective measurement of child abuse, and to determine the performance of the instrument through an international field trial with young adults.MethodsThe questionnaire was developed through focus group discussions with international experts, and then subjected to a Delphi study in two waves to determine the perceived importance and translatability of items. The resultant questionnaire was translated into six languages and field tested in seven countries with convenient samples of young adults aged 18–26 years (N = 842).ResultsChild maltreatment experts from 28 countries provided input to questionnaire development. Satisfactory agreement on draft item inclusion and exclusion and the translatability of items was gained. The tool includes 15 primary questions about potentially abusive physical, sexual and emotional events, with follow-up questions about perpetrator characteristics, frequency of acts and periods in childhood when the recalled abuse occurred. The field test revealed lifetime prevalence per item usually exceeded 10% (11/15 items; range 2.1–49.5%). Internal consistency (Cronbach's alpha) was moderate to high for each of three item sub-sets (between .61 and .82) and the rates of missing data were low (less than 1.5% for 14 of 15 items). The great majority of respondents nominated either peer and/or adult perpetrators (between 82.3% and 98.2% depending upon the item), and among these, child/adolescent peers and non-family adults (including teachers for emotional and physical acts) were nominated often.ConclusionsThe ICAST-R is based on consensus from international experts, translates clearly and has satisfactory properties for adoption as a survey tool to estimate prevalence and describe perpetrators and other contextual aspects of child abuse.Practice implicationsThis tool can be utilized in a broad range of cultures and languages and may contribute to improved research practice. Although the core items are limited to just 15 acts of maltreatment, if these behaviorally specific questions are adopted as key indicators and incorporated into comprehensive local, national or regional surveys, eventually there should be greater comparability in survey estimates.  相似文献   

3.
The basis of this intervention study is a distinction between numerical calculus and relational calculus. The former refers to numerical calculations and the latter to the analysis of the quantitative relations in mathematical problems. The inverse relation between addition and subtraction is relevant to both kinds of calculus, but so far research on improving children’s understanding and use of the principle of inversion through interventions has only been applied to the solving of a + b − b = ? sums. The main aim of the intervention described in this article was to study the effects of teaching children about the explicit use of inversion as part of the relational calculus needed to solve inverse addition and subtraction problems using a calculator. The study showed that children taught about relational calculus differed significantly from those who were taught numerical procedures, and also that effects of the intervention were stronger when children were taught about relational calculus with mixtures of indirect and direct word problems than when these two types of problem were given to them in separate blocks.  相似文献   

4.
ABSTRACT

Disruptive student behaviour is a major concern for teachers, causing classroom conflict and emotional fatigue. Whilst student-teacher closeness is known to reduce student aggression and improve behaviour, it is not yet known why some teachers experience close relationships with disruptive students and others do not. This qualitative study therefore examined relational closeness between elementary teachers and disruptive students in Sydney, Australia. Using a teacher speech sample task, we identified eight disruptive students with ‘complicated’ student-teacher relationships: high in both closeness and conflict. Eleven classroom teachers and seven support teachers each spoke about their relationships with the eight students. Speech samples were analysed using an inductive content analysis to determine characteristics that may facilitate relational closeness in spite of student-teacher conflict. Findings revealed two characteristics of teachers’ speech that guided relational closeness: attributions for disruptive behaviour and emotional competence. Not all teachers, however, described a close relationship. These findings provide new directions for interventions that aim to improve student-teacher relationship quality.  相似文献   

5.

In this article, I argue that the term “sexual orientation” serves as a mechanism for preserving heteronormative hegemony, with the proposed concept of “relational orientation” encouraging a richer theoretical analysis of the factors that shape identity. The relational orientation approach establishes a more holistic representation of lesbian, gay, and bisexual (LGB) individuals by granting primacy to romantic partnering choices, as opposed to the traditional emphasis on sexual behavior alone that ultimately functions to derogate this community. Furthermore, the model invites exploration of how the dynamics of all social relationships are profoundly and divergently shaped by one's “orientation.” By promoting greater understanding, this discursive framework offers educators a valuable epistemological and pedagogical tool that has the potential to lead to significant personal and societal transformation.  相似文献   

6.
ABSTRACT

This article offers a conceptual and analytical framework for understanding the ‘understandings’ generated through practitioner research, and specifically exploratory practice (EP), based on Aristotle’s philosophy of knowledge. Drawing on Olav Eikeland’s interpretation of Aristotle’s philosophy of knowledge as a gnoseology, it illustrates how a gnoseology framework adapted from Eikeland’s work was used to analyse the different types of understanding generated through the processes and products of practitioner research. Specifically, it looks at the understandings developed in an English for Academic Purposes class as the learners explored their own puzzles about language learning using the principles of EP, a form of practitioner research mainly used in language teaching. Focusing on one of the learners in the class, it traces his developing gnoseology across the 10-week course by analysing the naturalistically generated classroom artefacts produced through the EP process. It then shows how the different understandings developed reflect an interrelated and relational view of knowledge and concludes by suggesting that such a gnoseology framework might provide a valuable conceptual and analytical tool for understanding the relationship between different forms and ways of knowing in practitioner research.  相似文献   

7.

This paper describes a case study investigating the impact of a primary mathematics method programme on pre-service primary teachers' capacity, and willingness to learn and teach mathematics for relational understanding. The programme, a collaborative endeavour between primary schools and university tutors, enables student teachers to practice in an on-going, integrated and consistent manner what they are learning in theory, and to reflect on their experiences. The findings from test, questionnaire and interview data indicate that the weekly cycle of theory, practice and reflection in which student teachers engage enhances their capacity, and provides an incentive for them to learn and teach mathematics for relational understanding.  相似文献   

8.
关系代数是一种抽象查询语言，是关系数据操纵语言的一种传统表达方式。SQL是一种结构化的查询语言，已成为关系数据库的国际标准语言。本文给出了二者之间的一种对应关系。  相似文献   

9.
Abstract

Schools need teachers who can provide English language learners with equal access to academic content and to information technologies. The authors propose that the integration of standards in TESOL (teaching English to speakers of other languages), the theory of multiple intelligences (MI) and technology can provide an equitable education, support learning differences and develop English language skills across the curriculum. The authors suggest how the integration of TESOL standards, MI theory and technology can become a part of pre-service teacher education and discuss some of the challenges to transferring this integration into the classroom  相似文献   

10.
Abstract

During the past decade, computer scientists have developed dozens of concurrent (or parallel) programming languages. These languages hold the promise of opening up exciting new applications for computers. But that will happen only if people can effectively learn, use, and understand these new languages. To explore these issues, I developed a concurrent extension to Logo (called Multi‐Logo), and conducted an experimental study with a group of elementary school students. The students used MultiLogo to control simple robotic devices built out of LEGO bricks. In analyzing the children's work, I developed three primary categories of MultiLogo programming bugs: problem‐decomposition bugs, synchronization bugs, and object‐oriented bugs. Based on the results, I recommend ways to improve the design and teaching of concurrent programming languages for nonexperts.  相似文献   

11.
ObjectiveThe presence of child pornography in peer-to-peer networks is not disputed, but there has been little effort done to quantify and analyze the distribution and nature of that content to-date. By performing an analysis of queries and query hits on the largest peer-to-peer network, we are able to both quantify and describe the nature of querying by child pornographers as well as the content they are sharing.MethodChild pornography related content was identified and analyzed in 235,513 user queries and 194,444 query hits.ResultsThe research confirmed a large amount of peer-to-peer traffic is dedicated to child pornography, but supply and demand must be separated for a better understanding. The most prevalent query and the top two most prevalent filenames returned as query hits were child pornography related. However, it would be inaccurate to state child pornography dominates peer-to-peer as 1% of all queries were related to child pornography and 1.45% of all query hits (unique filenames) were related to child pornography, consistent with a smaller study (Hughes et al., 2008).In addition to the above, research indicates that the median age searched for was 13 years old, and the majority of queries were gender-neutral, but of those with gender-related terms, 79% were female-oriented. Distribution-wise, the vast majority of content-specific searches are for movies at 99%, though images are still the most prevalent in availability.ConclusionsThere is no shortage of child pornography supply and demand on peer-to-peer networks and by analyzing how consumers seek and distributors advertise content we can better understand their motivations.Practice implicationsUnderstanding the behavior of child pornographers and how they search for content when contrasted with those sharing content provides a basis for finding and combating that behavior. For law enforcement, knowing the specific terms used allows more timely and accurate forensics and better identification of those seeking and distributing child pornography. For Internet researchers, better filtering and monitoring is possible. For mental health professionals, understanding the preferences and behaviors of those searching supports more effective treatment.  相似文献   

12.
Padmanabhan Seshaiyer 《PRIMUS》2017,27(4-5):476-493
Abstract

In this article, we provide some useful perspectives and experiences in mentoring students in undergraduate research (UR) in mathematical modeling using differential equations. To engage students in this topic, we present a systematic approach to the creation of rich problems from real-world phenomena; present mathematical models that are derived from calculus, but can be suitably modified to solve more complex problems; and finally provide pointers on how to train students through the UR process that can help to impact student’s future academic and non-academic careers.  相似文献   

13.
Abstract

Researchers have shown an increased interest in the way teachers use their knowledge about language (KAL) to enhance student understanding and learning. This qualitative case study investigated first- and second-grade teachers’ use of KAL in Arabic. We investigated the linguistic transitions from standard Arabic to spoken Arabic made by the teachers during mathematics lessons. The results suggested that Arab-speaking mathematics teachers were aware of the gap between home language (Spoken Arabic) and school language (Modern Standard Arabic) and used linguistic transition as a teaching strategy to develop academic thinking and behaviour among their students. The results suggested that Arab teachers built a non-formal bilingual education programme where the two languages were used to teach mathematics. Despite the requirement to use Modern Standard Arabic, participants bridged the gap between the languages, which suggests an inherent understanding that ‘language and identity are ultimately inseparable’.  相似文献   

14.
This article focuses on the Relational Agency Framework (RAF), an analytical tool developed for an Australian review and evaluation study of an early years’ policy initiative. We explore Anne Edward’s concepts of relational expertise, building common knowledge and relational agency to explore how Edwards’ concepts, which she refers to as ‘gardening tools’, and the RAF work together to support early years multidisciplinary networks. We argue that early childhood professionals who come together in a multidisciplinary network develop their collective capabilities through relationality and a focus on belonging. The RAF embeds Edwards’ relational concepts and enables the exploration and articulation of how network participants’ individual, discipline-specific knowledge and expertise augments to support collectively transformative practice within their network, their place and wider community. We conclude that a sense of belonging is foundational to the emergence of such relational agency in networks. Tools such as the ‘gardening tools’ and the RAF offer possibilities for addressing the challenges of how to support collaboration between government, early years professionals and communities to work holistically in the best interest of all children and their families.  相似文献   

15.
Purpose: The aim of the paper is to explore how advisors’ relational and professional competence influences inter-subjectivity and farmers’ perceptions of farm visits in a setting where advisors have formal power.Methodology: Advisors from the dairy company Tine, which is owned by farmers in collaboration, visit farmers at least once a year. The aim of the visit is to assist farmers in managing the farm and to control the production conditions in the cowshed. In a case study, we attended 10 such mandatory advisor visits and interviewed both farmers and advisors.Findings: Together with advisor style, our findings show that the power relation leaves room for advisors to define their roles widely, ranging from inspector to coach. Advisors have different perceptions of what their jobs are and when they have done a good job. These differences determine the degree of inter-subjectivity and how satisfied farmers are with visits. Furthermore, advisors’ relational and professional competencies are crucial for achieving high inter-subjectivity and satisfied farmers.Theoretical implications: This paper contributes to the theory by identifying factors that influence farmers’ perceptions of advisor visits, as well as by showing the importance of the advisor’s relational and professional competence in a setting where they have formal power.Practical implications: Partly as an outcome of this study, Tine has started a process to separate the control function from farm visits. Tine has also decided to let farmers choose advisors themselves. Originality/value: The power relation in our study differs from most consultant–client interactions in the literature.  相似文献   

16.
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17.
Abstract

This paper adds to the literature on field instruction and supervision of social work practicum students by nonMSW professionals. It shares insights gained from a focus group discussion of professionals' experiences with practica when there was no MSW on site. Reported findings indicate student, agency, and relational characteristics contribute to the success of these placements. The focus group and the authors conclude that active involvement of all three parties -the on-site nonMSW supervisor, the off-site MSW field instructor, and the practicum student -in a triad model of field education increases the likelihood that these practica provide students with field learning experiences that are among the very best.  相似文献   

18.
Abstract

This article inquires into the role of humor in the relational learning process that takes place in adventure education programs. It presents program episodes, which the authors experienced in their practice as facilitator, staff trainer and researcher, and explores the related literature. Four aspects appear to affect whether humor either facilitates or interferes with participants' learning in development programs. First, humor plays a role in developing relationships among participants and between participants and facilitators, and hence in the relational safety that characterizes an environment conducive to learning. Second, it may play a role in creating a workable distance to sensitive learning issues. Third, humor may offer new and unexpected perspectives, which contribute to revising familiar but restrictive reference frames. Finally, humor seems to fulfill these functions to the extent that it is not planned to do so, and as such may exemplify the ‘paradox of functionality’ in relational processes.  相似文献   

19.
ABSTRACT

To gain insight into the educational opportunities for European foreign national prisoners, an online survey was distributed among educational providers and prison managers (N?=?108). The results demonstrate that courses for learning domestic languages are most frequently offered. Other educational courses mostly relate to primary education and psychosocial courses. Based on the online survey, four organizations are investigated in depth to gain more information about how they work. We conducted 12 semi-structured individual and one group interview with professionals and prisoners. The results of the hybrid thematic analysis showed that different models exist to organize education for FNPs. The findings make contribution to the development of European pilot projects that provide distance education to FNPs offered by their home country.  相似文献   

20.

This article proposes a unit on program verification that could be included in are intermediate‐level undergraduate course. A linked cursor implementation within an array for the binary search tree abstract data type (ADT) is used ASA case study. The proofs of correctness for the ADT operations are given in a careful, but informal style consistent with the level of formality common in discrete mathematics and calculus courses.  相似文献   

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