iPhone 手机掘金

仅需为Apple手机写个小应用软件,有的孩子在自己的卧室里就能赚个百万美元。     

How Middle Schoolers Draw Engineers and Scientists

The perceptions young students have of engineers and scientists are often populated with misconceptions and stereotypes. Although the perceptions that young people have of engineers and of scientists have been investigated separately, they have not been systematically compared. The research reported in this paper explores the question “How are student perceptions of engineers and scientists similar and how are they different?” Approximately 1,600 middle school students from urban and suburban schools in the southeastern United States were asked to draw either an engineer or a scientist at work. Drawings included space for the students to explain what their person was doing in the picture. A checklist to code the drawings was developed and used by two raters. This paper discusses similarities and differences in middle school perceptions of scientists and engineers. Results reveal that the students involved in this study frequently perceive scientists as working indoors conducting experiments. A large fraction of the students have no perception of engineering. Others frequently perceive engineers as working outdoors in manual labor. The findings have implications for the development and implementation of engineering outreach efforts.     

Traditional and flipped classroom approaches delivered by two different teachers: the student perspective

The aim of this investigation was for students to express their views on teaching approaches delivered by two teachers under the perspectives of Higher Order Thinking Skills (HOTS) development, their preferences on learning material and learning activities. First year psychology students followed both the traditional and a flipped classroom approach delivered by two different teachers. One teacher introduced them to social and the other to clinical psychology. 81 students evaluated their experience on social psychology and 119 students on clinical psychology. Although all students had similar preferences on following either the traditional or the flipped classroom approach in both subject domains, a significant difference in students’ views related to the teachers’ contribution to teaching approach, students’ HOTS development and the choice of learning material was observed. This investigation concluded the importance of the intricate relationship between the choice of learning material and activities, and the teacher’s contribution to the flipped classroom approach and their expectation/behaviour toward technology.     

The incidence of severe physical child abuse in Wales

OBJECTIVES: The purposes of this study were: (1) to ascertain the incidence and nature of severe physical child abuse in Wales; (2) to ascertain the incidence of all physical abuse in babies under 1 year of age; and (3) to determine whether child protection registers (CPR) accurately reflect the numbers of children who are physically abused. METHODS: This is a population-based incidence study based in Wales, UK, for 2 years from April 1996 through March 1998. Children studied were under the age of 14 with severe physical abuse consistent with the criminal law level of Grievous Bodily Harm. This included seven categories of injury (death; head injury including subdural hemorrhage; internal abdominal injury; physical injury in Munchausen Syndrome by Proxy including suffocation; fracture; burn or scald; adult bite). Cases were ascertained by a pediatrician surveillance reporting system (WPSU). A criterion for inclusion was multidisciplinary agreement that physical abuse had occurred (at case conference, strategy meeting, or Part 8 Review). The incidence of all babies under 1 year of age with physical abuse was also studied. Ascertainment of babies under the age of 1 year was undertaken from CPR as well as the WPSU. RESULTS: Severe abuse is six times more common in babies [54/100,000/year (95% CI +/- 17.2)] than in children from 1 year to 4 years of age [9.2/100,000 (95% CI +/- 3.6)]. It is 120 times more common than in 5- to 13-year-olds [0.47/100,000 (95% CI +/- 0.47)]. This is mainly because two types of serious abuse (brain injury including subdural hemorrhage and fractures) are more common in babies under the age of 1 year than older children. Using data from two sources (the WPSU and CPRs), the incidence of physical abuse in babies is 114/100,000 (CI 114 +/- 11.8) per year. This equates to 1 baby in 880 being abused in the first year of life. The largely rural Health Authority area in Wales had incidence figures for abuse in babies that were 50% of the three other predominantly urban Health Authority areas. Boys throughout the series were more at risk of being severely abused than girls (p < .025). Only 29% of the babies under 1 year of age on the CPR had actually been injured. Thirty percent of abused babies under the age of 1 year and 73% of severely abused children over the age of 1 year had caused previous concern to health professionals regarding abuse or neglect. Conclusions: Physical abuse is a significant problem in babies under the age of 1 year. Very young babies (under 6 months old) have the highest risk of suffering damage or death as a result of physical abuse. Severe abuse, in particular subdural hematoma and fracture, is much more common in babies than in older children. There is evidence of failure of secondary prevention of child abuse by health professionals, with a greater need to act on concerns regarding abuse and neglect. Interagency child protection work in partnership with parents should focus more on protecting babies under age 1 year from further abuse than on maintenance of the infant within an abusive home. The CPR is not intended as an accurate measure of children suffering abuse. It is a record of children requiring a child protection plan and must not be used as a measure of numbers of abused children.     

Comparability in Balanced Assessment Systems for State Accountability

The purpose of this study was to test methods that strengthen the comparability claims about annual determinations of student proficiency in English language arts, math, and science (Grades 3–12) in the New Hampshire Performance Assessment of Competency Education (NH PACE) pilot project. First, we examined the literature in order to define comparability outside the bounds of strict score interchangeability and explored methods for estimating comparability that support a balanced assessment system for state accountability such as the NH PACE pilot. Second, we applied two strategies—consensus scoring and a rank‐ordering method—to estimate comparability in Year 1 of the NH PACE pilot based upon the expert judgment of 85 teachers using 396 student work samples. We found the methods were effective for providing evidence of comparability and also detecting when threats to comparability were present. The evidence did not indicate meaningful differences in district average scoring and therefore did not support adjustments to district‐level cut scores used to create annual determinations. The article concludes with a discussion of the technical challenges and opportunities associated with innovative, balanced assessment systems in an accountability context.     

Advancing the scholarship of teaching and learning: Reflective portfolio inquiry in higher education ‐ a case study of one institution

Abstract

At a time of intense interest in third level teaching in the Ireland, the UK, and the US, this paper describes an effort underway at University College Cork (UCC) to foster a new kind of scholarship, a scholarship of teaching and learning. Although impelled by the announcement in 2001 of an award for Excellence in Teaching at UCC, the project was framed by ideas first outlined by Ernest Boyer (1990) in his provocative book, Scholarship Reconsidered. This paper describes how Boyer's concept of a “scholarship of teaching” was implemented at UCC through a reflective portfolio inquiry process; presents the value and meanings staff say they find in engaging in a portfolio process; and, concludes with a consideration of the sometimes sobering institutional implications of this work. This case study of an institutions experience is one contribution to an evolving genre currently being invented: a new way of capturing and conveying the knowledge of teaching.     

Development and validation of an instrument to assess primary school students’ perceptions of the learning environment

Over the past 40 years, numerous instruments have been developed to assess the learning environment for a variety of purposes. Despite this plethora of available surveys, there are few that have been developed for use at the primary school level, and even fewer that have been comprehensively validated. This article describes the development of a long-overdue learning environment survey that is suited to primary school students. Evidence to support the validity of the survey, in terms of translation and criterion validity, was guided by Trochim and Donnelly’s (2006) construct validity framework. A pilot test involving one class of 30 students and interviews with six students was used to examine the face validity of individual items. Analyses of data collected from 609 students in 31 classes supported the convergent, concurrent, discriminant and predictive validity, the results of which were all satisfactory. This article is significant in that it provides educators and researchers with a valid tool to assess the learning environment. The instrument, named the Classroom Climate Questionnaire—Primary (CCQ-P), is described and its practical advantages and limitations are discussed.     

The Puzzle of Falling Enrolments in Physics and Chemistry Courses: Putting Some Pieces Together

This paper reports and discusses the principal findings of an Australian study exploring the decisions of high achieving Year 10 students about taking physics and chemistry courses (Lyons, 2003). The study used a ‘multiple worlds’ framework to explore the diverse background characteristics that previous quantitative research had shown were implicated in these decisions. Based on analyses of questionnaire and interview data, the study found that the students’ decisions involved the complex negotiation of a number of cultural characteristics within their school science and family worlds. Many of the students regarded junior high school science as irrelevant, uninteresting and difficult, leaving them with few intrinsic reasons for enrolling in senior science courses. The study found that decisions about taking physical science courses were associated with the resources of cultural and social capital within their families, and the degree to which these resources were congruent with the advantages of choosing these courses. The paper concludes that the low intrinsic value of school science and the erosion of its strategic value contribute to the reluctance of students to choose physical science courses in the senior school.