Nature watch     

T R Shankar Raman 《Resonance》1996,1(7):52-61

Deer are some of the commonest, most visible, and attractive mammals in many forests and grasslands of India. They display a fascinating variety in their antlers, social systems, herd-forming behaviour, and ecology. Unfortunately, several factors have brought some species to the brink of extinction today.  相似文献   

Interpersonal and relational orientation among pre-service educators: differential effects on attitudes toward inclusion of students with disabilities     

Paula T. McWhirter  Joyce A. Brandes  Kendra L. Williams-Diehm  Shannon Hackett 《Teacher Development》2016,20(1):1-17

The purpose of this investigation was to determine the extent to which pre-service educators’ interpersonal characteristics affected their attitudes toward teaching students with disabilities (inclusion), as measured by the FIRO-B and ATIES pre- and post-course. The FIRO-B was administered to assess expressed and wanted aspects of three interpersonal needs: personal inclusion, affection and control. The ATIES was administered to measure attitudes toward classroom inclusion of students with physical, academic, behavioral and social disabilities. Repeated measures ANOVAs revealed a main effect for wanted inclusion and an interaction effect for expressed inclusion and expressed affection on attitudes toward classroom inclusion. Ultimately, these findings reveal how unique relational characteristics may influence preparation initiatives and may encourage consideration of how individual factors may mediate teacher training and preparation.  相似文献   

Using Statistical Control Charts to Analyze Data from Student Evaluations of Teaching     

Neil B. Marks and  Richard T. O'Connell 《Decision Sciences Journal of Innovative Education》2003,1(2):259-272

In this paper, a method for analyzing data from student evaluations of teaching is presented. The first step of the process requires development of a regression model for teacher's summary rating as a function of student's expected grade. Then, two‐sigma control charts for individual evaluation scores (section averages) and residuals from the regression model are used to identify both excellent and poor outcomes. The performance of an individual whose scores are out of control on both charts cannot be explained by expected grade and therefore is worthy of note.  相似文献   

Teenage pregnancy: a small comparison group of known mothers     

Rosenthal TL  Muram D  Tolley EA  Mcalpine J 《Journal of sex education and therapy》1993,19(4):246-250

To obtain confirmation of the findings of the authors' earlier comparison of ever-pregnant and nonpregnant Black high school students from Tennessee, 16 students confirmed to be pregnant were substituted for the 33 subjects in the original study whose pregnancy status was based solely on self-report. The nonpregnant control group of 251 teens was utilized in both analyses. Although the confirmed pregnant group was too small to repeat the regression analysis, striking concordance of findings between the 2 studies emerged for all dependent variables except the Eysenck Personality Questionnaire anxiety scale. The lower anxiety scores recorded among subjects in the original study may be either a statistical artifact or a reflection of the fact that these pregnant teens remained in school while subjects in the second study were enrolled in programs centered around their pregnant status. Sexual activity scores were strong or moderate significantly more often in both groups of pregnant teens compared to their nonpregnant counterparts. Interesting was the finding that 81% of pregnant teens regarded romance novels and soap operas to be accurate portrayals of real-life dating relationships compared to only 49% of nonpregnant teens. On the other hand, only 56% of the pregnant subjects regarded their own relationships to have this romantic quality. In a future study, the role of such uncritical romantic ideals in adolescent pregnancy risk will be investigated in a larger sample.  相似文献   

A content analysis of the presentation of the mole concept in chemistry textbooks     

John R. Staver  Andrew T. Lumpe 《科学教学研究杂志》1993,30(4):321-337

The goal of this study was to examine the means used by textbook authors to introduce, define, and explain the mole concept in high school and introductory college chemistry textbooks. The analysis was framed by four questions:

• 1 How is the mole defined?
• 2 What concepts about the atom are introduced prior to the mole?
• 3 Is Avogadro's constant presented as an experimentally determined value?
• 4 What is the context for introducing the mole?

Twenty-nine high school and introductory college level chemistry texts were examined. After independent reading of appropriate sections of each text, discussion of differences, second or third readings of texts, and subsequent discussions, both authors reach 100% agreement concerning the results. Major conclusions were

• 1 Two ways of defining the mole dominate the texts. One way defines the mole as Avogadro's number (6.02 × 10²³) particles; the other method defines the mole in terms of carbon-12.
• 2 All texts that present a definition in terms of C-12 introduce and define concepts about the atom prior to introducing the mole.
• 3 Most texts at all levels point out that the value 6.02 × 10²³ is an experimentally determined quantity.
• 4 Nearly all texts discuss the mole in relation to die problem of finding a way to count particles that are too small to be directly weighed. Most texts also use a familiar counting unit, such as the dozen, to introduce the mole by analogy.

Four issues were discussed: (a) the defining attributes of the mole concept itself and the cognitive requirements for comprehending the two most frequently used definitions; (b) the connection between the definition of the mole presented in the text and the concepts about atoms that are introduced before the mole concept is developed; (c) the experimental nature of Avogadro's number; and (d) the context or setting for developing the mole concept.  相似文献   

Multiple Dimensions of Instructional Effectiveness in Reading: A Review of Classroom Observation Studies and Implications for Special Education Classrooms     

Yujeong Park  Mary T. Brownell  Elizabeth F. Bettini  Amber E. Benedict 《Exceptionality》2019,27(1):1-17

The purpose of this study was to review and analyze effective classroom reading practices for early graders, using information gathered from the existing content-general and content-specific observation protocols measuring teachers’ classroom reading practices. Dimensions and constructs from 28 observation studies were synthesized to identify classroom instructional practices that have positive impacts on student achievement. Findings revealed that (a) instructional support, emotional support, and classroom management have positive impacts on student achievement, (b) the degree to which instructional practices are effective depends on students’ particular learning needs, and (c) students’ entering skills and primary language are associated with instructional effectiveness in reading. Challenges and implications for future research on effective instructional strategies for special education and the development of an observational protocol for special education teacher effectiveness are discussed.  相似文献   

Science and Mathematics Mentees and Mentors: Who Benefits the Most?     

Rosemarye T. Taylor  Lisa Karcinski 《Mentoring & Tutoring: Partnership in Learning》2016,24(3):213-227

The purpose of our study was to determine the extent to which differences in a mentor model for science and mathematics teachers accounted for variances in mentoring effectiveness and persistence rates of teachers. School district designee, mentor, and teacher perceptions of mentoring support were collected through the use of interviews and surveys and analyzed using the grounded theory approach and open coding. Findings revealed that teachers and mentors recommended that future mentor models provide strong support and more face-to-face meetings. The most common change mentors made was that they incorporated new strategies into their teaching. Findings offer insight for structuring mentor models to increase effectiveness and persistence of teachers and build the capacity of mentors.  相似文献   

Sexua-romanticised pathways of transmasculine college students in the USA     

T. J. Jourian 《Sex education》2018,18(4):360-375

Abstract

Much of the expanding literature positions trans college students as an overly homogenous population, lacking agency and wrought with hardship and tragedy. Drawn from a broader study on transmasculine college students’ conceptualisations of masculinity, this paper draws attention to the multiplicity of transmasculine voices navigating sexuality and romantic relationships. This navigation is embroiled in their negotiations with masculinity, dominance and cissexism, as they chart affirming sexualities and relationships. Participants’ unique and nuanced articulations are suggestive of the gender liberatory possibilities that derive from trans youth’s perspectives.  相似文献   

Blocking in eyelid conditioning: Effect of changing the CS-US interval and introducing an intertriai stimulus     

Robert T. Maleske  Peter W. Frey 《Learning & behavior》1979,7(4):452-456

Kamin’s three-stage blocking paradigm was investigated in rabbit eyelid conditioning, Two manipulations were examined. A change in the CS-US interval from Stage 1 to Stage 2 did not attenuate blocking. The introduction of a salient stimulus during the intertriai interval in Stage 2 also failed to attenuate blocking. The first result is not consistent with Kamin’s interpretation of the blocking effect in terms of US surprisingness. The second resuit is inconsistent with a prediction based on the Rescorla-Wagner model.  相似文献   

Balancing varied assessment functions to attain systemic validity: Three is the magic number     

Daniel T. Hickey  Steven J. Zuiker  Gita Taasoobshirazi  Nancy Jo Schafer  Marina A. Michael 《Studies in Educational Evaluation》2006,32(3):180

Accountability-oriented reforms demand immediate and continual gains on achievement test, for all students, and without diminishing other outcomes or undermining instruction. This paper describes a framework for aligning classroom assessment and external testing with the aim of negotiating these seemingly contradictory goals. The framework varies the sensitivity to instruction and the representations of knowledge across approaches to assessment. Cycles of design- based studies successively refine relationships between a curriculum and the frame that each assessment provides. Doing so, we argue, leverages the unique formative and summative balance across assessments in order to scaffold learning and demonstrate the “consequential” validity of our strategy without compromising curricula, instruction, or the “evidential” validity that warrants their continued use.  相似文献