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Lia Midori Nascimento Meyer Gilberto Cafezeiro Bomfim Charbel Niño El-Hani 《Science & Education》2013,22(2):345-374
It is widely acknowledged in the literature on philosophy of biology and, more recently, among biologists themselves that the gene concept is currently in crisis. This crisis concerns the so-called “classical molecular concept”, according to which a gene is a DNA segment encoding one functional product, which can be either a RNA molecule or a polypeptide. In this paper, we first describe three categories of anomalies that challenge this way of understanding genes. Then, we discuss proposals for revising the gene concept so as to accommodate the increasingly known complexity of genomic architecture and dynamics. Our intention is to provide an informative overview of recent proposals concerning how we should conceive of genes, which are probably not very familiar to many science educators and teachers, but can bring relevant contributions to genetics teaching, in particular, to a more critical treatment of genes and their role in living systems. 相似文献
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Jerome V. D'Agostino Megan E. Welsh Adriana D. Cimetta Lia D. Falco Shannon Smith Waverely Hester VanWinkle 《教育实用测度》2013,26(1):1-21
Central to the standards-based assessment validation process is an examination of the alignment between state standards and test items. Several alignment analysis systems have emerged recently, but most rely on either traditional rating or matching techniques. Little, if any, analyses have been reported on the degree of consistency between the two methods and on the item and objective characteristics that influence judges' decisions. We randomly assigned judges to either rate item-objective links or match items to objectives while reviewing the 2004 Arizona high school mathematics standards and assessment. Across items we found moderate convergence between methods, and we detected apparent reasons for divergently scored items. We also found that judges relied on item and objective content and intellectual skill features to render decisions. Based on our evidence, we contend that a thorough alignment analysis would involve judges using both rating and matching, while focusing on both content and intellectual skill. The findings have important implications for states when examining the alignment between their standards and assessments. 相似文献
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Lia M. Daniels Cheryl Poth Chiara Papile Marnie Hutchison 《Educational Assessment》2013,18(2):139-158
Building on Snow's (1989) idea of 2 pathways to achievement outcomes, a performance and a commitment pathway, this study examined how cognitive and motivational factors associated with each of these pathways, respectively, contributed to the prediction of achievement outcomes in science. The sample consisted of 491 10th- and 11th-grade high school students. Results of hierarchical regression analyses showed that (a) students' cognitive abilities were the strongest predictors of their performance in science as measured by standardized test scores; (b) motivational processes enhanced the predictive validity for science test scores and grades beyond the variance accounted for by ability; and (c) motivational processes were the strongest predictors of students' commitment to science in the form of situational engagement and anticipated choices of science-related college majors and careers. These results are consistent with Snow's (1989) conjecture that both performance and commitment pathway-related factors are necessary for understanding the full range of person-level inputs to achievement outcomes. 相似文献
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Alexandra Eisler Lia Avellino Deborah Chilcoat Karen Schlanger 《American journal of sexuality education》2016,11(4):331-344
The Keep It Simple package, which includes a short animated film (available online for streaming or download), a lesson plan, and supporting materials, was designed to be used with adolescents ages 15–19 to empower them to seek sexual and reproductive health care, and emphasize the availability of long-acting reversible contraception (LARCs). The materials in the package can be used together to deliver a 45 minute educational session that provides information to teens about the sexual health services available to them at local health centers, their rights to obtain those services, and how they can link to high quality and adolescent friendly sexual health care. The animation can also be used as a standalone product. All components of the Keep It Simple package are available for free and are also offered in Spanish as No te compliques. 相似文献
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During their education, preservice teachers begin to assume professional responsibilities and gain pedagogical knowledge. However, the question remains whether preservice teachers intend to use instructional practices that are effective in meeting their assumed responsibilities. Thus, we examined the concordance between preservice teachers' responsibilities and their intended instructional practices. At the start of the semester there was no concordance. At the end of the semester there was high concordance in two instances: Responsibility for student motivation negatively predicted performance goal-oriented practices; responsibility for teaching positively predicted rationales and negatively predicted extrinsic rewards. Instructional practices associated with responsibility for achievement and motivation were not concordant. We discuss how preservice teachers understand these responsibilities and their readiness to adopt evidence-based practices. 相似文献
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Lia E. Sandilos Lauren M. Cycyk Carol Scheffner Hammer Brook E. Sawyer Lisa López Clancy Blair 《Early education and development》2013,24(8):1111-1127
Research Findings: This study investigated the relationship of preschool teachers’ self-reported depressive symptomatology, perception of classroom control, and perception of school climate to classroom quality as measured by the Classroom Assessment Scoring System Pre-K. The sample consisted of 59 urban preschool classrooms serving low-income and linguistically diverse students in the northeastern and southeastern United States. Results of hierarchical linear modeling revealed that teachers’ individual reports of depressive symptomatology were significantly and negatively predictive of the observed quality of their instructional support and classroom organization. Practice or Policy: The findings of this study have implications for increasing access to mental health supports for teachers in an effort to minimize depressive symptoms and potentially improve classroom quality. 相似文献
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Lia Voerman Paulien C. Meijer Fred Korthagen Robert Jan Simons 《Teachers and Teaching》2013,19(8):990-1009
This study describes an evaluation of a theory-based trajectory for professional development called FeTiP (Feedback-Theory into Practice) that aims to have an observable effect on teacher classroom behavior. FeTiP is a multicomponent trajectory for professional development and combines several types of interventions. Its goal is to help teachers expand their feedback behavior in the classroom to provide more, and more effective (i.e. learning-enhancing), feedback. We first describe the foundation of FeTiP, with a central focus on how classroom behavior can be influenced by a multicomponent trajectory of professional development, as this is often a major aim in initiatives for the professional development of teachers but is the most difficult to establish. We describe the effects of FeTiP on the feedback behavior of teachers and attempt to explain why these effects occurred. 相似文献