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41.
Students with disabilities often struggle with writing tasks. In order to improve the written expression performance of high school students with deficits in written expression, a Direct Instruction writing program was implemented. The participants were six high school students in programs for individuals with learning disabilities. Three of the six students were served in programs for students who are English Language Learners. Using a multiple‐probe across‐participants design, the effect of the writing program was examined. The intervention was implemented over a 5‐week period with maintenance checks conducted 2 and 4 weeks after the termination of instruction. Results were variable, but there appeared to be a positive trend in student writing performance as measured by correct word sequence, length of text, and the TOWL‐3. Implications for practice and future directions are also provided.  相似文献   
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This paper presents a rationale for utilizing HPS to teach physics and the NoS developed in the course of a project funded by the European Union. A core feature of this approach is formed by the development of historical case studies for the use in lessons. Furthermore, the learners?? perspectives are explicitly taken into account. Teaching methods comprise student-centered activities as creative writing for understanding science and scientists and role-play activities. Emphasis is laid on experimental work which is performed with the help of true-to-the-original replications of historical apparatus, especially built for this purpose. A new characteristic for NoS learning is introduced, namely the reflection corner giving the opportunity to explicitly discussing the relationship between history, knowledge acquisition, and the application of scientific findings. In order to make use of the special skills, creative potentials and experiences of teachers a symbiotic strategy for the development and evaluation process of the teaching material was adopted where a close and long-standing cooperation between science teachers and science educators could be established. On this basis the German partners were able to complete numerous case studies from the fields of mechanics, electricity, magnetism and heat.  相似文献   
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The article asks about the minimal number of persons required for achieving a probability 1/2 that a . At least two share a birthday, b . At least one shares the reader's birthday. A basic question about the necessary number of checks underlies both problems.  相似文献   
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Two contestants debate the notorious probability problem of the sex of the second child. The conclusions boil down to explication of the underlying scenarios and assumptions. Basic principles of probability theory are highlighted.  相似文献   
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Although much is known about the performance of recent methods for inference and interval estimation for indirect or mediated effects with observed variables, little is known about their performance in latent variable models. This article presents an extensive Monte Carlo study of 11 different leading or popular methods adapted to structural equation models with latent variables. Manipulated variables included sample size, number of indicators per latent variable, internal consistency per set of indicators, and 16 different path combinations between latent variables. Results indicate that some popular or previously recommended methods, such as the bias-corrected bootstrap and asymptotic standard errors had poorly calibrated Type I error and coverage rates in some conditions. Likelihood-based confidence intervals, the distribution of the product method, and the percentile bootstrap emerged as leading methods for both interval estimation and inference, whereas joint significance tests and the partial posterior method performed well for inference.  相似文献   
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