A Collaboration between ESL and Regular Classroom Teachers for ELL Students’ Literacy Development

This article presents a teacher‐research project on collaboration between an English as a Second Language (ESL) teacher and a fourth‐grade classroom teacher to enhance the literacy development of English language learners (ELLs). It illustrates how two teachers worked closely in helping their ELL students develop their writing skills and the benefits both the students and teachers gained from this collaboration.     

Development and validation of the environmental literacy instrument for adolescents

Environmental education (EE) practitioners struggle to consistently and rigorously evaluate their programs, particularly when little time is available for evaluation. Since environmental literacy (EL) is the goal of environmental education, a very short EL instrument – amenable to use when longer tests are not practical for practitioners – would address an important EE need. We describe the development and validation of the Environmental Literacy Instrument for Adolescents (ELI-A) that is short enough for use in field applications (i.e. 5–15 min) and measures four domains of environmental literacy (ecological knowledge, hope, cognitive skills, behaviour). Factor analysis, item response theory, and concurrent validity tests were used in the validation process. Structural equation modelling supported the fit between the ELI-A and prevailing EL frameworks. The results support a valid and reliable instrument that is short enough for practical use but comprehensive in measuring four primary components of EL. This instrument could help fulfil the call to evaluate EE programming in both formal and informal settings.     

The phonological awareness relation to early reading in English for three groups of simultaneous bilingual children

Reading and Writing - Phonological awareness is critical for early reading acquisition across alphabetic as well as non-alphabetic languages. The grain size of phonological awareness varies with...     

1997年中国成年人体质监测公报

监测未用随机整群取样方法,监测对象是 19个省、区、市的年龄为 18～60岁(女 55岁)的公民,最终参加运算的样本为 105 328人,获得 3 007 142个有效数据。主要结果为:男子平均身高为169.2 cm,女子为 158.6 cm;男子平均体重为 66.5 kg,女子为 56.8 kg。50岁前体重、相对体重随年龄增大,50岁后略减;北方人身材高大,南方人身材瘦小;东部地区人群体质好于中、西部。中国成年人体质方面存在的问题主要是有28.6％的人未达测定合格标准、开始向肥胖型发展等。提出改善中国成年人体质状况的主要措施主要有加强宣传,提高认识,扩大监测,吸引成年人参加体育活动等。     

Limit cycle analysis of nonlinear sampled-data systems by gain-phase margin approach

This work analyzes the limit cycle phenomena of nonlinear sampled-data systems by applying the methods of gain-phase margin testing, the M-locus and the parameter plane. First, a sampled-data control system with nonlinear elements is linearized by the classical method of describing functions. The stability of the equivalent linearized system is then analyzed using the stability equations and the parameter plane method, with adjustable parameters. After the gain-phase margin tester has been added to the forward open-loop system, exactly how the gain-phase margin and the characteristics of the limit cycle are related can be elicited by determining the intersections of the M-locus and the constant gain and phase boundaries. A concise method is presented to solve this problem. The minimum gain-phase margin of the nonlinear sampled-data system at which a limit cycle can occur is investigated. This work indicates that the procedure can be easily extended to analyze the limit cycles of a sampled-data system from a continuous-data system cases considered in the literature. Finally, a sampled-data system with multiple nonlinearities is illustrated to verify the validity of the procedure.     

Taking the risk to engage in race talk: professional development in elementary schools

Developing public education where every child has the right to learn requires that teachers pay attention to and engage in race talk – open discussion about race, social construction of race, and racism. While it is clear that children engage and reflect critically about these aspects of race even at a young age, teachers rarely engage in race talk with them. In this study, an African-American preservice teacher and a White teacher educator explore how African-American, Polynesian, and White in-service teachers, participating in Courageous Conversations professional development, address or avoid race talk in their elementary schools through the lens of Critical Race Theory (CRT) and what risks they take when they do. Findings, through in-depth, semi-structured interviews, demonstrate that (1) racism was observed and/or experienced by all teachers in elementary schools; (2) lived racial experiences impacted teachers’ approach to conversations about race; (3) creating an open space was crucial for race conversations; (4) Courageous Conversations provided a ‘new language’ to talk about race; and (5) administrative support facilitated more attention to race. Findings indicate the road to greater equity in schools requires more professional development about race talk in elementary schools.     

Who Benefits Most from a University Degree?: A Cross-National Comparison of Selection and Wage Returns in the US,UK, and Germany

Recent research on economic returns to higher education in the United States suggests that those with the highest wage returns to a college degree are least likely to obtain one. We extend the study of heterogeneous returns to tertiary education across multiple institutional contexts, investigating how the relationship between wage returns and the propensity to complete a degree varies by the level of expansion, differentiation, and cost of higher education. Drawing on panel data and matching techniques, we compare findings from the US with selection into degree completion in Germany and the UK. Contrary to previous studies, we find little evidence for population level heterogeneity in economic returns to higher education.     

Using an interactive ubiquitous learning system to enhance authentic learning experiences in a cultural heritage course

This paper proposes a novel interactive ubiquitous learning system (IULS) for authentically teaching a cultural heritage course and imparting relevant concepts to students. Experimental results demonstrated that learning performance was significantly improved after students used the IULS. This study also demonstrated that students using the IULS achieved superior results to those achieved using conventional teaching models. No gender bias affecting the performance of students in the experimental group was observed because each student consistently performed to a higher standard on the learning tasks compared with students in the control group, particularly in learning comprehension-related content. The IULS was more effective in enhancing the overall learning performance of students exhibiting different cognitive styles in liberal arts education courses. Furthermore, the results of a survey on Instructional Materials Motivation Survey revealed that Relevance was the most highly rated motivational factor among students who used the IULS, suggesting that students were motivated to use the IULS. Thus, we believe that a liberal arts education supplemented with the IULS yields a significant learning advantage for students by improving overall learning performance and motivation.     

Taiwanese Junior High School Students’ Understanding about the Validity of Conditional Statements

This research was designed to study Taiwanese junior high school students understanding about the validity of conditional statements. Distinguishing between validity and truth is a crucial topic in mathematical reasoning and argumentation but has been always neglected in the mathematics curriculum at junior high school level of schooling. The aims of the survey were (1) to find out the methods Taiwanese junior high school students used when conducting mathematical justification on conditional statements; (2) to examine whether the students could distinguish between a statement and its converse statement; (3) to analyse whether the correctness of a conditional statement influenced the students to conduct mathematical reasoning and argumentation. Approaching the three aims of the survey is expected to give some insights into the issue of whether the students could distinguish between the validity of conditional statements and the truth of assertions. Several thousand students from different schools which were randomly sampled from within six geographically diverse (regions of Taiwan) were administered a test on either algebra/number-pattern or geometry corresponding to their respective grades. The main results were (1) the methods the students used when conducting mathematical justifications on conditional statements were called producing (supporting- or counter-) example(s), analytical narrative, and analytical formal; (2) over a third of those students, who considered the given conditional statement to be valid or invalid, proposed supporting- or counter-example(s), respectively; (3) over half the students considered the statement and its converse to be the same; (4) students reasoning performance was influenced by their opinions of the correctness of the conditional statements. These results seem to lead to the conclusion that most of these students could not distinguish between the validity of conditional statements and the truth of assertions.