Instructions are given for building physical scale models of ordered structures of B-form DNA, protein [alpha]-helix, and parallel and antiparallel protein [beta]-pleated sheets made from colored computer printouts designed for transparency film sheets. Cut-outs from these sheets are easily assembled. Conventional color coding for atoms are used…

The Draw an Engineer Test (DAET) is a common measure of students' perceptions of engineers. The coding systems currently used for K-12 research are general rubrics or checklists to capture the images presented in the drawing, which leave out some of the richness of students' perceptions, currently only captured with an accompanying student…

The use of problem-solving strategies by 59 deaf and hard of hearing children, grades K-3, was investigated. The children were asked to solve 9 arithmetic story problems presented to them in American Sign Language. The researchers found that while the children used the same general types of strategies that are used by hearing children (i.e.,…

The purpose of this qualitative study was to analyze the self initiated conversations held by school principals on web2.o platforms, such as blogs, through the lens of current leadership standards. The online writings of thirteen school principals were analyzed using grounded theory techniques (Strauss and Corbin, 1998) to elucidate emerging…

This exploratory study assessed the associations of age, gender, and a school climate of solidarity and pride with adolescents' endorsements of democratic regime change. Middle- and high-school students (N = 273) in the United States responded to three vignettes concerning how a society should transition from dictatorship to democracy and…

This article aims at validating a coding scheme designed to investigate the precursors of academic language occurring in early caretaker-child interactions. Exposure to the academic dimensions of language is an important asset for children to be successful in academic settings. The proposed analytical framework, based on systemic functional…

In most post-secondary Spanish language programs in the U.S., heritage language (HL) learners and second-language (L2) learners are enrolled together, in the same courses (Ingold, Rivers, Tesser, & Ashby, 2002). Nevertheless, there is scant empirical research on what actually goes on in these classrooms and what the nature of learner-learner…

In the literature, there has been a focus on the effectiveness of larger sized electronic brainstorming groups; however, mechanisms for its effectiveness still remain open to question and some methodological concerns (e.g., the evaluation of ideas and the typing speed, and the use of different formats) continue to be important problems. To…

The purpose of this qualitative study, "Professional development for teachers working with culturally and linguistically diverse students: A qualitative study of teacher perceptions," was to investigate general educators' perceptions of existing professional development activities in order to identify program attributes they perceive as likely to…

With the increased demands for school accountability from the federal, state, and district levels, many school administrators report limited time available for the critical task of classroom observations. This research examined the relationship between classroom observations using a walk-through procedure and student performance. Building…

Mandarin Chinese and many other tonal languages use tones that are defined as specific pitch patterns to distinguish syllables otherwise ambiguous. It had been shown that tones carry at least as much information as vowels in Mandarin Chinese [Surendran et al., 2005]. Surprisingly, though, many speech recognition systems for Mandarin Chinese have…

Inferences are important because not everything in the text is explicit. Therefore, the reader must generate inferences that fill in "missing" information. Various factors can influence inference processes, including those that are related to the text and reader. Moreover, these two factors are likely to interact in highly complex ways,…

In this exploratory case study, 4 early intervention providers' use of collaborative intervention strategies and everyday activities was examined in relation to the participation of a small group of Latina mothers (n = 10) during home visits over a 6-month period in an urban community. Videotapes (n = 40) of home visits were clustered into more…

Online discussion groups have become a resource for teachers seeking ongoing professional development. Despite their popularity, there has been little systematic investigation into the nature and quality of the dialogue that occurs within an unstructured virtual community to which participants voluntarily subscribe. In this study, we explored how…

Forty-eight child psychotherapy outcome studies offering direct comparisons of an individual child treatment group to a combined parent-child/family therapy treatment group were included in this meta-analytic review. Results indicate that combined treatments produced a moderate effect beyond the outcomes achieved by individual child treatments,…