Children's alternative frameworks: Should they be directly-addressed in science instruction?

A study was conducted to determine the effectiveness of in-depth, conceptually integrated instruction delivered via a videodisc program in eliminating children's alternative frameworks in science. Prior to instruction, pupils in two eighth-grade science classes, one of higher ability and one of lower ability, were interviewed to document their alternative frameworks (informal knowledge) for explaining two science phenomena. Interviews after instruction showed that students of both ability groups did not retain their alternative frameworks. This contradicts other research findings that children's alternative frameworks are extremely resistant to change and must be directly addressed during instruction for conceptual change to occur. A well-designed science curriculum that was intelligible, plausible, and fruitful, but did not directly address alternative frameworks during instruction, changed 92% of the alternative frameworks held by students to scientific understandings.     

Native Waters: Integrating Scientific and Cultural Ways of Knowing about Water

Away needs to be found to make young people want to learn the importance of water, before it is too late and our information is lost forever. —Rosebud Sioux elder.     

Time and the Environments of Schooling

In this article, we explore questions related to the meaning and nature of time in schooling environments. Cultural, historical and ecological images inform our thinking, using concepts from postmodern perspectives such as semiotics and critical pedagogy. We begin by reviewing the historical development of conceptions of time and describe what is meant by framing our research and thinking in a postmodern vision of time. We examine ideas about other potential meanings of time using semiotic and critical pedagogical interpretations. As the research and recommendations are of value to professional educators and policy makers, we discuss the value of nurturing intellectual relationships, the value of collaboration, and the importance of developing new ways to give voice to teachers to allow them to articulate their views about what is most meaningful and significant in the organization of learning environments.     

Single-document and multi-document summarization techniques for email threads using sentence compression

We present two approaches to email thread summarization: collective message summarization (CMS) applies a multi-document summarization approach, while individual message summarization (IMS) treats the problem as a sequence of single-document summarization tasks. Both approaches are implemented in our general framework driven by sentence compression. Instead of a purely extractive approach, we employ linguistic and statistical methods to generate multiple compressions, and then select from those candidates to produce a final summary. We demonstrate these ideas on the Enron email collection – a very challenging corpus because of the highly technical language. Experimental results point to two findings: that CMS represents a better approach to email thread summarization, and that current sentence compression techniques do not improve summarization performance in this genre.     

An Approach to Consider the Semiotic Messages of School Science Learning Culture

Journal of Science Teacher Education -     

Salient Predictors of School Dropout among Secondary Students with Learning Disabilities

The purpose of this study was to identify the unique contributions of a comprehensive set of predictors and the most salient predictors of school dropout among a nationally representative sample of students with learning disabilities (LD). A comprehensive set of theoretically and empirically relevant factors was selected for examination. Analyses were conducted to explore the unique contribution and relative importance of these factors in predicting dropout. Results indicated that the most salient predictors of school dropout included a set of malleable individual (grades, and engagement in high‐risk behaviors), family (parent expectations), and school (quality of students’ relationship with teachers and peers) factors. The findings validate multicomponent dropout prevention and intervention models for this population while at the same time illuminating specific key components that appear to be of particular importance in school dropout among students with LD.     

The impact of an early intervention home visiting experience on student learning in a dual early childhood/special education graduate preservice program

Home visiting is a primary service delivery approach to promote young children’s development and support families. Early Intervention professionals are expected to partner with families to create effective learning experiences in the daily context of routine family life. Concerns about early childhood (special) educators’ readiness to take on this partnership role have been voiced, suggesting explicit learning opportunities are needed within preservice preparation programs. This study explored the impact of an introductory assignment analyzing a videotaped home visit on preservice Early Childhood Education/Early Childhood Special Education students’ learning about home visiting practices. Implications for scaffolding home visiting experiences in preservice preparation are discussed.