Comparison of 3D reconstructive technologies used for morphometric research and the translation of knowledge using a decision matrix

The use of three‐dimensional (3D) models for education, pre‐operative assessment, presurgical planning, and measurement have become more prevalent. With the increase in prevalence of 3D models there has also been an increase in 3D reconstructive software programs that are used to create these models. These software programs differ in reconstruction concepts, operating system requirements, user features, cost, and no one program has emerged as the standard. The purpose of this study was to conduct a systematic comparison of three widely available 3D reconstructive software programs, Amira^®, OsiriX, and Mimics^®, with respect to the software's ability to be used in two broad themes: morphometric research and education to translate morphological knowledge. Cost, system requirements, and inherent features of each program were compared. A novel concept selection tool, a decision matrix, was used to objectify comparisons of usability of the interface, quality of the output, and efficiency of the tools. Findings indicate that Mimics was the best‐suited program for construction of 3D anatomical models and morphometric analysis, but for creating a learning tool the results were less clear. OsiriX was very user‐friendly; however, it had limited capabilities. Conversely, although Amira had endless potential and could create complex dynamic videos, it had a challenging interface. These results provide a resource for morphometric researchers and educators to assist the selection of appropriate reconstruction programs when starting a new 3D modeling project. Anat Sci Educ 6: 393–403. © 2013 American Association of Anatomists.     

A Social-Studies Unit that Developed Pupils’ Powers of Problem Solving

This article reports the author's experiences using graphic novels with pre-service teachers in a young adult literature course. Drawing on critical response papers two students composed after reading Pride of Baghdad, a graphic novel by Brian K. Vaughan and Niko Henrichon, the author argues that when readers possess the background knowledge needed to approximate the role of the implied reader—that is, the imaginary audience for whom authors envision themselves writing—they are capable of engaging with graphic novels in ways that readers who lack experience with the form, or who question its literary merit, are not.     

Preschool children's math-related behaviors mediate curriculum effects on math achievement gains

This study used a mediational model to examine the effect of curriculum condition on student behaviors and how those behaviors related to math achievement gains. The student behaviors examined were children's participation in learning-related activities, talking during learning activities, and level of engagement with the materials. Conducted as part of a larger project involving the implementation and evaluation of a preschool mathematics curriculum, this study involved twenty urban prekindergarten sites with 57 classrooms randomly assigned to the new curriculum or a practice-as-usual condition. The final analytic sample included 675 children, predominately from low-income homes. Results showed that the greater gains made by children in curriculum classrooms were mediated by the number of times children were observed focused on mathematics and the number of times they were observed talking during mathematics. Findings from this study demonstrate the importance of focusing on children's actual responses to a new curriculum in determining its effects.     

Beyond an “Either–Or” approach to home- and center-based child care: Comparing children and families who combine care types with those who use just one

Most research focuses on preschoolers’ primary non-parental child care arrangement despite evidence that multiple arrangements are relatively common. Using the nationally-representative Early Childhood Longitudinal Study, Birth Cohort, we compare characteristics and outcomes of families whose 4-year olds attend both home- and center-based child care with those who attend either home- or center-based care exclusively or receive no non-parental care at all. We find that about one fifth of 4-year olds attend both home- and center-based child care. Mothers’ priorities for care (getting their child ready for school, matching their families’ cultural background) and perceptions of good local care options predict their combining home- and center-based care. Preschoolers score higher on reading and math assessments, on average, when they attend centers, alone or in combination with home-based child care, than when they are cared for only in homes, either by their parents or by others. Preschoolers’ average socioemotional outcomes generally do not differ between families who do and who do not combine care types. Implications for research and policy are discussed.     

Self-concept of students in higher education: are there differences by faculty and gender?

Many studies examine student self-concept during compulsory schooling but few have explored the self-concept of students in higher educational settings. The current study examined self-concept by faculty and gender among higher education students in New Zealand. Participants were 929 undergraduate students from a large New Zealand university. The results showed some differences in verbal and maths self-concept by faculty. Generally, students in faculties teaching subjects more reliant on maths skills had higher maths self-concept than those in faculties where facility in verbal skills was important. The opposite results were found for verbal self-concept. No overall gender differences were found for general, academic, verbal and maths self-concept although a statistically significant difference was found for problem-solving self-concept. This finding suggests students’ choice of faculty may be based on perceptions of their skills and capabilities in the various fields, irrespective of gender.