Chat as Media in Exams

The paper reportsdocuments our experiences using chat as a medium for exams in a so-called flexible education. The type of education is adult learning and planning of education. The experiences show some interesting results. It is a very different way of communicating, which leaves a new level of initiative and control to the student. A new way of assessment has qualified the study process, and this work has examined one way to do virtual assessment.     

Teaching ‘Instant Experience’ with Graphical Model Validation Techniques

Graphical model validation techniques for linear normal models are often used to check the assumptions underlying a statistical model. We describe an approach to provide ‘instant experience’ in looking at a graphical model validation plot, so it becomes easier to validate if any of the underlying assumptions are violated.     

Tasks and trajectories in learning to teach

University‐based teacher‐education programmes in the USA confront mounting pressure to demonstrate that graduates will have a significant and positive impact on student achievement. Such pressure has forced teacher educators to wrestle with the question of what constitutes compelling evidence that teacher candidates will indeed have such an impact. This paper presents the deliberations and resulting investigation of a team of university faculty members seeking to account for preservice elementary‐school teachers’ learning and development. It offers a preliminary articulation of a trajectory of learning, and a critique of the tasks and the programmatic experiences from which this trajectory is constructed.     

Assessment In Practice: An inspiration from apprenticeship

The paper investigates the relationship between assessment and learning through an empirical study of apprenticeship training. The paper suggests that well‐established modes of learning, which facilitate meaningful assessment in apprenticeship training, present an “antidote” to a traditional emphasis on assessment as selection and control. In contrast to rejection of apprenticeship modes of assessment as being inappropriate and obsolete at the present time, the paper suggests that the concept of apprenticeship assessment can be seen as a highly attractive and effective alternative to current assessment practices in both schools and workplaces. Taking a situated and relational perspective on knowledge and learning, we argue that assessment practices should focus on contextually‐anchored reviews of the core competencies of the person. This contextual assessment contrasts with an emphasis on assessment as essentially controlling and selecting students for further education and, on the other hand, with assessment as a process of self‐monitoring and self‐reflection.     

Gender-related beliefs of teachers in elementary school mathematics

In this quantitative study, questionnaire data of fifty-two third- and fourth-grade teachers were analyzed using MANOVA tools. Teachers were asked to consider boys' and girls' achievement in mathematics, giving their views on the reasons for the students' successes and failures and describing their learning characteristics. Teachers thought that their average achieving girls were less logical than equally achieving boys. The girls were thought to profit less than boys from additional effort and to exert relatively more effort to achieve the level of actual performance in mathematics. Teachers rated mathematics as more difficult for average achieving girls than for equally achieving boys. With regard to girls, teachers attributed unexpected failure more to low ability and less to lack of effort than with boys. The results increase our understanding of stereotypical teacher beliefs that might help explain gender differences in achievement and in subsequent occupational choices.This revised version was published online in September 2005 with corrections to the Cover Date.     

Klassenwiederholen in PISA-I-Plus: Was lernen Sitzenbleiber in Mathematik dazu?

This study analyses the effects which repeating a class has on ninth grade students’ development of mathematical competency. The following research questions were addressed: How many students repeat grades in the different types of schools? How do students who repeat a grade differ from those who do not in their performance and background characteristics? How much extra mathematics do students repeating a grade learn in one school year? What are the differences between various types of school? Can students with poor mathematics grades in particular profit from repeating a grade? The sample is a sub-sample of the PISA-I-Plus study and comprises N = 360 ninth grade students. The total sample of PISA-I-Plus is representative for all ninth/tenth grade students from the different school types in Germany. The data survey was carried out in the ninth grade and then repeated after the students had repeated a year. The results document differences in the amount of grade repeat quotas between types of school. Furthermore, compared to students not repeating, those repeating a grade had lower mathematics (d = 1.02) and german (d = 1.14) grades, a lower level of mathematical literacy (d = 0.51), and lower test results with regard to basic cognitive abilities (d = 0.32). In terms of the development of mathematical literacy, the students repeating a grade could improve by an average of 23 points (d = 0.27) on the PISA mathematics scale. However, the results identify 38 percent of students repeating a grade who do not make any significant improvement in mathematics or even get worse. A differentiation according to school types shows that students repeating a grade in integrated comprehensive secondary schools and in schools with several educational levels in particular do not, on average, show any noteworthy improvement in their mathematical literacy. The analysis of the school grades received in mathematics shows that students whose mathematics grades are unsatisfactory do not benefit more from repeating a grade than students whose mathematics performance has been rated as being “satisfactory” or better. The article concludes with a discussion of the possible consequences of changing the way in which repetitions of grades are dealt with.     

On the influence of the architecture of poly(ethylene glycol)-based thermoresponsive polymers on cell adhesion

Thermoresponsive polymer surface coatings are a promising tool for cell culture applications. They allow for a mild way of cell detachment that preserves the activity of membrane proteins—a prerequisite for reliable cell analysis. To enlarge the application range of these coatings to cells with different adhesion properties, we synthesized various novel poly(ethylene glycol)-based thermoresponsive polymers and describe how (i) their chemical structure and (ii) their surface density affect their efficiency. In order to quantify the influence of both factors, the time for cell spreading and rounding efficiency were observed. As a result, efficiency of cell rounding, which is closely correlated to cell detachment, is less affected by both factors than the time needed for cell spreading. This time can effectively be adjusted by the molecular architecture which includes the length of the polymer backbone and the side chains. Based on this work, recommendations are given for future optimization of functionality of thermoresponsive polymer coatings for cell culture applications.     

Learning-based curriculum development

This article is written to inspire curriculum developers to centre their efforts on the learning processes of students. It presents a learning-based paradigm for higher education and demonstrates the close relationship between curriculum development and students’ learning processes. The article has three sections: Section “The role of higher education (HE) institutions” presents a discussion of the role of higher education in the knowledge society. Section “Contextual learning” presents the paradigm of contextual learning which we see as a useful foundation for curriculum development. Section “Curriculum development in practice—the BETA course” shows how a particular course in Business Economic Theory and Analysis has been developed using this paradigm. The article will be of interest to all academics interested in students’ learning processes but is especially relevant to those responsible for curriculum development.     

Teachers' Gender Stereotypes as Determinants of Teacher Perceptions in Elementary School Mathematics

This study analyzes the hypothesized biasing effect of teachers' gender stereotypes on their impressions of their students' competence and effort in mathematics. 48 teachers participated in the study and responded to the questionnaires concerning perceptions of about 300 of their third and fourth grade students. In general, teacher perceptions were consistent with stereotypes of gender differences: Boys have more developmental resources in mathematics. Furthermore, this bias in teacher perceptions of their students' resources in math is linked to the teacher's own category — based, gender role stereotypic beliefs regarding the general distribution of math talent between boys and girls. The finding is moderated by the student's performance level: It only holds for average and low achieving but not for high achieving boys and girls. In this way, students' performance level is an essential mediator-variable in the transmission of teachers' gender stereotypes.This revised version was published online in October 2005 with corrections to the Cover Date.     

Ein Modell zur Erfassung naturwissenschaftlicher Kompetenz im Kindergarten

Preschool education, including scientific literacy, has recently been receiving increased attention in Germany??s educational system. However, only a few studies have investigated scientific literacy in the preschool age so far. In this paper a test instrument to assess scientific literacy in five year old children is presented. The topic of the test is water, its physical states (solid, liquid and gaseous), changes of state and solutions in water. The test was administered as a structured interview and high reliability and internal validity were obtained. The children investigated show a great variance in their competencies which can be ascribed to four different levels of competence.