DEVELOPMENT, EVALUATION, AND VALIDATION OF A PAPER-AND-PENCIL TEST FOR MEASURING TWO COMPONENTS OF BIOLOGY TEACHERS’ PEDAGOGICAL CONTENT KNOWLEDGE CONCERNING THE “CARDIOVASCULAR SYSTEM”

One main focus of teacher education research concentrates on teachers’ pedagogical content knowledge (PCK). It has been shown that teachers’ PCK correlates with teaching effectiveness as well as with students’ achievement gains. Teachers’ PCK should be analyzed as one of the main important components to evaluate professional development programs. On this account, it is necessary to develop standardized measures of biology teachers’ topic-specific PCK that are labor-efficient. This paper presents a study on the development, evaluation, and validation of a paper-and-pencil test to measure biology teachers’ declarative PCK on the topic of blood and the human cardiovascular system. The development of the test was based, among other considerations, on a review of research literature on PCK and an analysis of 50 videotaped biology lessons. The final test instrument was comprised of 15 items distributed across 2 scales. The findings of the main study—with 93 preservice and in-service biology teachers and 12 biologists—confirmed that this measure of biology teachers’ declarative PCK was reliable, objective, and valid. In-service biology teachers scored higher on the test than preservice teachers (effect size Cohen’s d, 0.65) on one hand and, also, than biologists (Cohen’s d, 1.00) on the other hand. Future versions of this test should explore enlarging the scales and measuring procedural aspects of PCK.     

Ohne Schulabschluss in die Berufsausbildung: Ergebnisse einer Längsschnittuntersuchung

Young people who leave school without obtaining a secondary school certificate bear an increased risk of not completing vocational training and being excluded from stable employment in their working life. However, some of these young people do achieve access to vocational training and employment. Based on a longitudinal study of school-to-work transitions of a representative sample of graduates from Praxisklassen in Bavaria (a course especially designed for potential school drop outs at the lower secondary school – Hauptschule), patterns of transition that lead into vocational training and employment are compared with patterns that end up in exclusion from education, training and employment. Determinants of successful transitions, which can be targeted by pedagogical measures, are inter alia: participation in internships in enterprises during the last year of schooling, help and support received from parents and professional career guidance. However, besides these influential factors, regional labor market conditions are important for a successful school-to-work transition. This close link to the labor market ultimately limits the effects of educational interventions.     

Carell,Selbststeuerung und Partizipation beim computergestützten kollaborativen Lernen

Ohne Zusammenfassung     

The risk of delayed school entry in relation to migration background in different institutional settings

In Germany, children of immigrants are faced with delayed school entry about twice as often as children of native-born parents because they are more often diagnosed not being ready for school. We investigate these early educational inequalities, focusing on the interplay of individual competencies and the institutional context in terms of the school enrollment procedure. We compare the conventional procedure, where school enrollment is supposed to be bound on school readiness, with reformed procedures where school enrollment is not supposed to be bound on school readiness. Data of school entry examinations from Hesse, Germany from 2008–2012 are analyzed (N = 50,717). The results show that children of immigrants from all origin groups have a substantially higher risk of obtaining a recommendation for delayed school entry than children of native-born parents. However, these ethnic differences are strongly reduced in the reformed procedures as compared to the conventional school enrollment procedure, indicating that these procedures could be an effective measure to reduce ethnic educational inequalities at school start.     

African Universities and the African Heritage

This article deals with the role of the universities in Africa. What are the challenges for educators who want to root African education in African traditions? After a brief look at pre- colonial and colonial education the article goes on to describe the situation after independence and especially the effects on higher education of a concentration of resources on basic education. To what extent do the link arrangements built up between universities in the North and the South perpetuate a colonial situation? What can be done to restore the dignity and heritage of the African people through university training? Examples are mostly taken from Tanzania, the country in Africa the author knows best.     

Effects of learning cycle and traditional text on comprehension of science concepts by students at differing reasoning levels

Research has found the learning cycle to be effective for science instruction in hands‐on laboratories and interactive discussions. Can the learning cycle, in which examples precede the introduction of new terms, also be applied effectively to science text? A total of 123 high school students from two suburban schools were tested for reasoning ability, then randomly assigned to read either a learning cycle or traditional text passage. Immediate and delayed posttests provided concept comprehension scores that were analyzed by type of text passage and by reasoning level. Students who read the learning cycle passage earned higher scores on concept comprehension questions than those who read the traditional passage, at all reasoning levels. This result supports the hypothesis that reading comprehension and scientific inquiry involve similar information‐processing strategies and confirms the prediction that science text presented in the learning cycle format is more comprehensible for readers at all reasoning levels. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 23–37, 1999.     

Research and policy on the language of instruction issue in Africa

Since 1995 I have been engaged in consultancies and since 2001 in research dealing with the language of instruction policies in Africa. To what extent are the policies being implemented? What is the role of research and consultancy when it comes to language policy? What happens when researchers or consultants come up with recommendations which do not please donors or the people of power? My paper builds on a consultancy on the language policy of Namibia from 1995, the stock-taking exercise of ADEA/GTZ/UIL of 2006, as well as on research results and experiences gathered within the LOITASA (Language of Instruction in Tanzania and South Africa) project. In the first part of the article I give two examples where the policy recommendations by the consultants/researchers have not been followed up. I give an example of a consultancy that has had some impact on the policy formulation in some African countries. Recommendations from only one of the four studies/consultancies looked at have been thoroughly followed up. These recommendations were in line with what the donors wanted, but did not logically follow from the research done. In the second part of the article I deal with the challenge of making policy research relevant for those most greatly affected by the policy. This means working for a paradigm shift in the research and consultancy on language policies in Africa. It also means looking at the power of misconceptions held by lay people. Towards the end of the article I discuss changing a belief system which has become common knowledge. I show examples of how Tanzanian colleagues in the LOITASA project are trying to do this.