Ein Testverfahren für optimierende Codegeneratoren

Die im Rahmen der Modell-basierten Entwicklung eingebetteter Steuerungs- und Regelungssoftware eingesetzten optimierenden Codegeneratoren müssen einer intensiven Qualit?tssicherung unterzogen werden. Dem Einsatz von Testsuiten kommt dabei eine zentrale Rolle zu. Der Beitrag beschreibt den Aufbau einer modularen Testsuite für Codegeneratoren und schl?gt einen Testansatz vor, der eine systematische Prüfung der vom Codegenerator angewendeten Optimierungstechniken erm?glicht.     

Effective measures to foster girls’ interest in secondary computer science education

The interest of girls in computing drops early during primary and secondary education, with minimal recovery in later education stages. In combination with the growing shortage of qualified computer science personnel, this is becoming a major issue, and also a target of numerous studies that examine measures, interventions, and strategies to boost girls’ commitment to computing. Yet, the results of existing studies are difficult to navigate, and hence are being very rarely employed in classrooms. In this paper, we summarize the existing body of knowledge on the effective interventions to recruit and retain girls in computer science education, intending to equip educators with a comprehensive and easy-to-navigate map of interventions recommended in the existing literature. To this end, we perform an aggregated umbrella literature review of 11 existing reviews on the topic, together accumulating joined knowledge from over 800 publications, and formulate the findings in a map of 22 concrete interventions structured in six groups according to their phase and purpose.

     

One country,two cultures – a multi-perspective view on Israeli chemistry teachers’ beliefs about teaching and learning

This paper presents a study focusing on differences in Israeli Jewish and Arab chemistry teachers’ beliefs regarding teaching and learning of chemistry in the upper secondary schools. Israel is a country experiencing the problems of diverse cultural orientation of its inhabitants but applying the same educational system to its diverse cultural sectors. Education includes the same curriculum in chemistry for both the Israeli Jewish and Arab cultural sectors as well as final examinations (matriculation) set centrally by the Ministry of Education. Thus, this study can serve as a striking case for other countries facing similar cultural diversity. The study is based on two different instruments that are both qualitative and quantitative in nature. The qualitative data stem from chemistry teachers’ drawings of themselves as teachers in a typical classroom situation accompanied by four open questions. The data analysis follows three qualitative scales: beliefs about classroom organization, beliefs about teaching objectives and epistemological beliefs. A quantitative study gives insights into teachers’ beliefs about what characterizes good education. The main goal of the present paper is to determine whether both groups of chemistry teachers with different sociocultural background in Israel hold different views about education in general and chemistry education in particular. The findings provide evidence that in Israeli chemistry classrooms, the beliefs of Arabic teachers differ from those of the Jewish teachers, although both groups live in the same country and operate the same educational system.     

German Teachers’ Views on Promoting Scientific Media Literacy Using Advertising in the Science Classroom

A large part of the media landscape surrounding us consists of advertising. Therefore, skills for critically coping with advertising are indispensable. Students need to develop such skills for evaluating messages and facts from advertisements. They also need to learn about the mechanisms behind how advertisements are created and used to influence the public. Today, advertising for many products has a strong scientific component. However, learning with and about advertising does not play a prominent role in school science education. To date, advertising is almost exclusively discussed and evaluated within the humanities and social sciences, especially language education. The scientific components of advertising are not taken into account in these subjects. Engaged science teachers might prove to be the key to innovation when it comes to media education in the science classroom. This study explores both the opinions of German science teachers on the importance of scientific media literacy and their attitudes to implementing teaching units covering advertising in their science classes. Semistructured interviews with 12 secondary science teachers were conducted and analyzed using qualitative content analysis. Two main types of teachers were identified, who have completely different views towards learning with and about advertising in science education.     

Academic capabilities in developing countries—A conceptual framework with empirical illustrations from Thailand

The role of universities in the technological upgrading of developing countries is attracting more and more interest from both the academic community and policy makers. This paper is proposing a new framework to understand this role by introducing the concept of academic capabilities. Its application is illustrated based on the case of Thailand. It is shown that the concept of academic capabilities allows interpreting higher education data and information in an innovative way. It can be applied to relate the multiple facets of universities (e.g. research, teaching, technology transfer, management) to the overall process of technological change and development.     

DIFFERENT TYPES OF ACTION RESEARCH TO PROMOTE CHEMISTRY TEACHERS’ PROFESSIONAL DEVELOPMENT—A JOINED THEORETICAL REFLECTION ON TWO CASES FROM ISRAEL AND GERMANY

Action research is defined as using research activities to develop concrete societal practices. Action research understands the change of practice as being already a central aim of the research process itself, and it also seeks to contribute to the professional development of all participants in the particular field of study. Even though (or maybe even because) action research has a long history in the literature, there is a wide variety of interpretations of it. These range all the way from research supportive, via interactive, to emancipatory approaches. There is also a broad range of objectives covering both improving professional environments and generating results of general interest. This paper explores the spectrum of justifications given for action research with a specific focus on science education. Two completely different examples of action research selected from Israel and Germany help illustrate the diversity of the topic. The Israeli case focuses primarily on the professional development of a group of teachers; the German example hones in on the development of suitable curricula and lesson plans for wide dissemination. Comparison of these two projects is embedded in a theoretical framework which categorizes the different action research modes and contemplates teachers?? professional development. The aim of this paper is to reflect upon the common potential inherent in differing forms of action research on science education, including the aspect of professional development among teachers.     

A case study of beginning science teachers’ subject matter (SMK) and pedagogical content knowledge (PCK) of teaching chemical reaction in Turkey

This paper describes a case study focusing on the subject matter knowledge, pedagogical content knowledge, and beliefs about science teaching of student teachers in Turkey at the start of their university education. The topic of interest was that of teaching chemical reactions in secondary chemistry education. A written test was developed which used the research literature on potential student misconceptions with regard to different aspects of chemical reactions. Thirty beginning science student teachers were tested, with an additional eight interviews from the student teachers in the same sample. The interviews focused on student teachers’ views about how to best teach chemical reactions in lower secondary chemistry classes. The results revealed deficits in the subject matter knowledge of the student teachers. It also became obvious that the teachers in this sample held very traditional and teacher-centred beliefs when it came to chemistry teaching at the secondary level. Their teaching attitudes were geared mainly towards the acquisition of facts by pupils, and often ignored the development of process-oriented skills. Implications for science teacher education are discussed.