Thinking in Objects and their Collaboration: Introducing Object-Oriented Technology

Although many professionals in education believe that an ‘objects first’ approach is the best method of introducing object-oriented technology, there is no common agreement on how to start such courses. Current study programs often begin by teaching a chosen object-oriented programing language, where students are confronted by a large amount of syntactical detail. Instead of focusing on the basics of object-oriented technology, namely objects and their collaborations, difficulties in handling the details of the programing language lead to a very scattered knowledge of object-oriented concepts. This is dangerous, as learners are left with a set of unconnected knowledge fragments. Approaches which embed different knowledge fragments in an overall knowledge view are known as “cognitive apprenticeship” approaches. The main idea of cognitive apprenticeship is continuous practice. We present a learning environment for introducing object-oriented technology in upper secondary schools based on cognitive apprenticeship. We use a visual programing language to away from the details and provide tool support to aid practice. We present the learning sequencewhich is used and show the impacts it makes on the course structure in our experiment in the chosen object-oriented programming language The Joint Task Force on Computing Curricula IEEE Computer Society.     

The relationship between Marcia's ego identity statuses and selected personality variables in an African context

Marcia's operationalization of Erikson's identity construct, the four identity statuses, was used in a study on late adolescent males in an African cultural context. Identity statuses were determined for 110 first-year university students in relation to global identity, as well as occupation, religion and politics, the content areas of Marcia's original Identity Status Interview. Personality dimensions were measured by the High School Personality Questionnaire and the IPAT Anxiety Scale. Contrary to findings obtained in Western settings, adolescents in the foreclosure status (global identity) displayed lower intelligence and concrete thinking patterns. Identity statuses relating to the individual content areas were both supportive and in conflict with findings obtained in Western studies, indicating possibly qualitative differences in an African situation.     

Effectiveness of the Additional Early Mathematics program for teaching children early mathematics

This paper presents the results of a study of the development of early mathematical competence among young poor arithmetic achievers in the 4–7 year age group. Research has shown that arithmetic difficulties later in life can be explained by an insufficient development of early mathematical competence: i.e. different aspects of early mathematical competence. The different aspects of early mathematical competence are derived from cognitive psychology and from a didactical point of view with an emphasis on (the various phases of) counting. The Piagetian operations (seriation, correspondence and classification) are used, however, as much as possible embedded in a counting context.After selection by way of an early mathematical competence test, children with a score below a criterium are presented with an additional program. This program consists of activities, embedded in real (daily) life themes, in which attention is paid to the different aspects of early mathematical competence. The program is given to the children with a guiding or a structuring instruction form. The results of the study show that it is possible to stimulate the development of early mathematical competence among young poor arithmetic achievers. The way in which instruction is offered has no influence on achievement.     

Die Vereinbarkeit von Willensfreiheit und Erziehung

It is claimed, in this paper, that free will and education are compatible. The problem of compatibility arises because education is usually seen as a way of guiding, controlling or determining someone else’s behavior. But how is the educational control of a person who is endowed with a free will possible? This question is discussed with reference to the philosophical debate on the compatibility of free will and determinism. This debate provides various concepts of freedom can enrich the pedagogical discussion of the issue. For instance, freedom might be equated with being the causal source of a person’s actions. Alternatively, we could describe freedom as the capability of a person to act otherwise than he or she actually acts. This paper argues that a third concept of freedom can help to solve the problem of the compatibility of free will and education. According to this concept, the capability to act on reason must be seen as constitutive for freedom.     

Multidimensional IRT models for the assessment of competencies

Multidimensional item response theory (MIRT) provides an ideal foundation for modeling performance in complex domains, taking into account multiple basic abilities simultaneously, and representing different mixtures of the abilities required for different test items. This article provides a brief overview of different MIRT models, and the substantive implications of their differences for educational assessment. To illustrate the flexibility and benefits of MIRT, three application scenarios are described: to account for unintended multidimensionality when measuring a unidimensional construct, to model latent covariance structures between ability dimensions, and to model interactions of multiple abilities required for solving specific test items. All of these scenarios are illustrated by empirical examples. Finally, the implications of using MIRT models on educational processes are discussed.     

Measuring Chinese teacher professional competence: adapting and validating a German framework in China

ABSTRACT

The study presented in the paper has the following goals. The first is to review and compare teacher competence frameworks developed in Eastern (Chinese) and Western (German) contexts, exemplified for the domain of mathematics. Major similarities of the two contexts could be reconstructed in the conceptualization of teacher competence as a multidimensional construct comprising knowledge, teaching-related skills and beliefs. Distinct differences could be identified as well, with the Chinese frameworks including a wider range of teacher-competence facets and emphasizing more teaching-related competencies than the Western (German) frameworks. The second purpose is to adapt and validate a German framework of the measurement of mathematics teacher competence in a Chinese context. This adaptation and validation uses exemplarily mathematics teacher, in detail follow-up-studies of the international Teacher Education and Development Study: Learning to Teach Mathematics (TEDS-M). With the integration of a qualitative approach (e.g. elemental validity) and a quantitative approach (e.g. construct validity) to validate the framework, the results of both approaches suggest a satisfactory validity for the adaptation. Overall, the results point out that the examined teacher competence framework and its instruments can be used for comparative analyses in Germany and China.