Alltagssituationen und Experimente: Was sind geeignete naturwissenschaftliche Lerngelegenheiten für Kindergartenkinder?

Natural sciences are an educational topic in kindergartens. At the same time, little is known about how to promote and facilitate the learning of natural sciences for children in kindergarten. This contribution reports on a quasi-experimental study with 245 children, which compares the learning situations ‘experiments’ with ‘discussions on the relevance of the natural sciences in daily life’. Three experimental groups, in which the learning situations were varied, where compared with a control and a baseline group. Children in the last year of kindergarten took part in three 90-minute learning settings on the topics ‘melting and freezing water’, ‘evaporation and condensation of water’ and ‘solubility and insolubility in water’. Learning gains were measured using a pre-post-design with a Rasch-scaling. Cognitive performance and family background were controlled for. A significant benefit in comparison to the control and baseline groups could only be found for a combination of both learning situations.     

Assessors’ perceptions of their judgement processes: Successful strategies and threats underlying valid assessment of student teachers

As current procedures for teacher assessment are often based on non-standardized, qualitative information derived from multiple sources, the overall validity of the assessment depends heavily on the judgement processes of the assessors. Because it is of great importance for assessors to be aware of their own judgement processes and of the possible threats to validity in these processes, investigating assessors’ perceptions is of vital significance. In the present study, the perceptions of 22 assessors who judged a student teacher pair-wise using a specific assessment procedure were explored using semi-structured interviews. A qualitative analysis of the individual assessors’ perceptions with regard to the essential judgement processes of consideration of evidence and combination of evidence to attain an overall judgement resulted in an overview of successful strategies and threats underlying a valid assessment process. General implications for ensuring the validity of the assessment process and the preparation of assessors are discussed.     

Writing proficiency level and writing development of low-achieving adolescents: the roles of linguistic knowledge,fluency, and metacognitive knowledge

In a longitudinal design, 51 low-achieving adolescents’ development in writing proficiency from Grades 7 to 9 was measured. There were 25 native-Dutch and 26 language-minority students. In addition, the roles of (1) linguistic knowledge, (2) metacognitive knowledge, and (3) linguistic fluency in predicting both the level and development of writing proficiency were assessed. Low-achieving students improved in writing proficiency, the language-minority students more so than the native-Dutch students. Regarding the level of writing proficiency, individual differences between low achieving adolescents could be accounted for by receptive vocabulary, grammatical knowledge, and speed of sentence verification, suggesting that these are important components in low-achieving adolescents’ writing. Regarding development in writing proficiency, grammatical knowledge predicted variation between low-achieving students. Explanations and educational implications of these findings are discussed.     

Examining Science Teachers’ Argumentation in a Teacher Workshop on Earthquake Engineering

The purpose of this study was to examine changes in the quality of science teachers’ argumentation as a result of their engagement in a teacher workshop on earthquake engineering emphasizing distributed learning approaches, which included concept mapping, collaborative game playing, and group lesson planning. The participants were ten high school science teachers from US high schools who elected to attend the workshop. To begin and end the teacher workshop, teachers in small groups engaged in concept mapping exercises with other teachers. Researchers audio-recorded individual teachers’ argumentative statements about the inclusion of earthquake engineering concepts in their concept maps, which were then analyzed to reveal the quality of teachers’ argumentation. Toulmin’s argumentation model formed the framework for designing a classification schema to analyze the quality of participants’ argumentative statements. While the analysis of differences in pre- and post-workshop concept mapping exercises revealed that the number of argumentative statements did not change significantly, the quality of participants’ argumentation did increase significantly. As these differences occurred concurrently with distributed learning approaches used throughout the workshop, these results provide evidence to support distributed learning approaches in professional development workshop activities to increase the quality of science teachers’ argumentation. Additionally, these results support the use of concept mapping as a cognitive scaffold to organize participants’ knowledge, facilitate the presentation of argumentation, and as a research tool for providing evidence of teachers’ argumentation skills.     

Changes in science teachers' conceptions and connections of STEM concepts and earthquake engineering

ABSTRACT

The authors find justification for integrating science, technology, engineering, and mathematics (STEM) in the complex problems that today's students will face as tomorrow's STEM professionals. Teachers with individual subject-area specialties in the STEM content areas have limited experience in integrating STEM. In this study, the authors investigated the conceptual changes of secondary school teachers teaching domain-specific STEM courses after a week-long professional development experience integrating earthquake engineering and domain-specific concepts. They documented and then triangulated outcomes of the experience using participating teachers' concept maps and teacher-generated written materials, respectively. Statistical comparisons of participants' concept maps revealed significant increases in their overall understanding of earthquake engineering and more accurate linkages with and among science domain-specific concepts. Content analyses of teachers' learning products confirmed the concept map analysis and also provided evidence of transfer of workshop learning experiences into teacher-designed curriculum products accurately linking earthquake engineering and domain-specific STEM content knowledge.     

A Comparison of Self-Adapted and Computerized Adaptive Tests

According to item response theory (IRT), examinee ability estimation is independent of the particular set of test items administered from a calibrated pool. Although the most popular application of this feature of IRT is computerized adaptive (CA) testing, a recently proposed alternative is self-adapted (SA) testing, in which examinees choose the difficulty level of each of their test items. This study compared examinee performance under SA and CA tests, finding that examinees taking the SA test (a) obtained significantly higher ability scores and (b) reported significantly lower posttest state anxiety. The results of this study suggest that SA testing is a desirable format for computer-based testing.     

Examination of Designed Materials in Digital Environment on Concept Teaching in Special Education

ABSTRACT

The aim of this study is to investigate the effectiveness of digital materials designed for the use of teachers and students in teaching concept skills to students in need of special education. The concept of the long term was included in the study. As a research model, a single-subject research model and a multiple-probe model were used. The participants of the study consisted of 4 students from different disability groups with the appropriate sampling method. In the study, data forms prepared by the researcher were used as data collection tools. According to the data obtained from the data forms, it was observed that 4 students who participated in the study learned the concept in different time intervals by using digital materials. In general terms, it was observed that all of the students learned the long concept, which is the concept to be taught. By using digital materials, it is concluded that students who are in need of special education support students’ individual learning skills independently of time and place and this was supported by teachers’ opinions.