In order for out-of-school science activities that take place during school hours but outside the school context to be successful, instructors must have sufficient pedagogical content knowledge (PCK) to guarantee high-quality teaching and learning. We argue that PCK is a quality of the instructor-pupil system that is constructed in real-time interaction. When PCK is evident in real-time interaction, we define it as Expressed Pedagogical Content Knowledge (EPCK). The aim of this study is to empirically explore whether EPCK shows a systematic pattern of variation, and if so whether the pattern occurs in recurrent and temporary stable attractor states as predicted in the complex dynamic systems theory. This study concerned nine out-of-school activities in which pupils of upper primary school classes participated. A multivariate coding scheme was used to capture EPCK in real time. A principal component analysis of the time series of all the variables reduced the number of dimensions. A cluster revealed general descriptions of the dimensions across all cases. Cluster analyses of individual cases divided the time series into sequences, revealing High-, Low- and Non-EPCK states. High-EPCK attractor states emerged at particular moments during activities, rather than being present all the time. Such High-EPCK attractor states were only found in a few cases, namely those where the pupils were prepared for the visit and the instructors were trained.
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In this study, we compared the impact of audio-, video-, and text-chat interaction on target language use during online learner-learner interaction and on learner affect amongst adolescent learners of German as a foreign language. Repeated measures and ANOVA analyses revealed a high percentage of target language output in all conditions for all four tasks, especially in text- chat. Audio-chatters produced the most output and used the most meaning negotiation, compensation strategies, self-repair and other-repair strategies. Learners in all conditions gained in enjoyment, willingness to communicate and self-efficacy. Anxiety reduced for text-chatters. Task effects partly determined the quantity of L2 output, while condition effects determined meaning-oriented and form-focused processing.
MULTIFILE
Many studies have suggested that personal practical knowledge is essential for professional development. Recently, there has been growing recognition of the importance of teacher educators’ personal practical knowledge of ‘language’ for student learning development. However, the need for teacher educators to first understand their own language-oriented development in content-based classroom interaction has not received as much emphasis. The current intervention study investigates how eleven experienced teacher educators understand their language-oriented development through the control of task difficulty, small-group instruction and directed response questioning. Data were examined by conducting content and constant comparison analyses. The results showed that the intervention affected the educators’ language-oriented development, which in turn affected their awareness and decisions made to improve their methods of initiation and response during classroom interaction. The results call for more concrete ways to expend teacher educators’ practical knowledge of language to further develop and enhance their language-oriented teaching performance in content-based classroom interaction.
