Aufgaben im COACTIV-Projekt: Zeugnisse des kognitiven Aktivierungspotentials im deutschen Mathematikunterricht

In the context of the DFG-funded project "Professional Knowledge of Teachers, Cognitively Activating Instruction, and the Development of Students' Mathematical Competence" (COACTIV), the mathematics teachers whose classes participated in the 2003/2004 longitudinal component of the PISA assessment in Germany were surveyed and tested. To provide insights into the quality of the tasks implemented in German mathematics classrooms toward the end of secondary level I, the teachers were also asked to submit the examinations, tests, and homework assignments they had set for their 9th and 10th grade classes in the 2003/2004 school year. All tasks (approx. 45,000) were then coded according to a classification scheme developed specifically for COACTIV. The objective was to investigate the potential of these tasks to provide learning opportunities in the mathematics classroom. This article presents the major categories of the classification scheme and reports selected findings. © 2008 GDM - Gesellschaft für Didaktik der Mathematik.