This article is a methodological contribution to the use of design experiments in educational research. We will discuss the implications of a historical and situated interpretation to design experiments, the consequences this has for the analysis of the collected data and empirically based suggestions to improve the designs of the computer-based…

A series of computer programs designed to provide a dynamic simulator of Joyce and Weil's models of interactive teaching are described. Initially developed and tested at the City University of New York (CUNY), the system is capable of supporting retrospective and predictive analysis of selected kinds and patterns of verbal behavior in a variety of…

Validity is a central issue in use of self-report data for the investigation of teacher thinking. "Triangulation," or use of several data sets to test, corroborate and elaborate each other, is one method for increasing validity of findings. This paper illustrates a process of triangulation of data obtained by three different data…

The paper discusses high school students' attitudes towards teachers' verbal questioning behavior and assesses the relevance of students' preferences to test score gains. Data were sought for several questions. What cognitive levels of teacher verbal questioning behavior do social studies students prefer? What is the relationship between students'…

The study evaluates the effectiveness of a set of social studies activities in promoting cooperative interaction among junior high school students. A field experiment was designed to test three hypotheses: (1) groups which have previously worked together structure tasks more cooperatively than a newly formed group: (2) groups which have…