This paper introduces a software usage tracing mechanism and analysis of user log files for a large scale educational research project. The research data is collected online from 50 teachers. The data is parsed and stored in a MySQL database using scripting technologies. In this presentation, a logging process appropriate for educational software usage and the analysis of user traces in educational settings are described by frequency analysis techniques. This novel format of obtaining electronic user traces provides more valuable information about teachers' educational technology use compared to standard logging structures. Data analysis shows that teachers' implementation level and student participation in classroom activities differ with the time of the year, course content, choice and amount of different components and arrangement of instructional strategies in the classroom. Overall student participation in classroom activities is high. It is concluded that the technology use enables teachers to improve their understanding of student learning.