In this paper I summarize my 25 years of research on teaching and learning statistics, as I participated in the emergence of statistics education as a research discipline. This summary and reflection are presented through stories of research projects I have been involved in, all of which involved collaborations with colleagues who have made important contributions to the research and from whom I have learned many important lessons. I summarize and reflect on three interconnected areas of research: synthesizing and building on research studies across diverse disciplines, developing and using good assessment instruments to evaluate and improve student learning, and studying the role of technological tools in developing students' reasoning about specific concepts.
The CAUSE Research Group is supported in part by a member initiative grant from the American Statistical Association’s Section on Statistics and Data Science Education