She is currently working on various projects that attempt to incorporate social and contextual adaptation into learning technologies, including implementing a teachable robot for mathematics learning and re-imagining the design of the digital textbook. Prior to January 2013, Walker was a Computing Innovations Postdoctoral Fellow at Arizona State University. She completed her Ph.D. in 2010 at Carnegie Mellon University in Human-Computer Interaction and her B.Sc. (Honors) from the University of Manitoba in 2004. Walker's work has resulted in ten journal articles and twenty peer-reviewed, full conference papers, earning her a best young researcher's track paper award at AIED and best paper nominations at ITS, CSCL, and AIED.