Soren Rosier is a researcher and instructor at Stanford’s Graduate School of Education. Soren’s research focuses on augmenting classroom learning through building and studying technology that facilitates more meaningful interactions within communities of learners. The specific focus of his research is how children teach each other and how to train effective peer teachers. In 2017, he developed PeerTeach, a web-based application where students practice using evidence-based teaching moves and track their progress as they become increasingly adept at making strategic teaching decisions. PeerTeach is currently being used in classrooms across the Bay Area. After receiving his undergraduate degree from Harvard University, Soren taught middle school in Oakland, California, before joining the Center for Technology in Learning at SRI International. At SRI, his research focused on the development and evaluation of teacher professional development programs and blended learning applications. Through his work as a design based researcher and teacher of graduate students in Stanford’s Learning Design and Technology master’s program, Soren has developed ample insight into the hacks and challenges of developing educational technologies that have real impact on learning.