Hoyeon Lee has a Master’s degree in Educational Psychology, in which she studied the development of numerical cognition in preschool children. At the same time, she has always been interested in child development, especially the process of becoming a social being. She is looking forward to exploring how children and teachers can benefit from collaboration in learning mathematics as part of C21 Research Challenge 1b, “Empowering Instructors Through Software Applications,” led by Prof. Christine Schiltz.