Recently, Classrooms around us are getting more digitalized due to COVID-19. Whether teachers like the trend or not, all teachers had to deal with online or blended teaching regardless of their expertise or skills on technology in classes. Every educator has their own way of teaching using their offline materials before COVID-19 but they also need to be accustomed to online and blended learning. Whenever I have google-related training for fellow educators, they always ask me like this. I came to know and like the way of online-based teaching but I am confused how much I use this without ignoring the traditional ways of teaching for the reason of inconvenience and outdated. How can I use both of them wisely? and I saw some students who had talents at expressing something with a pen or pencil but were poor at it with a digital device. What should I do when doing activities without any misunderstanding or misjudgement? At this point, I am stuck with possible challenges in in-person classroom settings. 1) How much can or should teachers use online materials (based on computers and other devices) and traditional ones (based on paper and stationery) at the same time in classes? 2) If the ratio could be different case by case (schools, students and atmosphere), how can we help educators who are struggling between online and traditional ways of teaching? 3) When students who have knowledge about something but have difficulty in expressing it in a digital way, how can educators help them? In this sense, it will be a great opportunity for me to think over those three issues for myself and educators around me. I hope I can broaden my horizons on these with innovators through VIA21.