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https://hs-jeong.net/2019/07/17/julian-sefton-greens-keynote-speech-on-crossing-boundaries-between-home-and-school-teachers-and-the-challenge-of-digital-connectivity-2018-12-seoul-national-university/
Julian Sefton-Green's keynote speech on 'Crossing boundaries between home and school: teachers and the challenge of digital connectivity' (2018.12. Seoul National University)