Teachers as Co-learners (Part 5/5: New Paradigm in Language Teaching and 21st Century Skills) Made Hery Santosa mhsantosa@undiksha.ac.id Universitas Pendidikan Ganesha Picture 1. Teachers’ Role The development and integration of technology in every field today has radically changed the education system in the 21 st century. Different types of student generations with diverse learning characteristics have been taking parts in today’s learning space. Baby boomers, Gen X, Gen Y, Gen Z, and even Gen Alpha are blending together in the era of information saturation today. The way they learn are different and the roles of the teachers become more diverse. Now, in the twenty-first-century, education depends on thinking skills, interpersonal skills, information media, technological skills as well as life skills. Memorization, didactic and rote learning have been outdated (Santosa, 2013) as the needs to meet the industry and global active participation increase (D’Souza & Mudin, 2018). To clarify, the teaching will be effective when a student can apply what they learned in a different context outside of the classroom. To respond the changing and challenging global world, the role of the teachers is essential to improve the sustainable education. Roles of teachers have shifted in the learning context today, from teacher-centered to student-centered (Gujjar & Choudhry, 2009). Teachers are not the facilitator for learning of the students only, and now they are responsible for training the students for increasing employability skills, expanding the mind, growing digital citizenships, critical thinking, and creativity as well as sustainable learning (Murati, 2015). With