Development of sustainability-oriented international class to increase environmental awarenessMochamad Nursalim, Wulan Patria Saroinsong, Ima Widiyanah, Ricky Setiawan, Sherrin Nurlita Widya, Chinun Boonroungrut and Brwa Aziz SidiqE3S Web Conf., 568 (2024) 04034DOI: https://doi.org/10.1051/e3sconf/202456804034