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A class or course conducted over the internet, typically using video conferencing or specialized educational platforms.
由于疫情，学校决定将所有课程改为上网课。
Due to the pandemic, the school decided to switch all classes to online courses.
This term became widely used during the COVID-19 pandemic as remote learning became more common.
The tone of '上' is the fourth tone (shàng), and '网' is the third tone (wǎng).
This term is commonly used to describe any educational activity conducted online, not just formal classes.
Combination of 上网 (to go online) and 课 (class/course).
This term is commonly used in both formal and informal contexts, especially in educational and technological discussions.