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Three prerequisites of online classes

1. Smart phone
2. Tripod
3. Notebook

The first two items allow your camera to be set at the appropriate height, distance and angle for the teacher/instructor to have an optimal view to provide feedback to the student. These items can be replaced with other equipment that can provide equivalent adjustment of the camera.  The 3rd item facilitates note taking (don't forget to post your notes too at the website).
Source: https://practicalmethod.com/?p=67089