A good reason not to be upset if students don’t look directly at you during a lesson or conversation.
If you need to have an important conversation with someone like a friend or co-worker, your discussion could be deeper if you go for a walk together rather than sit face to face. And the reason for this isn’t connected to physical exercise. It’s about eye-contact and thinking.
If someone doesn’t look at us during a conversation, we may think that they are not interested in what we are saying, or that they are feeling embarrassed, or they are hiding something or lying. If students are not looking directly at a teacher, the teacher might think that they are not paying attention. Actually, there could be a completely different reason why someone is not making eye-contact.