When parents find that the teacher is unwell, they can take the initiative to contact the school to understand the specific situation of the teacher and express their concern. You can ask the teacher if he needs a rest, or if he needs help, such as a substitute. At the same time, parents can also provide some warm care, such as sending a fruit or writing a condolence letter to express their concern and blessing to the teacher. Such care can not only make teachers feel warm and supportive, but also promote home-school cooperation and contribute to children's education.