Is it appropriate to have online classes for younger students for too long hours? Why?
It is not appropriate for any one young or old to be engaged in long hours online learning, except there is provided intervals of breaks for Tea, Breakfast, Lunch and Dinner and for a Nap for children. And such online programme needs to be properly and topically segregated according to such breaks to avoid monotonous effect.
No, if classes gets too long the student(s) will definitely loose concentration due to boredom and being tired