The teacher can keep things fresh through variation, by changing the speed, combining reading and singing, or perhaps even letting the children take turns leading the class or read Tang poems in Taiwanese (which is closer in pronunciation to classical Chinese anyway).
老師可以在領讀時變變花樣，避免枯燥，譬如變換速度，或吟或唱，或是以閩南語讀唐詩，或讓小孩輪流帶讀。