-Because the kids have a low. Management of teaching must therefore take more than usual. Use the method repeatedly until recall. -Classroom style narrow, thus affecting the table in various forms is quite difficult, including the children's mischievous, so if the table in each of the lessons, it will take a long time, which affects the time learn less.-Because the school has children with disabilities a lot. Read the books. Learning, therefore, is quite difficult. Teaching methods must be used repeatedly, and describes several cycles, which can be a time-consuming.
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