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讲课重在引导，而引导之法，贵在善问。通过“问”，可以把那些学生的已有的感知和未来发展水平串联起来，让学生凭借已知去探索未知，利用已知去除疑解惑。要达到善问，需从难度、广度、跨度、坡度和时度等众“度”方面去考虑设置的问题。一、难度通过设疑、解惑，最终是要使
Lectures focus on guidance, and the guiding method is expensive. Through “questioning”, it is possible to connect the existing perceptions of these students with the level of future development so that students can explore the unknown by virtue of their knowledge and use known knowledge to dispel doubts. To reach a good question, you need to consider the setting issues from the aspects of difficulty, breadth, span, slope, and time. First, the difficulty is through doubting and dispelling doubts. The ultimate goal is to make