现行初中数学中出现的“路程问题”“工程问题”“浓度问题”等等，是具有应用价值的实际问题，应该使学生掌握好它们的基本解法。由于这些传统问题的解决有一定模式，不能简单归纳成题型，让学生模仿去“对号入座”，能不能遵循教学大纲精神，努力挖掘现行教材中知识的应用价 The “distance problem”, “engineering problem”, “concentration problem”, etc. that appear in current junior middle school mathematics are practical problems that have practical value and should enable students to master their basic solutions. Since these traditional problems are solved in a certain mode, they cannot be simply summed up into question types, allowing students to imitate and “sit back”, can they follow the spirit of the syllabus, and try to find out the application price of knowledge in current textbooks.