笔者在对苏科版数学七年级下册《一元一次不等式组的应用》进行教学时,考虑到教学大纲对本节内容进行了删减,但后面的习题中依然出现这类题目,因此本节内容还必须得适当选讲.由于要求降低,笔者不愿再选取一些很复杂的题目故意“刁难”学生,而是在书后的习题中选择几道具有代表性的题目,通过学生独立完成、尝试出错,笔者点拔、规范解题,最后合作探究、提炼升华,最终实现本节的教学目标。 The author of the Su Ke version of the seventh grade of mathematics, “a group of inequality applications” teaching, taking into account the syllabus of the content of this section has been deleted, but the problems still appear in the following exercises, the contents of this section But also must be properly selected due to lower requirements, the author is reluctant to select some very complicated topic deliberately “difficult things” students, but in the exercises after the book to select a few representative topics through the students to complete independently, Attempting to make mistakes, the author points and standardize the problem-solving, the last to explore cooperation, refining sublimation, and ultimately achieve the teaching objectives of this section.