本单元四篇课文:《地球是圆的吗》、《看云识天气》、《苏州园林》、《核舟记》。本单元是本册书的第三个纯说明文单元。学生们对说明文的结构、说明的顺序、说明的方法、说明文的语言特点都有了一个初步的了解和认识。教学本单元时,教师可从单元教学重点出发,对整个单元宏观掌握,引导学生对四篇课文进行联篇比较阅读,找出它们在说明文文体特征几个方面的异同点,从而巩固所学的说明文的有关知识。 The four texts in this unit: “Is the Earth Round,” “Look at the Cloud, Know the Weather,” “Suzhou Garden,” and “The Nuclear Boat.” This unit is the third purely explanatory unit of this booklet. The students have a preliminary understanding and understanding of the structure of the exposition, the sequence of the explanation, the method of explanation, and the language features of the expository text. When teaching this module, teachers can start from the focus of unit teaching, master the whole unit macroscopically, and guide students to read and compare the four texts together to find out their similarities and differences in explaining the stylistic features of the text in order to consolidate what they learned. Explain the relevant knowledge.