《航天飞机》是一篇说明文。说明文,一要理解文本内容,二要学习说明事物的方法。这篇课文语言浅显,学生一读就懂。教学应着重引导学生理解和运用列数字和作比较这两种说明方法。我们研读后发现,课文在运用这两种说明方法介绍航天飞机“飞得更高更快”和“本领大”这些特点时,均采用了“总分”写法。而用“总分”方式构段,是中年级以“段”为主进行读写训练的重点。于是,我们就把学用两种说明方法和“总分”写法确定为本课教学的重点目标。另外,本文跟一般说明文不同的 “Space Shuttle” is an explanation. Explain the text, one to understand the text, and second, to learn things that way. This text is a simple language, students understand it on first reading. Teaching should focus on guiding students to understand and use column numbers and compare these two methods of instruction. After studying, we found that the text used the “total score” when applying the two explanations to describe the features of the space shuttle “higher and faster” and “strong”. The use of “total score ” way of construction, is middle-aged to “Duan ” based reading and writing training focus. Thus, we put the learning with two explanatory methods and “total score ” writing method to determine the focus of the teaching objectives. In addition, this article is different from the general description