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《昆虫》一课的教学,学生很难把“昆虫”和“虫子”两个概念区分开来而形成抽象的“昆虫”概念。他们只知道蚂蚁、蜻蜓等是昆虫,却不知道昆虫是什么?为解决这一问题,在教学时,教师应做好以下几项工作。 1.引导学生分组观察蚂蚁,学会观察事物的方法。在观察过程中,教师应提示学生:先注意蚂蚁的身体可以分为哪几个部分,然后依次看看蚂蚁的头部、胸部、腹部各有些什么。使学生逐步学会先整体(身体)后局部(头、胸、腹)和按顺序(头→腹)观察的方法。之所以这样作,是因为学生观察事物时,往往缺乏明确的目的,总是这里看一下,那里看一下,很难抓住事
In the teaching of “Insects”, students can hardly distinguish the two concepts of “insects” and “insects” to form the abstract “insects” concept. They only know that ants, dragonflies and other insects, but do not know what insects? To solve this problem, teaching, teachers should do the following work. 1. Guide students to observe ants in groups, learn to observe things. In the process of observation, teachers should prompt students: first pay attention to which part of the body can be divided into ants, and then turn to see the ant's head, chest, abdomen, and what each. Enable students to gradually learn the first overall (body) after the local (head, chest, abdomen) and in order (head → abdomen) method of observation. The reason for this is because when students observe things, they often lack a clear purpose. They always look here, look there and find it hard to grasp things