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有关染色体和染色质的内容在高中生物新课程中多次出现,最先出现在人教版教材必修1·第3章·第3节“细胞核——系统的控制中心”上,其中描述了染色体和染色质的关系,即染色质和染色体是同样的物质在细胞不同时期的两种状态。在课堂教学时,虽然教师用打比方、画简图等方法讲述两者的形态,但学生只能获得模糊的概念。为了帮助学生理解这一抽象的知识点,笔者在教学中自制了染色体和染色质简易教具,收到了较好的教学效果。
Chromosomes and chromatin content appears many times in the new curriculum of high school biology, first appeared in the PEP textbook compulsory 1 · Chapter 3 · Section 3 “nucleus - the control center of the system ”, which describes The relationship between chromosomes and chromatin, that is, chromatin and chromosomes are two states of the same substance at different stages of the cell. While teaching in the classroom, although teachers use such methods as analogy and drawing sketch to describe the two forms, the students can only get vague concepts. In order to help students understand this abstract point of knowledge, the author in the teaching of self-made chromosomes and chromatin simple teaching aids, received a good teaching effect.