生物学教师要想上好一堂课，不仅要钻研教学大纲和深入细致地分析教材，还要搞好课堂板书的设计、处理和安排。课堂板书，既是一种教学手段，又是一门教学艺术。它是有形有色的教学语言、教学图画。它具有直观性、形象性、启发性，可以把讲授的内容系统化、简明化。为了发挥它 Biology teachers must not only study the syllabus and analyze the textbooks in detail, but also do a good job of designing, processing, and arranging the classroom script. Classroom board writing is both a teaching method and a teaching art. It is a tangible teaching language and teaching drawing. It is intuitive, visual, and inspiring, and can be systematic and concise. In order to play it