随着教材的改进,探究生物实验所占的比例越来越重。但由于课时等的限制,很多教师并不十分重视实验教学,需要通过提高教师的认识,改进生物实验课现状。同时,广泛取材,从实验材料、方法上对实验进行改进与创新。一、“制作洋葱鳞片叶内表皮细胞临时装片”的实验改进技巧学生制作洋葱细胞临时装片的实验用的实验材料是洋葱鳞片叶内表皮,在制作装片时很容易产生气泡,染色时也不易着色。教材要求学生染色时, With the improvement of teaching materials, the proportion of inquiry biology experiments has become more and more important. However, due to the limitations of class hours, many teachers do not pay much attention to experimental teaching. They need to improve their understanding and improve the current state of the biology experiment class. At the same time, we have made extensive use of experimental materials and methods to improve and innovate experiments. First, “Immediately install the film on the scales of onion scaly leaf epidermal cells ” experimental improvement techniques The experimental material for students to make onion cells for temporary loading experiments is onion scales leaf inner epidermis, it is easy to produce bubbles when making the loading, Also difficult to stain when dyeing. When the textbook requires students to dye,