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[教学对象]七年级学生。[教学课时]1课时。[教学目标]1.练习临时装片的制作和显微镜的使用。2.了解植物气孔的结构及功能。3.提高学生探究性学习的能力。[教学重难点]重点:1.植物叶表皮临时装片传统方法的改进。2.探究能力的提高。难点:植物叶表皮临时装片传统方法的改进。[课前准备]多种植物叶片、指甲油、小烧杯、镊子、酒精灯、载玻片、盖玻片、显微镜。
[Teaching object] seventh grader. [Teaching hours] 1 class time. [Teaching Objectives] 1. Practice the production of temporary pieces and the use of microscopes. 2. Understand the structure and function of plant stomatal. 3 to improve students ability to explore learning. [Teaching difficult] Points: 1. Plant leaf epidermis temporary loading of traditional methods of improvement. 2. Exploring ability to improve. Difficulties: the improvement of the traditional method of temporary leaf epidermis installation. [Before class preparation] A variety of plant leaves, nail polish, small beaker, tweezers, alcohol lamp, slide, cover glass, microscope.