在高中生物新教材“细胞膜”一节的教学中，笔者采用学导式结构教学法，从教与学两个方面驾驭教材，有效地突破了微观结构教学的难点。一、概念教学经复习设疑引导学生观察细菌细胞和高等植物细胞结构模式图，引导学生归纳真核细胞和原核细胞的概念。接着用电脑显示真核细胞亚 In the teaching of the “Cell Membrane” section of the New Senior High School Biology Textbook, the author adopted the learning-directed structure-based teaching method to control teaching materials from both teaching and learning, effectively breaking through the difficulties of microstructural teaching. First, the concept of teaching through review questions to guide students to observe bacterial cells and higher plant cell structure pattern map, guide students to sum up the concept of eukaryotic cells and prokaryotic cells. Then using a computer to display eukaryotic cells