“万事开头难”，授课亦然。新课的导入是教师把学生引入兴趣的大门，变“要我学”为“我要学”的重要一步。良好的导入像戏剧的序幕，令学生心驰神往，像巨大的磁石，使学生倍受吸引，像投石激浪，让学生启开思维的大门，点燃智慧的火炬……“一粒沙里见世界”，虽然它仅... “Everything is difficult at the beginning” and teaching is also the same. The introduction of the new class is the door for teachers to introduce students into their interests, and changing them to “I want to learn” is an important step for “I want to learn.” A good introduction like the prelude of the drama makes students fascinated and enthralled. Like a huge magnet, the students are attracted to it, like throwing rocks and waves, allowing students to open the door to thinking and light the torch of wisdom... “A grain of sand sees the world”, although It only...