新课程标准特别强调课堂教学的有效性。实践也证明:科学有效的导入能让学生产生强烈的求知欲和好奇心,帮助学生营造浓厚的学习氛围,充分调动学生上课的积极性,并且让学生迅速进入良好的学习状态,进而为教师和学生教、学新课奠定良好的基础。 The new curriculum standard emphasizes the effectiveness of classroom teaching. Practice also proves that the scientific and effective introduction enables students to have a strong curiosity and curiosity to help students create a strong learning atmosphere, and fully mobilize the enthusiasm of students in class, and allow students to quickly enter a good learning state, and thus for teachers and students Teaching, learning new course to lay a good foundation.