数学课堂教学是一个整体,新课导入是教学的第一环节。它能帮助学生明确本节课所要学习的主要问题,激发学生的学习兴趣和求知欲,提高课堂效率。生动形象、立意巧妙的引入设计能拨动学生的心弦,立疑激趣,促使学生的学习情绪高涨,自觉主动地步入智力振奋状态,充分调动探求新知的积极性和自觉性。例如:在“等差数列”第一课时的教学中,我这样 Mathematics classroom teaching is a whole, the new course is the first part of teaching. It can help students to identify the main issues to be learned in this lesson, to stimulate students' interest in learning and curiosity, and to improve classroom efficiency. Vivid image, intentionally ingenious introduction of design can stifle the hearts of students, doubts suspicious interest, prompting students to learn emotions, consciously and actively into the state of mind uplift, fully mobilize the enthusiasm and consciousness to explore new knowledge. For example: in the teaching of “the arithmetic progression” in the first lesson, I do