练习是一种有目的、有步骤、有指导的活动,是学生心智技能和动作技能形成的基本途径。因此,优化练习设计是提高课堂效率的重要环节。“练习”这一教学环节可以设置在新授课过程之中,成为及时练习,也可以单独放置在最后成为专项练习,但是不管顺序的前后,练习的设计是关键。好的练习设计可以巩固新知,提高学生的学习兴趣,培 Practice is a purposeful, step-by-step, guided activity that is the basic way for students to develop mental skills and motor skills. Therefore, optimizing practice design is an important part of improving classroom efficiency. “Practice ” This teaching link can be set in the new teaching process, as a timely manner to practice, can also be placed separately in the final into a special exercise, but regardless of order before and after the practice of the design is the key. Good practice design can consolidate new knowledge, improve students’ interest in learning, training