练习是掌握知识、巩固知识、运用知识、形成技能的重要手段,是教师了解教学效果、发现问题、弥补缺陷的基本方法,是教学中主要环节之一。因此,在设计、指导练习时,应注意以下十个方面。一、注重练习的内容练习的内容要有针对性,要根据教材的重难点和学生容易混淆的内容设计练习题。在教学“数的整除”时,要针对本内 Practice is an important means to master knowledge, consolidate knowledge, use knowledge and form skills. It is one of the main links in teaching to understand the teaching effect, discover problems and make up for defects. Therefore, in the design, guidance practice, should pay attention to the following ten aspects. First, pay attention to the contents of practice Exercises should be targeted, according to the teaching material of the heavy and difficult to confuse students with the contents of the design exercises. In teaching “number of divisions ”, we must target this