练习课是学生在教师的指导下,以独立练习为主的一种课型。在小学数学教学中,讲授了一个新知识后,往往紧跟着要上一、两节练习课,其任务是使学生巩固所学的知识,形成技能技巧,培养能力,发展智力。要提高练习课的教学效果,需要我们用辩证的观点对练习课中各种矛盾和关系仔细地分析、正确地处理、妥善地解决。一、量与质的关系练习要有一定的量,没有量就没有质,但不能片面追求练习的数量,特别要避免单调、机械的重复练习。以免降低学生练习的兴趣。要在“精练”、“巧练”上动脑筋、下功夫,以“质”取胜。如针对学生对“化简比”和“求比值”混淆不清的现象,可设计如下的选择题: The practice lesson is a kind of lesson that the student mainly practices independently under the guidance of the teacher. In primary school mathematics teaching, teaching a new knowledge, often followed by one or two practice classes, the task is to enable students to consolidate the knowledge learned, the formation of skills, training, development of intelligence. To improve the teaching effect of practice class, we need to use the dialectical point of view to carefully analyze the contradictions and relations in the practice class, properly handle and properly solve the problems. First, the relationship between quantity and quality There must be a certain amount of practice, there is no quality no quality, but not one-sided pursuit of the number of exercises, in particular, to avoid monotonous, repetitive mechanical exercises. Lest reduce the interest of students to practice. In the “refined” and “skillful” on their brains, work hard, “quality” to win. For example, students can confuse “Simplicity Ratio” and “Odds Ratio” to design the following multiple-choice questions: