小学学生的自主学习能力很差,知识的学习主要是通过老师的教授和有效地引导。从而如何让学生能有效的掌握他应掌握的知识是每个老师面对的最基本最紧要的问题。有效的讲解就是要在最短的时间内,根据学生的需求,采用最有效的方法,使学生最大限度掌握所学的知识,对所学习的知识能够融会贯通,举一反三,而且有助于培养和提高学生的各种能力。 The ability of primary school students to learn independently is poor. The learning of knowledge is mainly guided by the professors and the teachers. Therefore, how to enable students to effectively master the knowledge that he should master is the most basic and urgent problem each teacher faces. To explain effectively is to use the most effective method in the shortest possible time and according to the needs of students to enable students to master the knowledge they have learned to the best of their knowledge and to bring about the best of both worlds and to help foster and enhance students’ Various abilities.