一、巧设发现式问题串,水到渠成地引入新知识有些数学概念是已有概念的扩充,若能以学生已有的知识、经验、能力为基础,贴近学生所学内容,巧设发现式问题串,既能符合认知规律,以水到渠成地引入新概念,又能让学生真正参与、记忆深刻、易于接受,从而能有效地促进知识的同化。 First, the clever set of discovery-style string of problems, the introduction of new knowledge at an opportune time Some of the mathematical concept is the expansion of the existing concept, if the student’s existing knowledge, experience, ability, close to the students learned content, Strings can not only accord with the law of cognition, but also introduce new concepts in a timely manner, but also enable students to truly participate, remember and accept easily so as to effectively promote the assimilation of knowledge.