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圆周率是运用广泛的定值。那么,怎样教学圆周率(以下用“π代替),才能使学生理解清楚记得牢,用得准,用得活?笔者浅见: 一、注重固周率概念教学,渗透思想品德教育。 数学概念是从客观中得出来的,只有明确概念所反映的客观事物的实际原形,才能真正理解和掌握概念。据此,在概念教学中,应充分运用感性材料,创设一些学生易接受且具有吸引力的教学情境,激发学生的求知欲,调动他们的学习兴趣,促使其自觉的积极思维,主动获取知识。
Pi is the use of a wide range of fixed value. So, how to teach PI (the following "π instead), in order to enable students to understand clearly remember jail, accurate, and live? I see shallow: First, pay attention to the concept of fixed-cycle teaching, infiltration of moral education. Obtained from the objective, only the clear idea of the objective reality reflected in the original form, can truly understand and grasp the concept.Accordingly, in the concept of teaching, should make full use of perceptual material, to create some students acceptable and attractive teaching Situations to stimulate students' curiosity, to mobilize their interest in learning, to promote their conscious positive thinking, take the initiative to acquire knowledge.