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教学内容:义务教育课程标准实验教科书西师大版小学数学四年级(下)P126-P127。教学目标:1.通过猜想、探究,理解平均数的意义和特点,掌握求平均数的方法,会求平均数。2.经历探索求平均数的过程,培养操作、观察、归纳、概括和自主探究的能力。3.通过对平均数极值的讨论,使学生在探究中获得积极的情感体验和思维方法,激发学生学习数学的兴趣,增强学生学好数学的信心。教学重点:理解平均数的意义和特点,掌握求平均数的方法,并能灵活运用所学的知识解决实际问题。
Teaching content: Compulsory education curriculum standard experimental textbook West division large version of elementary school mathematics fourth grade (below) P126-P127. Teaching Objectives: 1. Through the guess, explore, understand the meanings of the meanings and characteristics of the average method to master, will seek the average. 2. Experience to explore the process of averaging, training, observation, induction, generalization and self-exploration capabilities. Through the discussion of the extreme value of the average, students can obtain a positive emotional experience and thinking method during the inquiry, stimulate their interest in learning mathematics and enhance their confidence in learning mathematics. Teaching focus: Understand the meaning and characteristics of the average, master the method of averaging, and can use the knowledge learned to solve practical problems.