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教学内容:北师大版小学数学四年级下册第85-87页教学目标:(1)结合具体情境,理解用字母表示数的意义,学会字母表示数的方法,并能用它表示简单的数量关系。(2)在探索用字母表示数的过程中,感受到符号的简洁美和符号化思想。(3)在探索的过程中,激发学生学习数学的兴趣。教学重点:理解字母表示数的意义,学会用字母表示数的方法。教学难点:理解含有字母的式子既表示结果也表示关系教学过程:
Teaching content: Beijing Normal University version of the elementary school mathematics grade four volumes 85-87 teaching objectives: (1) combined with specific situations, understand the meaning of the number of letters, learn how to express the number of letters, and can use it to indicate simple Number of relations. (2) Feel the simplicity and symbolism of symbols in the process of exploring the number of alphanumeric characters. (3) in the process of exploration, to stimulate students interest in learning mathematics. Teaching Focus: Understand the significance of the number of letters, learn to use letters to express the number of ways. Difficulties in teaching: Understand the formula with letters both that the results also expressed the relationship between teaching process: