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【教材分析】学生在之前的数学学习中,已经学习了四则混合运算,掌握了常规的数字计算的方法,具备了一定的具体计算的能力。随着学生数学思维和学习品质的提升,需要让他们认识和掌握用字母表示数字的数学学习方法,学会抽象的数学思维,并为方程等知识的学习打好基础。【教学目标】(一)知识与技能:认识用字母表示数的意义、作用与表示方法;感知用字母表示数的必要性及符号化思想。(二)过程与方法:形成用字母表示数运用意识,掌握实际问题解决过程中
【Textbook Analysis】 Students in the previous math study, has learned four mixed computing, mastered the conventional method of digital computing, with a certain amount of specific computing power. As students improve their mathematical thinking and learning quality, they need to understand and master mathematical learning methods that use alphanumeric numbers, learn abstract mathematical thinking, and lay a solid foundation for the study of equations and other knowledge. 【Teaching Objectives】 (A) of knowledge and skills: to recognize the meaning of the number of letters, the role and means of expression; sense of the need to use alphanumeric representation and symbolic thinking. (B) the process and methods: the formation of the number of letters to use awareness, grasp the actual problem-solving process