整式的加减是“数与代数”领域的重要内容之一,是七年级上册的学习重点之一.整式的加减是代数式运算的重要内容之一,其核心学习目标在于进一步强化符号意识,提高代数推理能力.一、进一步体会用字母表示数的强大作用,进一步强化符号意识从用字母表示数,到整式运算,是数学学习从数及其运算领域真正走向代数学领域的标志,而人类认识从数发展为代数学恰恰是一 Integer addition and subtraction is one of the important contents in the field of “Number and Algebra”, and it is one of the focuses of study in the seventh grade. Integer addition and subtraction is one of the important contents of algebraic arithmetic. Its core learning objective is to further strengthen the symbol Awareness and improve the ability of algebraic reasoning.First, to further understand the powerful role of the number of letters, to further strengthen the symbolic consciousness from the number of letters to the integer arithmetic is the number of mathematical learning and its real field of arithmetic to mark the field of algebra, The development of human knowledge from algebra is exactly one