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“复数”这章可分成三个单元:复数的概念,复数的运算,复数的简单应用。以下按单元谈几点不成熟的意见。一、复数的概念为使学生能较深刻地理解和掌握复数的概念,在教学中要抓住以下两个关键。 1.正确地理解数的形成与发展和新数i的引进。在讲解数的发展时可通过具体例子向学生简单地介绍扩充数集必须遵循的四条原则:(1)增添新元素,即旧数集是新数集的真子集;(2)在新的数集里定义一些基本关系(相等)和运算(主要讲加法,乘法),使原有的一些主要性质能得到保持;(3)旧数集的元素在新数集中运算关系与旧数集中运算关系应无矛盾;(4)新的数集能解决旧数
The “plural” chapter can be divided into three units: the concept of plurals, the operation of plurals, and the simple application of plurals. The following sections discuss some of the immature opinions by unit. First, the concept of pluralism is to enable students to understand and grasp the concept of plural numbers in depth. In the teaching, we must grasp the following two keys. 1. Correctly understand the formation and development of numbers and the introduction of new numbers i. In explaining the development of numbers, we can briefly introduce to students the four principles that must be followed to expand a set of numbers: (1) Add new elements, ie, the old set of numbers is the true subset of the new set of numbers; (2) In the new number The set defines some basic relations (equalities) and operations (mainly speaking addition, multiplication), so that some of the original main features can be maintained; (3) the operation of the old number set of elements in the new number set operation relationship with the old number set There should be no contradiction; (4) New number sets can solve old numbers