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在学生掌握三角函数的性貭的基础上,进行“两角和与两角差的三角函数,倍角与半角的三角函数”的教学,一般来說,学生較易接受。但是,本章教材包含較多的公式,要使学生透彻地理解和系統地掌握这些公式,并能把这些知識熟练地运用到实际中去,仍然是一項十分艰巨而复杂的工作。現在把我在这一单元是怎样組織学生练习的,介紹出来,是否妥当,請大家指教。一、单元练习的目的要求为了使学生把已获得的知識、技能、技巧加以深化、系統化和概括,进一步达到巩固,組織单元练习具有重要的意义。我們认为单位练习的主要目的如下: 1.培养学生解各种类型与性貭的数学习題的技能和技巧。 2.使学生对所学知識得到进一步的加深、理解、記忆和巩固,并解决学生存在的問題。
On the basis of students’ mastery of the trigonometric functions, the teaching of “trigonometric functions with two angles and two angles, and trigonometric functions with multiple angles and half angles” is generally accepted by students. However, the textbooks in this chapter contain more formulas. It is still a very arduous and complicated task for students to thoroughly understand and systematically master these formulas and apply them to practice. Now, how do I organize students to practice in this unit and introduce it? If it is appropriate, please advise. First, the purpose of unit exercises In order to enable students to deepen, systematize, and generalize the acquired knowledge, skills, and skills, and further consolidate, the organizational unit practice is of great significance. We believe that the main objectives of unit practice are as follows: 1. Develop skills and techniques for students to solve multiple types and problems of sexual problems. 2. To enable students to further deepen, understand, memorize, and consolidate what they have learned, and to solve students’ problems.