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1、Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent system and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students knowledge of the sit
2、uation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arrangement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students wea
3、knesses in each knowledge, put it as a review of key, combined with the problem of textbooks to review, both to avoid casting a net tihaizhanshu, and improve the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already hav
4、e a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of knowledge networks. Exercises for students to be representative, fine, complete, to live, and earnestly do a problem learning a method, class of p
5、ass was to get time efficient review results. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the m
6、aximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading cacuminal, nasal sound, l
7、ight, and retroflex sounds), the correct write consonants, vowels and syllables. 2,. main types according to the order of the alphabet of Hanyu Pinyin alphabetical order; fill in the appropriate uppercase and lowercase letters; see phonetic writing words; pinyin to write sentences with dot to select
8、 the correct pronunciation of the word; to bring some initial consonants or vowels, word selection. Second, the main types of words (1) Ruby written words; (2) to bring Word to select the correct pronunciation; (3) use a sequencer and radical character lookup method 第二十一章第二十一章 二次根式二次根式 教材内容教材内容 1本单元
9、教学的主要内容： 二次根式的概念；二次根式的加减；二次根式的乘除；最简二次根式 2本单元在教材中的地位和作用： 二次根式是在学完了八年级下册第十七章反比例正函数 、第十八章勾股定理及其 应用等内容的基础之上继续学习的，它也是今后学习其他数学知识的基础 教学目标教学目标 1知识与技能知识与技能 （1）理解二次根式的概念 （2）理解（a0）是一个非负数， （）2=a（a0） ，=a（a0） aa 2 a （3）掌握（a0，b0） ，=；abababab =（a0，b0） ，=（a0，b0） a b a b a b a b （4）了解最简二次根式的概念并灵活运用它们对二次根式进行加减 2过程与方法过
10、程与方法 （1）先提出问题，让学生探讨、分析问题，师生共同归纳，得出概念再对概念的 内涵进行分析，得出几个重要结论，并运用这些重要结论进行二次根式的计算和化简 （2）用具体数据探究规律，用不完全归纳法得出二次根式的乘（除）法规定，并运 用规定进行计算 （3）利用逆向思维，得出二次根式的乘（除）法规定的逆向等式并运用它进行化 简 （4）通过分析前面的计算和化简结果，抓住它们的共同特点，给出最简二次根式的 概念利用最简二次根式的概念，来对相同的二次根式进行合并，达到对二次根式进行计 算和化简的目的 3情感、态度与价值观情感、态度与价值观 通过本单元的学习培养学生：利用规定准确计算和化简的严谨的科学
11、精神，经过探索 二次根式的重要结论，二次根式的乘除规定，发展学生观察、分析、发现问题的能力 教学重点教学重点 1二次根式（a0）的内涵（a0）是一个非负数；（）aaa 2a（a0） ； =a（a0）及其运用 2 a 2二次根式乘除法的规定及其运用 3最简二次根式的概念 4二次根式的加减运算 Do the following three main points: 1 find out the weak. Review process is to sum up the knowledge on the one hand, make the knowledge more coherent syste
12、m and regularity, but also let the students themselves, looks up the deficiencies. So, we teachers to understand the students knowledge of the situation prior to the review, students not only found widespread deficiencies, but also some shortcomings, for these well designed programs, reasonable arra
13、ngement of time, this review is more targeted and more effective. For example, you can design a form for investigation, understanding students weaknesses in each knowledge, put it as a review of key, combined with the problem of textbooks to review, both to avoid casting a net tihaizhanshu, and impr
14、ove the efficiency of review. 2, good collation. Through six years of study, students in the basics, reading method, exercises, and so already have a certain degree of accumulation, the review stage, teachers should know how to guide the students to label the accumulation, process, form a system of
15、knowledge networks. Exercises for students to be representative, fine, complete, to live, and earnestly do a problem learning a method, class of pass was to get time efficient review results. 3, pay attention to use. The accumulation of knowledge is ultimately to use, therefore, review the situation
16、 and life situation to be created in a variety of languages, guide students on the basis of the previous accumulation of knowledge to use to the maximum, and really apply what they have learned. Second, review the content and strategy of the first part: the basics (a) 1, review the main points of Hanyu Pinyin is able to recite and write down the alphabet of Hanyu Pinyin; accurate spelling pronunciation (after reading
