要解决几何的证明问题,就要学会逻辑推理。几何证明过程的描述,是初学几何的学生很难入门的事情。我在教学时着重于方法的指导,重点介绍了“执果索因”的分析方法,让学生从结果入手,逐层剥笋,寻找原因,找到源头,明白已知条件的用处,然后再由条件到结论,把过程写出来。学生在学习中强调“一看、二悟、三对照”,一看,看课本例题,看老师的板书;二悟,通过对例题和教师板书的观察,悟出其中的道理,形成一个清晰的思路;三对照,就是写出解题过程后与他人对照,请老师指点。
"Freedom and progress are the goals of art, just as they are the goal of our whole life," said the great musician Beethoven.
This winter holiday, I read a great book - celebrity biography. The book touched my heart deeply. The author of celebrity biography is French romain rolland. The book is composed of three biographies of Beethoven, Michelangelo and Tolstoy.
Each of these three biographies enlighten me. One of the things that struck me most was Beethoven. Beethoven devoted his life to music, but fate always played a trick on him. He was sickly and sickly in his childhood. At the age of 3, hearing gradually declines, as a musician, this is a fatal blow, and his character, determined, does not bow to fate and continues to advance on the music road. Middle-aged, he hearing has completely recession, can only use to communicate with people, but this does not make him stop writing, but not to abandon all, into the arms of nature, continue to compose the immortal music chapter.
"Symphony of destiny" is one of Beethoven's most familiar and favorite works. The hero of Beethoven's eyes was so brave, so unyielding, so unyielding, as Beethoven himself was to write the music of the struggle with fate. Every time I close my eyes, listen to the music, mind is such a scenario: a brave knight, holding a sword, difficulties, setbacks and pain like the enemy, knight along the way encounter the enemy, knight did not flinch, but cut down all the way, the lost the courage, the triumphant return. When I finally opened my eyes, I found that I had the courage to overcome my courage and courage. After that, whenever I'm discouraged, in my heart silently singing "destiny symphony", encourage myself to like Beethoven don't blindly drown by misery and disaster, throat to do take fate of the strong!
"Man, you must strive for yourself!" This is one of the words Beethoven tells people. Yes, people can't cling to vegetation, create life with tough, bold heart and create art!
This "celebrity biography" is about the tribulations and difficulties of the three famous men on the road to fame, from the power of persistence to the disintegration of power even to despair. They abandoned a lot of love and friendship on the way to fame. Finally, they set foot on the road to success.
The first is a belief that, suffering from pain, still does not put down music -- Beethoven. Although he was deaf, he said proudly, "listen to my heart music, you don't understand how I feel! A band can only play music that I expect to write in a minute!" Yeah! His music set of classicism is the beginning of romanticism, and its creation reflects the progressive thoughts of the rising period of the bourgeoisie.
Then a tragic, still sculptural belief - Michelangelo. His pain came from human malice. He was born to fight, to conquer! It is precisely because of this that his artistic creation has been deeply influenced, often with the realism of the civil class at the time of the patriotism and freedom of the struggle of the spirit of the painting. This kind of cup is presented in grand and magnificent form, and his hero is both an ideal symbol and a reflection of reality.
The last is a mirror that Lenin once called "the Russian revolution." Looking around Tolstoy's life, he was not only a literary giant, but also the narrative of life, religion, and society that made him a world-leading thinker. Tolstoy never laid down his obsession with the meaning of life.
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