天才在于勤奋 作文
狗拿耗子2022-10-04 11:39:541条回答
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为什么受伤的我 共回答了12个问题 |采纳率91.7%- 爱迪生是一位伟大的电学家、发明家。他生于美国俄亥俄州的迈兰，自幼就在父亲的木工厂做工，由于家庭贫困，一生只在学校读过三个月书。但他从小热爱科学，自己刻苦钻研，醉心于发明，正式登记的发明达1328种，被称为世界发明大王。同学们，你们知道爱迪生为什么能发明那么多东西，秘诀就在于你不仅有聪明的头脑，更会努力去做，所以有那么大的成就。读了下面这个关于爱迪生的故事，你就会明白勤奋是多么重要了。 爱迪生长大后，发明了许多发明。爱迪生20岁出头开始研究电灯，历时10余年，他先后选用了竹棉、石墨、钽……等等上千种不同物质作灯丝材料进行试验，时常通霄达旦，有一次他和助手们竟连续工作5昼夜。在爱迪生发明灯泡的时候他失败了很多次，当他用到一千多种材料做灯丝的时候，助手对他说：“你已经失败了一千多次了，成功已经变得渺茫，还是放弃吧！”但爱迪生却说：“到现在我的收获还不错，起码我发现有一千多种材料不能做灯丝。”最后，他经过六千多次的实验终于成功了。1879年爱迪生用碳丝作为白炽灯丝，并点燃40小时。由于碳丝表面多孔，性脆，强度很低。不久被钨丝代替。 其实爱迪生能发明出那么多种发明，靠的不止是聪明的头脑，还有他坚持不懈的试验和永不放弃的精神。他曾经说过一句话：“发明是百分之一的灵感加上百分之九十九的血汗。” 对呀，即使你有聪明的头脑，即使你有再大的本事，不经过努力是不会成功的。同学们，听了爱迪生的故事，是不是给了你一些启发？
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究其原因有两个：一是学习态度问题：有的同学在学习上态度暧昧,说不清楚是进取还是退缩,是坚持还是放弃,是维持还是改进,他们勤奋学习的决心经常动摇,投入学习的精力也非常有限,思维通常也是被动的、浅层的和粗放的,学习成绩也总是徘徊不前.反之,有的同学学习目的明确,学习动力强劲,他们拥有坚韧不拔的意志、刻苦钻研的精神和自主学习的意识,他们总是想方设法解决学习中遇到的困难,主动向同学、老师求教,具有良好的自我认识能力和创造学习条件的能力.
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由此可见,正确的学习态度和科学的学习方法是学好数学的两大基石.这两大基石的形成又离不开平时的数学学习实践,下面就几个数学学习实践中的具体问题谈一谈如何学好数学.
一、数学运算
运算是学好数学的基本功.初中阶段是培养数学运算能力的黄金时期,初中代数的主要内容都和运算有关,如有理数的运算、整式的运算、因式分解、分式的运算、根式的运算和解方程.初中运算能力不过关,会直接影响高中数学的学习：从目前的数学评价来说,运算准确还是一个很重要的方面,运算屡屡出错会打击学生学习数学的信心,从个性品质上说,运算能力差的同学往往粗枝大叶、不求甚解、眼高手低,从而阻碍了数学思维的进一步发展.从学生试卷的自我分析上看,会做而做错的题不在少数,且出错之处大部分是运算错误,并且是一些极其简单的小运算,如71-19=68,（3+3）2=81等,错误虽小,但决不可等闲视之,决不能让一句“马虎”掩盖了其背后的真正原因.帮助学生认真分析运算出错的具体原因,是提高学生运算能力的有效手段之一.在面对复杂运算的时候,常常要注意以下两点：
①情绪稳定,算理明确,过程合理,速度均匀,结果准确；
②要自信,争取一次做对；慢一点,想清楚再写；少心算,少跳步,草稿纸上也要写清楚.
二、数学基础知识
理解和记忆数学基础知识是学好数学的前提.
★什么是理解?
按照建构主义的观点,理解就是用自己的话去解释事物的意义,同一个数学概念,在不同学生的头脑中存在的形态是不一样的.所以理解是个体对外部或内部信息进行主动的再加工过程,是一种创造性的“劳动”.
理解的标准是“准确”、“简单”和“全面”.“准确”就是要抓住事物的本质；“简单”就是深入浅出、言简意赅；“全面”则是“既见树木,又见森林”,不重不漏.对数学基础知识的理解可以分为两个层面：一是知识的形成过程和表述；二是知识的引申及其蕴涵的数学思想方法和数学思维方法.
★什么是记忆?
一般地说,记忆是个体对其经验的识记、保持和再现,是信息的输入、编码、储存和提取.借助关键词或提示语尝试回忆的方法是一种比较有效的记忆方法,比如,看到“抛物线”三个字,你就会想到：抛物线的定义是什么?标准方程是什么?抛物线有几个方面的性质?关于抛物线有哪些典型的数学问题?不妨先写下所想到的内容,再去查找、对照,这样印象就会更加深刻.另外,在数学学习中,要把记忆和推理紧密结合起来,比如在三角函数一章中,所有的公式都是以三角函数定义和加法定理为基础的,如果能在记忆公式的同时,掌握推导公式的方法,就能有效地防止遗忘.
总之,分阶段地整理数学基础知识,并能在理解的基础上进行记忆,可以极大地促进数学的学习.
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学数学没有捷径可走,保证做题的数量和质量是学好数学的必由之路.
1、如何保证数量?
① 选准一本与教材同步的辅导书或练习册.
② 做完一节的全部练习后,对照答案进行批改.千万别做一道对一道的答案,因为这样会造成思维中断和对答案的依赖心理；先易后难,遇到不会的题一定要先跳过去,以平稳的速度过一遍所有题目,先彻底解决会做的题；不会的题过多时,千万别急躁、泄气,其实你认为困难的题,对其他人来讲也是如此,只不过需要点时间和耐心；对于例题,有两种处理方式：“先做后看”与“先看后测”.
③选择有思考价值的题,与同学、老师交流,并把心得记在自习本上.
④每天保证1小时左右的练习时间.
2、如何保证质量?
①题不在多,而在于精,学会“解剖麻雀”.充分理解题意,注意对整个问题的转译,深化对题中某个条件的认识；看看与哪些数学基础知识相联系,有没有出现一些新的功能或用途?再现思维活动经过,分析想法的产生及错因的由来,要求用口语化的语言真实地叙述自己的做题经过和感想,想到什么就写什么,以便挖掘出一般的数学思想方法和数学思维方法；一题多解,一题多变,多元归一.
②落实：不仅要落实思维过程,而且要落实解答过程.
③复习：“温故而知新”,把一些比较“经典”的题重做几遍,把做错的题当作一面“镜子”进行自我反思,也是一种高效率的、针对性较强的学习方法.
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小题2:C
小题3:D
1年前查看全部
- 康德认为天才具有哪些特点?
甲壳虫棋棋1年前1
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情定依然 共回答了22个问题
|采纳率90.9%康德从主观能力的角度考察了天才的特点,第一,天才是艺术才能,不是科学才能； 第二,作为艺术的才能,天才以知性与想象力的一定关系为前提； 第三,天才不是表现一定的概念而是表现审美观念的能力； 第四,天才是在在想象力与知性的协调中表现出来的主观合目的性1年前查看全部
- 寻找英语天才Question mark is the key to all sciences
telecom1121年前5
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别拿豆包不当ii 共回答了15个问题
|采纳率86.7%“问号”是开启任何一门科学的钥匙.1年前查看全部
- 英语天才进来How _____is it from your house to your school It ___me
英语天才进来
How _____is it from your house to your school
It ___me about 25 minutes to walk to school every day
A.far take B.far takes 答案是B``take为什么加S?白菜的菜1年前1 -
huangshili 共回答了18个问题
|采纳率83.3%It是主语是第三人称单数所以用takes
这是常用语法不用天才就知道了1年前查看全部
- 英语天才885!I'm going to travel to Shandong Province.I'm going t
英语天才885!
I'm going to travel to Shandong Province.
I'm going to Shandong Province for my travel.
地不地道?
如果,都不地道,885写一个地道的!2007mj281年前5 -
peissss 共回答了20个问题
|采纳率85%第二个for my travel不好
第一个可以
或也可以说
I'm traveling to Shandong.
I'm going on a trip to Shandong.1年前查看全部
- 天才在于勤奋,_______________.
mn32201qqv1年前1
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yanx98 共回答了11个问题
|采纳率90.9%天才在于勤奋,知识在于积累1年前查看全部
- 天才=1%灵感+99%汗水 英文原话?
天才=1%灵感+99%汗水 英文原话?
有人说真正的话是:"天才就是1%的灵感加上99%的汗水,但那1%的灵感是最重要的,甚至比那99%的汗水都要重要." 那么到底真正的英文原话是什么呢?到底后面那句存在吗?lyeed11年前3 -
kimi661O 共回答了21个问题
|采纳率100%Genius is one percent inspiration and ninety-nine percent perspiration
语出爱迪生
原话,后面那句是后人加的1年前查看全部
大家在问
- 1关于《论语十则》出三个简答题和简答题的答案
- 2He couldn't come back today 谢
- 3My shoes need___
- 4如果一个数的平方根为2x+3和3x-8,求这个数（注明过程）
- 5一张圆形纸片的直径是20厘米,对折再对折,得到一个新图形,计算这个图形的周长.
- 6昨夜有雪(转载) 作文
- 7He didn’t____ what I said because his mind was on something
- 8变压器的铁芯为什么要用硅铜片叠成?用整块铁行否?不用铁芯行不行?
- 9A B C D E F*3=B C D E F A.那么A B C D E 各代表什么数字
- 10已知函数g（x）=x3-3tx2-3t2+t（t＞0）
- 11某有机物A的结构简式如图所示,A在NaOH水溶液中加热得到B和芳香族化合物C.
- 12能简算的要简算 1/7×5/12+5/12÷7/5 15÷9×5/9 17/35×36
- 13温室效应主要是由大气中的（ ）含量增加所致．
- 14梁秋实写的鸟中,杜鹃是——；白鹭总喜欢在—— 在作者眼里,笼子中的鸟是 的,它们 .
- 15stereo headphone是什么意思