【正文】 the calculation, the calculation is the key of the elementary school mathematics 、把好口算關(guān)著名數(shù)學(xué)家裘宗滬指出：如果你想學(xué)好數(shù)學(xué)，首先要會(huì)算，而且要算得好，心算是一種思維能力。在教學(xué)中，讓學(xué)生用數(shù)學(xué)的眼光去觀察、認(rèn)識(shí)周圍的事物，用數(shù)學(xué)的概念與語言去反映和描述社會(huì)生產(chǎn)和生活中的問題，結(jié)合生活中的具體事例去教學(xué)數(shù)學(xué)知識(shí)，讓學(xué)生感受到數(shù)學(xué)就在身邊，生活中處處有數(shù)學(xué)，從而以積極的心態(tài)投入學(xué)習(xí)，體驗(yàn)“數(shù)感”。18=360247。又如：計(jì)算5764+3821的和，要用到4項(xiàng)加法口算，任何一個(gè)環(huán)節(jié)發(fā)生錯(cuò)誤，都可導(dǎo)致全盤出錯(cuò)。在教學(xué)中，我每天在課堂上利用35分鐘時(shí)間進(jìn)行口算訓(xùn)練，或視算或聽算，或在作業(yè)中抄一、兩道脫式計(jì)算題，每天批閱并及時(shí)反饋，逐步提高學(xué)生的計(jì)算能力。同時(shí)，經(jīng)常教學(xué)生一些巧算的方法，也可使其計(jì)算速度大大提高。4100= 324 present 4 x 324 x 324409125=408125+125=408247。但如果首次感知不準(zhǔn)確，那么造成的不良后果在短期內(nèi)是難以清除的。算法多樣化不是要求每個(gè)學(xué)生都用多種方法解決同一問題，而是要鼓勵(lì)學(xué)生獨(dú)立思考，用適合自己的方法解決，有能力的可以運(yùn)用多種方法，沒有這種需求的學(xué)生只用一種即可。t required that every student(should)use a variety of methods to solve the same problem, but rather to encourage students to think independently and solve with suitable methods, ability can use a variety of methods, without the need of students in a algorithm diversity, also want to pay attention to the optimization method, for students to e up with every kind of right way to give affirmation, persuade students give up their backward trival, to follow the outstanding, simple method, so as to make their thinking ability constantly for middle and senior each kind of algorithm, can calculate, make its own instructions in order to prevent the “l(fā)earning, don39。因此，重視學(xué)生估算能力的培養(yǎng)，不僅可以使學(xué)生的思維更加靈活，而且對(duì)學(xué)生的直覺思維能力的培養(yǎng)有很大的幫助。 ability to estimate, therefore, not only can make students39。估算過程中，由于學(xué)生的生活背景、思維方式的不同，估算結(jié)果也不一定一樣，因此，允許估算結(jié)果與準(zhǔn)確值之間有一定范圍的誤差，正負(fù)誤差均可。40=10003927 present 35 material present 40 4000 = 1000聯(lián)系實(shí)際估算法。In addition to classroom teaching methods, the most effective way is to let students exercise in real life, in dealing with specific 、增強(qiáng)學(xué)生的實(shí)踐能力數(shù)學(xué)來源于生活，又服務(wù)于生活，而計(jì)算則是解決實(shí)際生活問題的重要手段。1, the present way of life.“New standard” pointed out: through to real life situations, make students experience, feel and understand the meaning of number and operations, to be presented to students a lot of realistic background, closely related to mathematics and the in teaching 36 x 4, I import in the following way: a top 36 yuan, how much do you need to buy 4 such blouse? This way of life for the calculation type questions, students are willing to 、日常生活數(shù)學(xué)化。2, daily life in the life mathematics, such as street to buy clothes, about how much money need to take, need to estimate。 math error reasons not to do, but not by heart, so I think to make students form good habits as 、規(guī)范書寫。Write a “7” scrawled “1”, and cause calculation is strict with students writing format, and lead by example, being a good role 、認(rèn)真審題。t rush to laid hands on him, first have to look carefully, clear which step should be calculated, which is calculated after step, where to find a find method can be applied to calculation of, do know, and then carefully calculated, it is called “knife don39。不論題目是否要求驗(yàn)算，都要求學(xué)生必須做到，逐漸養(yǎng)成學(xué)生良好的驗(yàn)算習(xí)慣。4, there is a fault that is every time I send the homework, students are required to immediately turn to put the wrong topic review time, and see what went wrong, and timely correction, so that further deepening the students understanding of calculate theory, algorithm, achieve the goal of improve the puting capability.第二篇：提高小學(xué)生的數(shù)學(xué)計(jì)算能力提高小學(xué)生的數(shù)學(xué)計(jì)算能力一個(gè)人的數(shù)學(xué)計(jì)算能力主要包含三個(gè)方面：即計(jì)算結(jié)果的準(zhǔn)確性，計(jì)算方法的技巧性和計(jì)算速度的快捷性，要想提高小學(xué)生數(shù)學(xué)計(jì)算能力，我認(rèn)為要從下面四個(gè)方面下功夫：一、讓學(xué)生熟練掌握運(yùn)算法規(guī)：在小學(xué)階段，學(xué)生要學(xué)到三類數(shù)——整數(shù)（自然數(shù)）、小數(shù)和分?jǐn)?shù)，這三類數(shù)都要進(jìn)行四則運(yùn)算——加、減、乘、除，每一類數(shù)的每一種運(yùn)算都有自己特定的運(yùn)算法則，熟練掌握各類運(yùn)算法則是全面提高小學(xué)生數(shù)學(xué)計(jì)算能力的立足點(diǎn)和出發(fā)點(diǎn)。二、注意培養(yǎng)學(xué)生估算能力 新課程把培養(yǎng)學(xué)生的估算能力列入其中，充分反映出估算在數(shù)學(xué)計(jì)算和實(shí)際生活中的重要性，估算能力也是一個(gè)人計(jì)算能力中相當(dāng)重要的一個(gè)方面，具備良好的估算能力，實(shí)踐證明有四個(gè)好處：幫助我們預(yù)知計(jì)算結(jié)果；可以提高數(shù)學(xué)分析能力；可以解決實(shí)際生活問題；檢查結(jié)果是否基本正確。除教材中的口算題目外，教師應(yīng)該再精心編制一定數(shù)量的涉及多種口算方法的練習(xí)題，在自習(xí)課上讓學(xué)生反復(fù)練習(xí)，我們要把口算訓(xùn)練穿插于整個(gè)數(shù)學(xué)教學(xué)的全過程之中，使口算訓(xùn)練經(jīng)?；?、長期化，逐步提高學(xué)生數(shù)學(xué)計(jì)算的快捷性。怎樣提高學(xué)生的計(jì)算能力呢？下面談?wù)勛约旱膸c(diǎn)拙見，請(qǐng)各位老師給予指點(diǎn)：一、創(chuàng)境激趣，培養(yǎng)品質(zhì)，讓學(xué)生說：“我能行”。根據(jù)小學(xué)生注意力不集中、不穩(wěn)定，容易受到外界和某些內(nèi)部因素的影響的特點(diǎn)，教師在練習(xí)的時(shí)間和數(shù)量上合理安排，采取“短時(shí)、少量、多次”的方法，避免學(xué)生疲勞、厭煩現(xiàn)象的產(chǎn)生，使學(xué)生的注意力能穩(wěn)定地集中在練習(xí)對(duì)象上，從而保證計(jì)算的準(zhǔn)確性。二、全方位引導(dǎo)，合理訓(xùn)練，讓學(xué)生說：“我也行”。同時(shí)，重視師生演示操作作用 ,并把操作與語言結(jié)合起來, 加強(qiáng)學(xué)生的直觀認(rèn)識(shí)，:在教授20以內(nèi)的進(jìn)位加法時(shí),讓學(xué)生充分地”說”的同時(shí),邊動(dòng)手 ,邊思考,讓學(xué)生體會(huì)“湊十”過程.（2）、提倡估算,讓學(xué)生的直觀思維活躍起來，進(jìn)而提高學(xué)生的計(jì)算能力。（2）對(duì)比練習(xí)。教師要及時(shí)地發(fā)現(xiàn)學(xué)生作業(yè)中出現(xiàn)的問題，收集錯(cuò)題, 定期上一節(jié)糾正錯(cuò)誤課，讓學(xué)生會(huì)診,當(dāng)“錯(cuò)