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怎樣提高小學(xué)生數(shù)學(xué)計(jì)算能力之五(存儲(chǔ)版)

  

【正文】 in the water, to the cultivation of students39。35≈4000247。如在教學(xué)364時(shí),我以如下方式導(dǎo)入:一件上衣36元錢(qián),買(mǎi)4件這樣的上衣需要多少錢(qián)?這種賦計(jì)算式題予生活的方法,學(xué)生非常樂(lè)于接受。Good habits and directly affects the calculation speed and the teaching, I found that students39。2, serious is the key to the rapid and accurate every putational problems, don39。我每次發(fā)下作業(yè)本后,便要求學(xué)生立即翻看,把錯(cuò)題重新審視一次,看看錯(cuò)在哪里,并及時(shí)訂正,這樣進(jìn)一步加深了學(xué)生對(duì)算理、算法的理解,達(dá)到提高計(jì)算能力的目的。從現(xiàn)在學(xué)生計(jì)算的情況來(lái)分析,有的學(xué)生計(jì)算能力低固然有概念不清,沒(méi)有真正理解算理和熟練掌握算法等原因。在四則運(yùn)算中,要培養(yǎng)學(xué)生沉著、冷靜 的學(xué)習(xí)態(tài)度。教師要教育學(xué)生養(yǎng)成計(jì)算后認(rèn)真檢查驗(yàn)算的習(xí)慣,把檢驗(yàn)當(dāng)做計(jì)算題不可缺少的環(huán)節(jié)。只有這樣,才能更好地提高學(xué)生的計(jì)算能力。三培養(yǎng)細(xì)心檢驗(yàn)的習(xí)慣??辞孱}中的數(shù)字和運(yùn)算符號(hào),標(biāo)出先算哪一步,后算哪一步,確定什么地方可用口算,什么地方要用筆算,是否可用簡(jiǎn)便計(jì)算?!蹦敲矗覀円痪€(xiàn)教師又如何將這一理念的精神落實(shí)到我們的數(shù)學(xué)課堂呢?關(guān)鍵是要注重學(xué)生良好計(jì)算習(xí)慣的培養(yǎng)。3, diligently is a kind of habit, is also a kind of whether subject requirement, all students are required to have to do, gradually to develop students39。這是快速、準(zhǔn)確計(jì)算的關(guān)鍵。Ready to buy how many pieces of goods, also need to statistics and putation, so paying conscious attention to mathematics education to along with the parents to buy food, pay special attention salesman is how to quickly calculate the learned at the same time, also want to use the methods of estimation, qiao is help to calculate a calculate, in order to improve their puting 、養(yǎng)成教育不容忽視良好的習(xí)慣,直接影響著計(jì)算的速度和準(zhǔn)確率。Mathematics es from life and serves life, and the calculation is the important means to solve the problem of real 、呈現(xiàn)方式生活化。如:1, the approximate the actual calculation, according to the number two at the same time for large or for small at the same time, or a big one for small forecast, so that verbal arithmetic is process, because the student39。同時(shí),加強(qiáng)估算,可以加深學(xué)生對(duì)數(shù)字的認(rèn)識(shí),促進(jìn)數(shù)感的培養(yǎng),增強(qiáng)應(yīng)用數(shù)學(xué)的意識(shí),提高解決實(shí)際問(wèn)題的能力。提倡算法多樣化,也要注意方法的優(yōu)化,對(duì)于學(xué)生想出的每一種正確方法都給予肯定,說(shuō)服學(xué)生放棄自己的落后繁瑣觀(guān)點(diǎn),去遵循優(yōu)秀、簡(jiǎn)潔的方法,這樣才能使自己的思維能力不斷提高。81000+125409 * 125 = 408 * 125 + 125 = 408 present 8 x 1000 + 125還有一些除法試商法:差數(shù)試商法、同頭無(wú)除商八九法(當(dāng)被除數(shù)和除數(shù)最高位上的數(shù)字相同時(shí),俗稱(chēng)“同頭”,被除數(shù)的前幾位比除數(shù)小,且除數(shù)與被除數(shù)次高位上的數(shù)的差不超過(guò)最高位時(shí),可直接用八與九試商)、中數(shù)試商法、折半試商法等等,這些都是學(xué)生快算所必須掌握的基本方法。(1)using 35 minutes daily oral the teaching, I every day in the classroom use of 35 minutes oral training, or ShiSuan or listen to calculate, or, in the case of a homework to copy one or two off type calculation problem, marking and feedback in time every day, gradually improve the students39。9247。心算好,腦子里能盤(pán)算的問(wèn)題就多,隨時(shí)隨地都能想問(wèn)題。最后教師對(duì)口算方法給予解釋和強(qiáng)調(diào)。它是一個(gè)日積月累的過(guò)程,只有教師和學(xué)生的共同努力才有可能見(jiàn)到成效。學(xué)生計(jì)算水平的提高不可能一簇而就,因此加強(qiáng)平時(shí)的訓(xùn)練是十分有必要的。數(shù)學(xué)教學(xué)應(yīng)當(dāng)培養(yǎng)學(xué)生作業(yè)認(rèn)真、仔細(xì),書(shū)寫(xiě)整潔、格式符合規(guī)定,對(duì)計(jì)算結(jié)果自覺(jué)檢查等學(xué)習(xí)習(xí)慣。學(xué)生在計(jì)算中常會(huì)出現(xiàn)這樣一些錯(cuò)誤:看錯(cuò)抄錯(cuò)題目;列豎式時(shí)數(shù)位沒(méi)對(duì)齊;計(jì)算時(shí)不打草稿;一位數(shù)加、減、乘、除計(jì)算錯(cuò)誤導(dǎo)致整題錯(cuò);做作業(yè)時(shí)思想不集中;做完題不回頭檢查等?!翱谒恪笔且粋€(gè)人最基本的計(jì)算能力,也是一種最生活化的基本技能。練習(xí)是學(xué)生理解和掌握運(yùn)算法則的有效途徑。在小學(xué)階段,學(xué)生學(xué)到的三類(lèi)數(shù)——整數(shù)(自然數(shù))、小數(shù)和分?jǐn)?shù)。所以,一節(jié)計(jì)算課決不僅僅只停留于計(jì)算能力。因此,每位同學(xué)都要打好口算基礎(chǔ),加強(qiáng)口算訓(xùn)練,提高口算能力。只有口算能力強(qiáng),才能加快筆算速度,提高計(jì)算的正確率。比如三位數(shù)乘兩位數(shù)的教學(xué)中,102*24,從回顧兩位數(shù)乘兩位數(shù)的算理過(guò)渡到三位數(shù)乘兩位數(shù),大部分學(xué)生都能很快的把102*24計(jì)算出來(lái),并且學(xué)生在列豎式的時(shí)候習(xí)慣性的把102寫(xiě)在上面,把24寫(xiě)在102的下面,從表面看來(lái),學(xué)生好像都會(huì)了,但如果老師對(duì)計(jì)算過(guò)程不多加解釋?zhuān)蝗话?4寫(xiě)在上面,把102寫(xiě)在24的下面讓學(xué)生們列豎式計(jì)算,學(xué)生就開(kāi)始出錯(cuò)了,學(xué)生并沒(méi)有真正理解其中的計(jì)算道理。第二篇:怎樣提高小學(xué)生數(shù)學(xué)計(jì)算能力怎樣提高小學(xué)生的數(shù)學(xué)計(jì)算能力古城小學(xué)余軍強(qiáng)作為小學(xué)數(shù)學(xué)教師,如何落實(shí)新課標(biāo)理念,完成“為學(xué)生今后的生存、學(xué)習(xí)與發(fā)展奠定良好的基礎(chǔ)”的任務(wù)呢?下面,就數(shù)學(xué)課中數(shù)感的培養(yǎng)談一談我在實(shí)際教學(xué)中的幾點(diǎn)體會(huì):一、使學(xué)生熟練掌握運(yùn)算法則。多加練習(xí)。加強(qiáng)口算能力的培養(yǎng)。三、培養(yǎng)學(xué)生計(jì)算細(xì)心、認(rèn)真的好習(xí)慣。教育學(xué)生養(yǎng)成驗(yàn)算習(xí)慣。知識(shí)靠日積月累,練習(xí)需少食多餐。俗話(huà)說(shuō),要想練就一身過(guò)硬的本領(lǐng),就必須得拳不離手,曲不離口,口算能力的培養(yǎng)也是如此。再讓學(xué)生說(shuō)說(shuō)自己的口算方法,對(duì)良好的口算方法及時(shí)給予肯定,有時(shí)對(duì)同一題目,還可問(wèn)問(wèn)學(xué)生有無(wú)別的口算方法。 calculation ability is an important task in the primary school mathematics teaching, is the important foundation of students to learn , life, life is inseparable from 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。18=360247。在教學(xué)中,我每天在課堂上利用35
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