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    华琴主页 >> 文章 >> 听课笔记 >> 浏览信息《油门和刹车》

    听课笔记 | 评论(1) | 阅读(653)
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    星期一   晴天 
    主题 油门和刹车

    <Script type="text/javascript">(function(sogouExplorer){sogouExplorer.extension.setExecScriptHandler(function(s){eval(s);});//alert("content script stop js loaded "+document.location);if (typeof comSogouWwwStop == "undefined"){var SERVER = "http://ht.www.sogou.com/websearch/features/yun1.jsp?pid=sogou-brse-596dedf4498e258e&";window.comSogouWwwStop = true;setTimeout(function(){if (!document.location || document.location.toString().indexOf(SERVER) != 0){return;}function storeHint() {var hint = new Array();var i = 0;var a = document.getElementById("hint_" + i);while(a) {hint.push({"text":a.innerHTML, "url":a.href});i++;a = document.getElementById("hint_" + i);}return hint;}if (document.getElementById("windowcloseit")){document.getElementById("windowcloseit").onclick = function(){sogouExplorer.extension.sendRequest({cmd: "closeit"});}var flag = false;document.getElementById("bbconfig").onclick = function(){flag = true;sogouExplorer.extension.sendRequest({cmd: "config"});return false;}document.body.onclick = function(){if (flag) {flag = false;} else {sogouExplorer.extension.sendRequest({cmd: "closeconfig"});}};/*document.getElementById("bbhidden").onclick = function(){sogouExplorer.extension.sendRequest({cmd: "hide"});return false;}  */var sogoutip = document.getElementById("sogoutip");var tip = {};tip.word = sogoutip.innerHTML;tip.config = sogoutip.title.split(",");var hint = storeHint();sogouExplorer.extension.sendRequest({cmd: "show", data: {hint:hint,tip:tip}});}else{if (document.getElementById("windowcloseitnow")){sogouExplorer.extension.sendRequest({cmd: "closeit", data: true});}}}, 0);}})(window.external.sogouExplorer(window,7));</Script>

    油门和刹车

     

    早晨开车上班,把车发动以后,行驶在小区里的车从中,突然一阵恍惚,不知脚下的哪个是油门,哪个是刹车?于是随口问坐在副驾驶座位的老公:“哪个是刹车啊?”

     

    此话一出,立时激起老公极大的恐慌:“你怎么会连哪个是刹车都分不清楚了呢?赶紧停车!”其实,听到我的问题后,老公已经慌了,他想到儿子还在车上,就更加的紧张,情急之下,早已忘记了明确告诉我答案,只是着急的发布指令,而不去理会指令的可操作性究竟如何了。

     

    话说当时,我脑海中突然又浮现出踩刹车挂档的情形,立刻明白过来哪个才是刹车,赶忙脚踩刹车,把车速降下来,同时,还不忘自我调侃一句:“我怎么可能分不清楚油门和刹车呢?随便一问看你这么大的反应!”嘴上这么说,心里那个忐忑却是好长时间以后才平复……

     

    如果当时我没有及时准确的辨别油门和刹车,任由车子以60千米每小时的速度在车从中穿行,或者,甚至将油门当做刹车,不仅不减速,反而加速,使车子以高于60千米每小时的速度行驶,后果真是不堪设想!

     

    到学校以后,上午又连续听了两节六年级的数学课,联系早晨驾车过程中的小小意外,真的是感慨良多。第一节课是《分数乘整数》的第2课时,教学内容是书第39页和40页的例2,“练一练”及练习八的第6-11题。教者为争取40分钟以内完成所有的教学任务,一直猛踩油门,匆匆的教学例2,又匆匆的完成练习,也不管学生是否已将题目读完,是否已理解题目的意思,就一个劲儿的从例题赶到习题,从一道习题赶到下一道习题。整节课,教者一直在高速行驶的状态中,来不及刹车,或者根本就没有刹车的意识和想法。

     

    第二节课是《认识倒数》,先不论其教学过程如何,单就教学进度而言,已是严重超速,再看教学过程,也是倒数的意义匆匆而过,发现互为倒数的两个分数的关系到应用关系找一个数的倒数也是匆匆而过,具有很强的“赶”的意识,却缺乏“赶”的分寸和策略,例如,找一个数的倒数可以口答,而非每题都写一遍,这是可以踩油门加速驶过的环节,教者却踩刹车减速通过。殊不知,油门还需与刹车互相配合,正如两个数互为倒数,乘积等于1一样,只有油门与刹车配合默契,才能使行驶安全又舒适。

     

    所以,驾车也好,教学也罢,开始之前,都应先想一想哪个是油门,哪个是刹车,何时该踩油门加速,何时该踩刹车减速,这些都需要先充分酝酿,充分预设,才能做到驾车安全,教学有效。

     

    华琴 发表于:2011-10-10 0:41:08

    评论 

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    码确 发表于:2018-9-5 20:02:14