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background="../../images/bj-1.jpg"> <TABLE border="0" cellspacing="0" cellpadding="0" width="999" align="center"> <TBODY> <TR> <TD height="31" valign="top" background="../../images/index2_01.jpg" align="center"> <TABLE border="0" cellspacing="0" cellpadding="0" width="980"> <TBODY> <TR> <TD height="28" width="492" align="left"><!--#begineditable name="文本日历" clone="0" namechanged="0" order="0" ispublic="0" tagname="文本日历" viewid="1731" contype="" stylesysid="" layout="" action=""--><script> var cl_1731CalendarData=new Array(20); var cl_1731madd=new Array(12); var cl_1731TheDate=new Date(); var cl_1731tgString="甲乙丙丁戊己庚辛壬癸"; var cl_1731dzString="子丑寅卯辰巳午未申酉戌亥"; var cl_1731numString="一二三四五六七八九å?; var cl_1731monString="正二三四五六七八九十冬腊"; var cl_1731weekString="日一二三四五å…?; var cl_1731cYear; var cl_1731cMonth; var cl_1731cDay; var cl_1731cHour; var cl_1731cDateString; var cl_1731DateString; var Browser=navigator.appName; function cl_1731init() { cl_1731CalendarData[0]=0x41A95; cl_1731CalendarData[1]=0xD4A; cl_1731CalendarData[2]=0xDA5; cl_1731CalendarData[3]=0x20B55; cl_1731CalendarData[4]=0x56A; cl_1731CalendarData[5]=0x7155B; cl_1731CalendarData[6]=0x25D; cl_1731CalendarData[7]=0x92D; cl_1731CalendarData[8]=0x5192B; cl_1731CalendarData[9]=0xA95; cl_1731CalendarData[10]=0xB4A; cl_1731CalendarData[11]=0x416AA; cl_1731CalendarData[12]=0xAD5; cl_1731CalendarData[13]=0x90AB5; cl_1731CalendarData[14]=0x4BA; cl_1731CalendarData[15]=0xA5B; cl_1731CalendarData[16]=0x60A57; cl_1731CalendarData[17]=0x52B; cl_1731CalendarData[18]=0xA93; cl_1731CalendarData[19]=0x40E95; cl_1731madd[0]=0; cl_1731madd[1]=31; cl_1731madd[2]=59; cl_1731madd[3]=90; cl_1731madd[4]=120; cl_1731madd[5]=151; cl_1731madd[6]=181; cl_1731madd[7]=212; cl_1731madd[8]=243; cl_1731madd[9]=273; cl_1731madd[10]=304; cl_1731madd[11]=334; } function cl_1731GetBit(m,n) { return (m>>n)&1; } function cl_1731e2c() { var total,m,n,k; var isEnd=false; var tmp=cl_1731TheDate.getYear(); if (tmp<1900) tmp+=1900; total=(tmp-2001)*365 +Math.floor((tmp-2001)/4) +cl_1731madd[cl_1731TheDate.getMonth()] +cl_1731TheDate.getDate() -23; if (cl_1731TheDate.getYear()%4==0&&cl_1731TheDate.getMonth()>1) total++; for(m=0;;m++) { k=(cl_1731CalendarData[m]<0xfff)?11:12; for(n=k;n>=0;n--) { if(total<=29+cl_1731GetBit(cl_1731CalendarData[m],n)) { isEnd=true; break; } total=total-29-cl_1731GetBit(cl_1731CalendarData[m],n); } if(isEnd)break; } cl_1731cYear=2001 + m; cl_1731cMonth=k-n+1; cl_1731cDay=total; if(k==12) { if(cl_1731cMonth==Math.floor(cl_1731CalendarData[m]/0x10000)+1) cl_1731cMonth=1-cl_1731cMonth; if(cl_1731cMonth>Math.floor(cl_1731CalendarData[m]/0x10000)+1) cl_1731cMonth--; } cl_1731cHour=Math.floor((cl_1731TheDate.getHours()+3)/2); } function cl_1731GetcDateString() { var tmp=""; tmp+=cl_1731tgString.charAt((cl_1731cYear-4)%10); //å¹´å¹² tmp+=cl_1731dzString.charAt((cl_1731cYear-4)%12); //年支 tmp+="å¹?; if(cl_1731cMonth<1) { tmp+="é—?; tmp+=cl_1731monString.charAt(-cl_1731cMonth-1); } else tmp+=cl_1731monString.charAt(cl_1731cMonth-1); tmp+="æœ?; tmp+=(cl_1731cDay<11)?"åˆ?:((cl_1731cDay<20)?"å?:((cl_1731cDay<30)?"å»?:"å?)); if(cl_1731cDay%10!=0||cl_1731cDay==10) tmp+=cl_1731numString.charAt((cl_1731cDay-1)%10); cl_1731cDateString=tmp; return tmp; } function cl_1731GetDateString() { var tmp=""; var t1=cl_1731TheDate.getYear(); if (t1<1900)t1+=1900; tmp+=t1 +"å¹? +(cl_1731TheDate.getMonth()+1)+"æœ? +cl_1731TheDate.getDate()+"æ—?nbsp;" +" 星期"+cl_1731weekString.charAt(cl_1731TheDate.getDay()); cl_1731DateString=tmp; return tmp; } function cl_1731SolarTerm(DateGL){ var SolarTermStr=new Array( "小寒","大寒","立春","雨水","惊蛰","春分", "清明","谷雨","立夏","小满","芒种","夏至", "小暑","大暑","立秋","处暑","白露","秋分", "寒露","霜降","立冬","小雪","大雪","冬至"); var DifferenceInMonth=new Array( 1272060,1275495,1281180,1289445,1299225,1310355, 1321560,1333035,1342770,1350855,1356420,1359045, 1358580,1355055,1348695,1340040,1329630,1318455, 1306935,1297380,1286865,1277730,1274550,1271556); var DifferenceInYear=31556926; var BeginTime=new Date(1901/1/1); BeginTime.setTime(947120460000); for(;DateGL.getFullYear()<BeginTime.getFullYear();){ BeginTime.setTime(BeginTime.getTime()-DifferenceInYear*1000); } for(;DateGL.getFullYear()>BeginTime.getFullYear();){ BeginTime.setTime(BeginTime.getTime()+DifferenceInYear*1000); } for(var M=0;DateGL.getMonth()>BeginTime.getMonth();M++){ BeginTime.setTime(BeginTime.getTime()+DifferenceInMonth[M]*1000); } if(DateGL.getDate()>BeginTime.getDate()){ BeginTime.setTime(BeginTime.getTime()+DifferenceInMonth[M]*1000); M++; } if(DateGL.getDate()>BeginTime.getDate()){ BeginTime.setTime(BeginTime.getTime()+DifferenceInMonth[M]*1000); M==23?M=0:M++; } var JQ=""; if(DateGL.getDate()==BeginTime.getDate()){ JQ+="今日<"+SolarTermStr[M]+">"; } else if(DateGL.getDate()==BeginTime.getDate()-1){ JQ+="明日<"+SolarTermStr[M]+">"; } else if(DateGL.getDate()==BeginTime.getDate()-2){ JQ+="后日<"+SolarTermStr[M]+">"; } else{ JQ=""; if(DateGL.getMonth()==BeginTime.getMonth()){ JQ+="本月"; } else{ JQ+="下月"; } JQ+=BeginTime.getDate()+"æ—?"+SolarTermStr[M]+">"; } return "  "+JQ; } cl_1731init(); cl_1731e2c(); cl_1731GetDateString(); cl_1731GetcDateString(); document.write('<div id="lunar1731" class="fontstyle1731" >'); document.write(cl_1731DateString+"  "+cl_1731cDateString + cl_1731SolarTerm(new Date()) +"</div>"); </script> <!--#endeditable--></TD> <TD width="337"> </TD> <TD width="151" align="left"><!--#begineditable name="主页|收藏" clone="0" namechanged="0" order="1" ispublic="0" tagname="主页|收藏" viewid="1732" contype="" stylesysid="" layout="" action=""--><script language="javascript"> function dosuba1732a() { try{ var ua = navigator.userAgent.toLowerCase(); if(ua.indexOf("msie 8")>-1) { window.external.AddToFavoritesBar(document.location.href,document.title,"");//IE8 }else{ if (document.all) { window.external.addFavorite(document.location.href, document.title); }else if(window.sidebar) { window.sidebar.addPanel( document.title, document.location.href, "");//firefox } } } catch 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</style> <form name="form1750a"> <table border="0" class="winstyle1750" width="100%" cellspacing="0" cellpadding="0"> <tr><td class="titlestyle1750" align="center"> 李圣æ?八年级数学教学感æ‚? </td></tr> <tr height="30"><td align="center"> <span class="timestyle1750"> 2018-06-22 18:46</span> <span class="authorstyle1750"> </span> <script language="javascript" src="/lhjs/system/resource/js/prototype.js"></script><script language="javascript" src="/lhjs/system/resource/js/ajax.js"></script><span>  (浏览次数<span id="n8484"></span>)</span><script language="javascript">getClickTimes('8484','966636431','wbnews','')</script> </td></tr> <tr><td align="right"> <span> </span> </td></tr> <tr><td class="contentstyle1750"> <div class="c1750_content"><div id="vsb_content"> <style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1;} @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:微软雅黑; panose-1:2 11 5 3 2 2 4 2 2 4;} @font-face {font-family:"\@微软雅黑"; panose-1:2 11 5 3 2 2 4 2 2 4;} @font-face {font-family:"\@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; font-size:10.5pt; font-family:"Calibri","sans-serif";} p {margin-right:0cm; margin-left:0cm; font-size:12.0pt; font-family:"Calibri","sans-serif";} @page WordSection1 {size:595.3pt 841.9pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; layout-grid:15.6pt;} div.WordSection1 {page:WordSection1;} --> </style> <div class="WordSection1" style="layout-grid: 15.6pt none"> <p class="MsoNormal" style="line-height: 150%;text-indent: 24pt"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">是一学期要过去了,反思八年级数学的教学,我觉得教师的真正本领,主要不在于讲授知识,而是在于激发学生的学习动机,唤起学生的求知欲望,让学生积极主动的参与到教学过程中来,通过老师的引导,让学生一步步探究,最后获得知识、掌握知识ã€?/span></p> <p class="MsoNormal" style="line-height: 150%;text-indent: 24pt"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">在这八年级的数学教学中,常有这样的困惑:不仅讲了,而且讲了多遍,但是学生就是不会做这类型的题目!当然,出现上述情况的原因涉及到方方面面,但其中数学教学中的例题教学值得反思,数学的例题是知识由产生到应用的关键一步,是引导学生逐渐将旧知和新知关联到一起的重要步骤,然而很多时候例题一个接一个讲,讲完后并没有引导学生进行反思、总结方法,因而学生的知识学习和应用也就只能停留在例题的表面层次,不能得到知识应用的“精髓”,那么,出现上述情况也就不难理解了。“学而不思则罔”,“罔”即迷惑而没有所得,正因为这样,我们也就不难理解例题教学为什么要进行解后反思了。事实上,解后反思是对知识的小结、方法的提炼的过程;是一个吸取教训、逐步提高的过程;也是一个收获期望获得自信的过程。从这个角度上讲,例题教学的解后反思就应成为例题教学的一个重要资料。下面是我对例题教学的一点感å?/span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  一、方法规律总结</span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  题有成千上万道,但例题解后不反思总结就难以到达提高解题潜力、发展思维的目的。我们要善于作解题后的反思、方法的归类、规律的小结和技巧的揣摩,再进一步作一题多变,一题多问,一题多解,挖掘例题的深度和广度,扩大例题的辐射面,无疑对潜力的提高和思维的发展大有益处ã€?/span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  透过例题的层层变式,学生对个知识的认识又深了一步,对各知识间的结构体系更加完善,有利于培养学生从特殊到一般,从具体到抽象地分析问题、解决问题;透过例题解法多变的教学则有利于帮忙学生构成思维定势,而又打破思维定势;有利于培养思维的变通性和灵活性ã€?/span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  二、易错反æ€?/span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  教学过程中,我们需要考虑到学生的知识背景、思维方式,以学生的学情出发,八年级学生的表达方式可能又不准确,这就难免有“易错”。例题教学若能从此切入,进行解后反思,则往往能找到“病根”,进而对症下药,常能收到事半功倍的效果ï¼?/span></p> <p class="MsoNormal" style="line-height: 150%;text-indent: 21pt"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">因为整个的解题过程并非仅仅只是一个知识运用、技能训练的过程,而是一个伴随着交往、创造、追求的综合过程,是学生整个内心世界的参与。其间他既品尝了失败的苦涩,又收获了恍然大悟的喜悦,他可能是独立思考所得,也有可能是透过合作协同解决,既体现了个人努力的价值,又无不折射出群众智慧的光芒。在此处引导学生进行解后反思,有利于培养学生用心的情感体验和学习动机,激励学生的学习兴趣,变被动学习为自主探究学习;还有利于锻炼学生的学习毅力和意志品格ã€?/span></p> <p class="MsoNormal" style="line-height: 150%"><span style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt">  教育家弗赖登塔尔曾指出:反思是数学活动的核心和动力。解后的反思方法、规律得到了及时的小结归纳;解后的反思使我们拨开迷蒙,看清“庐山真面目”而逐渐成长起来;在反思中学会了独立思考,在反思中学会了倾听,学会了交流、合作,学会了分享。总之,通过反思,每个人都会有收获,透过一遍遍反思,又会有新的收获,不断成长ã€?/span></p> <p class="MsoNormal" style="line-height: 150%"><span lang="EN-US" style="line-height: 150%;font-family: '微软雅黑','sans-serif';font-size: 12pt"> </span></p> </div> </div></div> </td></tr> <tr><td class="pagestyle1750" align="left"> </td></tr> <tr><td><div id="div_vote_id"></div></td></tr> <tr><td align="left"><span> </span></td></tr> <tr> <td align="center"> </td> </tr> <tr><td align="right"> <span>ã€?/span><a href="javascript:window.opener=null;window.open('','_self');window.close();"><span>关闭窗口</span></a><span>ã€?/span> </td></tr> </table> </form> <script type="text/javascript"> function dosuba1750a() { try{ var ua = navigator.userAgent.toLowerCase(); if(ua.indexOf("msie 8")>-1) { 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