你们能不能添上一个条件使分法是唯一的呢/实际上这个问法对这些孩子来说还是跳跃性太大，致使他们再次陷入
ni men neng bu neng tian shang yi ge tiao jian shi fen fa shi wei yi de ne / shi ji shang zhe ge wen fa dui zhe xie hai zi lai shuo hai shi tiao yue xing tai da zhi shi ta men zai ci xian ru
的学问，不允许教师含糊其辞，不允许让学生猜你要表达什么意思，如：我在第一个问题解决了以后，问孩子们:
de xue wen bu yun hu jiao shi han hu qi ci bu yun hu rang xue sheng cai ni yao biao da shen me yi si ru wo zai di yi ge wen ti jie jue le yi hou wen hai zi men :
巡视的过程中发现了这种微妙的变化我很高兴。缺点是：引导方向不够明确，浪费了学生的时间。数学是一门精确
xun shi de guo cheng zhong fa xian le zhe zhong wei miao de bian hua wo hen gao xing que dian shi yin dao fang xiang bu gou ming que lang fei le xue sheng de shi jian shu xue shi yi men jing que
子肯定会喜欢上讨论交流这种形式的，通过这节课教学使他们已经完成了一个从羞于讨论到开始讨论的过程。我在
zi ken ding hui xi huan shang tao lun jiao liu zhe zhong xing shi de tong guo zhe jie ke jiao xue shi ta men yi jing wan cheng le yi ge cong xiu yu tao lun dao kai shi tao lun de guo cheng wo zai
用的情况下，仍然坚持让学生继续展开讨论，上黑板展示自己的劳动成果，并且我认为，通过这节课的训练这些孩
yong de qing kuang xia reng ran jian chi rang xue sheng ji xu zhan kai tao lun shang hei ban zhan shi zi ji de lao dong cheng guo bing qie wo ren wei tong guo zhe jie ke de xun lian zhe xie hai
办法寻求解题思路，引导他们通过对比的方法发现二元一次方程组和一元一次方程之间的联系，在考虑到时间不够
ban fa xun qiu jie ti si lu yin dao ta men tong guo dui bi de fang fa fa xian er yuan yi ci fang cheng zu he yi yuan yi ci fang cheng zhi jian de lian xi zai kao lv dao shi jian bu gou
受阻，我请一名同学解释了他的解题过程，又加以适当引导和鼓励，使讨论达到高潮。优点是能鼓励学生用实验的
shou zu wo qing yi ming tong xue jie shi le ta de jie ti guo cheng you jia yi shi dang yin dao he gu li shi tao lun da dao gao chao you dian shi neng gu li xue sheng yong shi yan de
学生实际，今后应注意开讲很重要但要注意所选问题的难易程度。二突破难点仍然新婚贺词采用讨论法，期间部分学生思维
xue sheng shi ji jin hou ying zhu yi kai jiang hen zhong yao dan yao zhu yi suo xuan wen ti de nan yi cheng du er tu po nan dian reng ran xin hun he ci cai yong tao lun fa qi jian bu fen xue sheng si wei
孩的困惑在那里，然后给与合理提示，使他们继续讨论得出答案。缺点：备学生不充分，以致引题较难，脱离育才
hai de kun huo zai na li ran hou gei yu he li ti shi shi ta men ji xu tao lun de chu da an que dian bei xue sheng bu chong fen yi zhi yin ti jiao nan tuo li yu cai
提出问题后，学生受定向思新婚贺词维影响，认为答案是唯一的，这种情况下我用提问的方式激发学生思考，如我问一个男
ti chu wen ti hou xue sheng shou ding xiang si xin hun he ci wei ying xiang ren wei da an shi wei yi de zhe zhong qing kuang xia wo yong ti wen de fang shi ji fa xue sheng si kao ru wo wen yi ge nan
赘述。下面我按照教学环节把我这节课分析一下；一采用刘三姐对歌引入，切近生活，激发兴趣，引起学生注意。
zhui shu xia mian wo an zhao jiao xue huan jie ba wo zhe jie ke fen xi yi xia yi cai yong liu san jie dui ge yin ru qie jin sheng huo ji fa xing qu yin qi xue sheng zhu yi
度两个方向分析问题。引导学生在课堂活动中感悟知识的生成、发展与变化过程我的课领导们已经听了过程就不再
du liang ge fang xiang fen xi wen ti yin dao xue sheng zai ke tang huo dong zhong gan wu zhi shi de sheng cheng fa zhan yu bian hua guo cheng wo de ke ling dao men yi jing ting le guo cheng jiu bu zai
理分析能力的过程。新婚贺词在平时的教学中我一直比较注重发散思维的训练，和逆向思维的训练，注重引导学生从多个角
li fen xi neng li de guo cheng xin hun he ci zai ping shi de jiao xue zhong wo yi zhi bi jiao zhu zhong fa san si wei de xun lian he ni xiang si wei de xun lian zhu zhong yin dao xue sheng cong duo ge jiao
个完整的体系。我对自己的设计思路比较满意，因为我一直以为学数学就是领悟数学思想方法，训练思维，提高推
ge wan zheng de ti xi wo dui zi ji de she ji si lu bi jiao man yi yin wei wo yi zhi yi wei xue shu xue jiu shi ling wu shu xue si xiang fang fa xun lian si wei ti gao tui
化思想。第三个过程是解方程组训练消元法的应用。目的让学生进新婚贺词一步熟炼消元这种数学方法，同时使知识形成一
hua si xiang di san ge guo cheng shi jie fang cheng zu xun lian xiao yuan fa de ying yong mu de rang xue sheng jin xin hun he ci yi bu shu lian xiao yuan zhe zhong shu xue fang fa tong shi shi zhi shi xing cheng yi
即需要两个条件才能得出唯一答案。再者通过对一个问题实施两种列法，一种解法，也体现了二元与一元之间的转
ji xu yao liang ge tiao jian cai neng de chu wei yi da an zai zhe tong guo dui yi ge wen ti shi shi liang zhong lie fa yi zhong jie fa ye ti xian le er yuan yu yi yuan zhi jian de zhuan
过过程探索加深学生对二元一次方程组的解的理解，即它是两个方程的公共解，同新婚贺词时与列一元一次方程形成对比，
guo guo cheng tan suo jia shen xue sheng dui er yuan yi ci fang cheng zu de jie de li jie ji ta shi liang ge fang cheng de gong gong jie tong xin hun he ci shi yu lie yi yuan yi ci fang cheng xing cheng dui bi
这两个未知数的关系的条件，然后才能列出二元一次方程组解出唯一答案。这个环节是难点。这样设计的目的是通
zhe liang ge wei zhi shu de guan xi de tiao jian ran hou cai neng lie chu er yuan yi ci fang cheng zu jie chu wei yi da an zhe ge huan jie shi nan dian zhe yang she ji de mu de shi tong
解决实际问题，但答案不唯一。二、探索要使一的问题答案是唯一的，那么在新婚贺词刚才的基础上应该再添加一个，关于
jie jue shi ji wen ti dan da an bu wei yi er tan suo yao shi yi de wen ti da an shi wei yi de na me zai xin hun he ci gang cai de ji chu shang ying gai zai tian jia yi ge guan yu
二元一次方程组及应用说课稿一一、教学过程及反思我的教学过程可分为三个环节一、探索只用二元一次方程也能
er yuan yi ci fang cheng zu ji ying yong shuo ke gao yi yi jiao xue guo cheng ji fan si wo de jiao xue guo cheng ke fen wei san ge huan jie yi tan suo zhi yong er yuan yi ci fang cheng ye neng