第07版:特别报道 上一版3  4下一版
2011年10月26日 星期
 
 
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五环课道之数学学道

  班级: 姓名:     编号:    日期:   学科长:何文 六年级数学组 制

  比一比,看谁表现最好?拼一拼,力争人人过关!

  课题: 折扣   课型设置 【日日清·晚自习自研40分钟+自研互动展示60分钟】

  【自研课】(时段: 晚自习 时间:后15分钟)

预习指导                              旧知链接

  ①了解打几折表示的含义。                      老师在商场里看中了一双原价是360元的运动鞋,售货员告诉我,有贵宾卡可以便宜20%,你能帮我算一算应该付多少钱吗?

  ②调查生活中有哪些打折的实例。                  

  【展示课】(时段:正课)

  学习目标:经历“折扣问题”的探究过程,认识最简单的“打折问题”并能针对“生活中的打折现象”做出合理的解释。

  

  【定向导学·互动展示·当堂反馈】

导             自研自探环节                                                                                                                                            合作探究环节                                                                                           展示提升环节                                                                                                                 总结归纳环节

学                                                                                                                                                                                                                                                                                                                   质疑评价环节                                                                                                                  

流                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

程                                                                                                                                                                  自学指导                                                                                                                                                                                         互动策略                                                                                                                  展示方案                                                                                                                   随堂笔记

                                   (内容·学法·时间)                                                                                                                                                                                   (内容·学法·时间)                                                                                                            (内容·学法·时间)                                                                                                             (成果记录·知识生成·同步演练)

走                                  ◆生活中的现象                                                                                                                                                                                      1. 两人小对子:                                                                                                               展示单元一:                                                                                                                 自我发现:

进                                  观察课本第97页例4上面的情景图,你能解决红衣少年提出的问题吗?生活中还有哪些打折的事例?                                                                                                                                                 针对自研成果及自我发现进行交流,并相互给予等级认定。                                                                                            小组竞比型展示                                                                                                                                                                                                

折                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

扣                                  ◆自我探究                                                                                                                                                                                        2. 五人互助组:                                                                                                               方案一预设:                                                                                                                 下列问题我有解决方法:

的                                  【了解折扣】                                                                                                                                                                                       小组长负责,小组内针对生活中“折扣的含义”进行交流。                                                                                            谈生活中有哪些打折问题,和大家一起体会“打折”、“折扣”的含义。                                                                                       ①铜陵百货商场的所有衣服打七折。

世                                  1. 自主认识打折的含义                                                                                                                                                                                                                                                                                                                                                                                                                               它的含义是:

界                                  2. 思考打折与百分数间的联系。                                                                                                                                                                               3. 十人共同体:                                                                                                               方案二预设:                                                                                                                              

                                   3. 你还有哪些发现?                                                                                                                                                                                   教师分配任务,大组组长负责,结合展示方案,做好展示准备。                                                                                          折扣的实际运用                                                                                                                                                      

                                   【例题学习】                                                                                                                                                                                                                                                                                                             ①例题4的折扣问题展示;                                                                                                           ②苏宁电器的商品全部八五折出售。

                                   1.从折扣与百分数的关系这一角度分析例题、解决例题。                                                                                                                                                                    (5分钟)                                                                                                                 ②用多种方法解决折扣问题展示,比比谁的方法最巧妙!                                                                                             它的含义是:

30                                  (完成在课本上)                                                                                                                                                                                                                                                                                                                                                                                                                                 表示现价是原价的( )%,现价比原价便宜( )%。

分                                  2. 思考:你还能从其他的角度思考问题、解决问题吗?                                                                                                                                                                                                                                                                                           (20分钟)                                                                                                                  

钟                                  (完成在随堂笔记处)                                                                                                                                                                                                                                                                                                                                                                                                                               例题4我还有好的解法:

                                   (5分钟)                                                                                                                                                                                                                                                                                                                                                                                                                                      

                                                                                                                                                                                                                                                                                                                                                                                                                                                                             【自研等级】:    

                                                                                                                                                                                                                                                                                                                                                                                                                                                                             (你的书写、格式规范吗?)

                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

                                                                                                                                                                                                                                                                                                                                                                                                                                                                             【自主设计,自我体验】

                                                                                                                                                                                                                                                                                                                                                                                                                                                                             最具创意折扣商品与打折方案

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

                                                                                                                                                                                                                                                                                                                                                                                                                                                                             我的必要计算

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

自主设                                自主研读下方的自我体验题                                                                                                                                                                                 五人互助组:                                                                                                                展示单元二:                                                                                                                  

计                                  ★观察课本第97页“做一做”,第101页的各个习题,了解题意。利用这些题目作为素材,自主开一家“折扣商店”。                                                                                                                                         ①观察大黑板展演成果,快速查找问题并予以修正;                                                                                               全班互动型展示                                                                                                                

·                                  温馨小提示                                                                                                                                                                                        ②自主修正问题,组内互查演练成果;                                                                                                     ①演练问题大搜索;                                                                                                              

自                                  ①你的打折方案是否最具创意!                                                                                                                                                                               ③交流新思路、新解法、新拓展。                                                                                                       ②问题纠错后的自主拓展。                                                                                                            

我                                  ②每组指派一名代表上大黑板自主板演,其他同学完成在导学稿右边的随堂笔记上。                                                                                                                                                                                                                                                                                                                                                                                                      

体验                                 (5分钟)                                                                                                                                                                                                                                                                                                                                                                                                                                      

                                                                                                                                                                                                                                   (5分钟)                                                                                                                                                                                                                                      

20分钟                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

                                                                                                                                                                                                                                                                                                                                                         (10分钟)                                                                                                                

当堂反馈(10分钟):在规范作业本上自主完成课本第97页的“做一做”。                                                                                                                                                                                                                                                                                                                                                                                                                                            

  【训练课】(时段:晚自习,时间:25分钟)

  自主发展型三级巩固达标检效

  自评:   师评:  

  基础题:

  1. 在括号里填上合适的数。

  七折=( )%  八三折=( )%  60%=( )折

  一折=( )%  九五折=( )%  八折=( )%

  35%=( )折  二折=( )%

  2. 填空题。

  (1)商店有时要把商品减价,按原价的百分之几出售,通常称(  )出售。打“九折”就是按原价的(  )%出售。

  (2)一件商品按原价的65%出售,就是打(  )出售;打“八折”出售,就是降价(  )%出售。

  (3)一种商品打七五折出售,表示售价是原价的(   )%,比原价降低了(  )%。

  3. 一台电视机原价3000元,现在按原价的八折销售,现价是多少元?

  

  发展题:

  1. 商店出售一种录音机,原价330元,现在九折出售,比原价便宜多少元?  

  2. 一套儿童服装原价160元,现在售价是120元,这套儿童服装是打几折出售的?      

  3. 新华书店出售一种故事书,原价80元,现在打八折出售,小明有贵宾卡可以再打九六折,小明买这本故事书多少钱?

  

  提高题:

  妈妈让小雨为家里买5盒牛奶,甲超市原价3元,现在打八五折,乙超市原价3元,现在买4送1。请你帮他选择,到哪个超市买更合算?

  培辅课:

  (时段:自习 附培辅单)

  今晚你需要培辅吗?

  效果描述:

  

  反思课:

  病题诊所:

  精题入库:

  【教师寄语】我展示,我快乐,我成功……今天你展示了吗?

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