让可能性教学变得“一切皆有可能”

在小学阶段设置简单的"概率"内容,主要是为了培养学生的随机思维,让学生学会用概率的眼光去观察大千世界,而不仅仅是以确定的、一成不变的思维方式去理解事物。二、三年级要求学生会用语言描述事件发生的可能性并能列出简单事件出现的结果,四年级让学生理解等可能性,五年级会用分数表示可能性的大小。概率教学重点是让学生理解不确定现象,理解"大数定律"。     

“可能性的大小”教学设计

教学内容：义务教育课程标准实验教科书数学五年级上册第101～102页例2。 教学目标： 1．知识与技能：（1）使学生进一步加深对“等可能性事件”的认识；（2）通过击鼓传花的游戏活动，使学生学会用几分之几来描述一个事件发生的概率；（3）加深学生对游戏规则公平性的认识和理解；（4）能对简单事件发生的可能性做出预测。     

概率初步教学探讨

1 教材分析 “概率初步”属于“统计与概率”领域，主要内容是随机事件的定义、概率的意义、利用列举法求简单事件的概率、利用频率估计概率等．通过本章的教学主要培养学生随机观念和概率思想，在教学中重点落实列举法求等可能事件的概率，教学难点是学生对随机事件和概率意义的理解，而中考试题中重点考察随机事件和等可能事件概率的计算问题．     

《可能性》教学设计与评析

教学内容:人教版<义务教育课程标准实验教科书·数学>五年级上册99页例1及做一做,练习二十第1～3题. 教材分析:三年级上册,学生已经初步体验了有些事件的发生是确定的,有些则是不确定的.本课时的内容是在三年级上册的基础上的深化,使学生对"可能性"的认识和理解逐渐从定性向定量过渡,不但能用恰当的语言(如"一定～不可能""可能""经常""偶尔"等)来表述事件发生的可能性大小,还要学会通过量化的方式,用分数来描述事件发生的概率.     

数学新教材“概率”部分学法的几点建议

概率论是一门研究现实世界中广泛存在的随机现象的规律性的数学分支，概率部分的核心问题是让学生了解随机现象与概率的意义，使学生初步学会描述和分析某些随机现象的方法，理解和掌握古典概型常见的四种类型：等可能事件、互斥事件、相互独立事件同时发生、独立重复事件，并能用所学知识识别类型，解决一些简单的实际问题，体会概率模型的作用，以及运用概率思想思考问题的特点，下面提出一些学法建议：     

一定摸到红球吗?——教学设计案例一则

“一定摸到红球吗”足对学生概率观念形成的一种启蒙，为八年级的概率做铺垫．现实生活中存在着大量的不确定事件，而概率正是研究不确定事件的一门学科．“一定摸到红球吗”首先以学生喜闻乐见的摸球游戏为背景，通过试验和分析，使学生体验有些事件的     

基于SOLO分类理论的试题评析与教学启示——以“2022年广东省中考物理试题”为例

SOLO即“可观察的学习成果”,SOLO分类理论将学生回答问题时所表现出来的思维结构由低到高划分为5个层次：前结构、单点结构、多点结构、关联结构、抽象扩展结构.在《义务教育物理课程标准(2022年版)》的引领下，基于SOLO分类理论，对2022年广东省中考试题进行评析，分析统计试题中体现SOLO层次结构的比重，并提出教学启示.     

物理难点概念有效教学策略——以“比热容”为例

一、SOLO理论简介SOLO分类理论认为,人的认知不仅在总体上具有阶段性,在解决某个具体问题时也具有阶段性,对问题的反应水平分为以下五个不同的层次。1前结构水平。反应特征表现为学生对问题基本上不具备相关知识或被前概念困扰,思维混乱。2单点结构水平。反应特征表现为学生对问题有一点理解,对问题的理解趋于表面和肤浅。3多点结构水平。     

关于“可能性”教学的思考

<正>"可能性"属于数学课程内容中"统计与概率"这部分的内容,"统计与概率"提供的是一种不确定的思维方式,即随机思想。由于受生活经验和思维水平的限制,学生对随机现象中蕴含的规律,特别是对随机事件发生的可能性进行定量刻画,理解起来有一定的困难。苏教版新版教材在进行编排时将老教材分布在四个年级教学的"可能性"内容整合在四年级上册一个单元中,教材安排了两个例题,例1主要教学简单的随机现象,例2列出简单随机现象可能发生的所有结果,体     

高考数学热点之概率

概率统计是近年高考的热点,注重对四个基本公式的考查,以大题呈现的形式居多,其试题与教材及学生现实生惹实际紧密联系,题目往往立意高、情境新、设问巧．近三年来大致出现过三种类型：一是课本中出现加以概括的;二是与横向学科联系的;三是赋予时代气息的．在教学中,应充分研究大纲、考纲,使学生做到：（1）五个了解,即了解随机事件的统计规律性;随机事件的概率;等可能事件的概率;互斥事件的概率;相互独立事件的概率．（2）五个会,即会用排列组合基本公式计算等可能事件的概率;会用互斥事件的概率加法公式计算事件的概率;     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.