高考题对“多重表征”教学的需求*--以“化学反应原理题”为例

结合2010-2014年广东高考理综化学反应原理的试题特点,从多重表征的角度来分析其命题方向及其对教学实践的导向,探讨多重表征在高中化学教学中的功能,并提出多重表征的教学建议。     

化学知识表征的特点及类型

化学知识的表征除了具有广义知识表征的一般特征之外,还具有自身的特点,即：化学知识主要以符号进行表征,化学知识中同样存在着表象表征,所有的化学知识都储存于一个知识网络之中。化学知识表征的形式有四种：言语表征、符号表征、表象表征及规则表征。前三者用于说明一些化学事实,并不涉及知识的使用。属于陈述性表征;而规则表征则用于说明化学学习及解决化学问题的过程中应遵循的原理,属于程序性表征。     

理科问题解决中的多重表征模型及其教学价值

从现有研究状况来看,心理学领域的问题解决研究和学科问题解决及其教学研究之间仍然缺乏有机结合.以表征为切入点和突破口,指出了约翰斯顿所提出的表征类型和化学三角形的缺陷;依据表征对象的空间尺度和抽象程度,修正并扩展了表征类型的概念和关系;依据认知的深刻程度建立了多重表征模型;深入阐述了该模型的结构、特征及其教学价值.多重表征模型可以较好地阐释学习的过程并指导教学实践,是构建认知理论和理科学科教学实践之间的桥梁.     

在多元表征中深化概念理解——以苏教版二上《认识线段》一课的教学为例

<正>美国教育心理学家布鲁纳认为:在人类智慧生长期,有三种表征方式在起作用,它们是动作表征、肖像表征和符号表征。这三种表征系统的相互作用,是人类认知生长和智慧生长的核心。三种不同表征代表着思维活动的不同程度。学生获得数学概念往往是以线性方式从动作表征到肖像表征,最后通过抽象思维形成符号表征。在数学概念教学中,常见的问题有:注重动作表征,缺少与数学知识的内在联系,动作表征只停留于操作层面;只掌握概念的肖像表征而未达到符号表征,对概念的理解仅停留于具     

四重表征在高中化学离子反应教学中的应用

本文对四重表征进行介绍,并根据离子反应概念教学中存在的问题,利用四重表征进行离子反应概念的建构,提高学生四重表征能力,突破了离子反应教学的难点。     

时间信息表征方式研究概述

个体如何表征时间信息,是近年来时间研究领域的关注焦点。已有研究表明,个体对客观日历时间采用线性和网络层次的方式进行表征,将来研究应当关注个体对相同语义、不同表述方式的客观时间的表征方式。     

映象表征研究对化学教学的启示

文章简述了映象表征的含义、心理机制等,阐述了依据对映象表征的研究。化学教学应针对不同类型化学知识选择相应的表征方式,以便取得较好的教学效果。     

国外化学三重表征的研究进展及其启示

化学三重表征自提出以来就对全球科学教育,尤其是化学教育的研究产生了广泛而深刻的影响,三重表征也因此被尊为此领域最有力量、最富有成效的思想之一.随着化学教育理论的不断发展,约翰斯顿及其他众多研究者对三重表征进行了多次修改和完善,并出现了多种演绎版本.通过对国外三重表征的来源与发展进行梳理,审视目前三重表征被多重演绎的现状...     

双语词汇表征研究概述

文章主要对双语词汇表征的几个模型以及与各模型相关的一些实证研究进行了简要回顾，提出了双语词汇表征研究仍然存在的一些问题，以期人们对该领域的研究现状有更清晰的了解。     

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?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

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…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.