生物学实验题实验步骤解答技巧

一个完整的生物学实验题考查内容包括：实验原理、实验目的、实验假设、实验步骤、实验现象、实验结果分析以及实验结论的获得,甚至包括实验前准备。其中实验步骤是一个实验的中心环节,是利用实验原理获得实验结论或者验证实验目的的过程,几乎是每年生物学高考所有实验题都会涉及到的内容。     

如何做好初中物理探究题

初中物理实验题要抓住实验目的,所有的实验都是围绕实验目的进行的。实验在物理这门课中具有十分重要的位置,它是物理知识的重要组成部分。学习物理,要高度重视实验。教材中的实验探究、小实验要尽可能自己动手做。要逐步学会根据实验的目的选择实验仪器、设计实验方案、按规则进行实验,以实事求是的科学态度分析实验现象和实验数据、得出实验结论。     

几个初中物理实验的对比

人教版初中物理教材中有24个比较重要的实验,虽然各个实验的实验目的不同,但有些实验所用的器材却相同;有些同一个实验却可以依据不同的实验原理,选用不相同的实验器材;还有些实验虽然实验器材和实验目的都不相同,但实验的设计方法却相同.我们把这三类实验进行分析对比,以引导学生加深对实验的理解.一、实验器材相同,实验目的不同的实验有些物理实验,尽管用的实验器材相同,但由于     

改进实验形式 提升实验品质

实验是形式和内容的统一体,实验的形式和内容又是对立统一的。通过更新实验形式,改验证性实验为探究性实验,改演示实验为师生协同实验,改固定实验小组为自由结伴小组,改教师提供材料为学生选用材料,改课内实验为课前课后实验,改封闭性实验为开放式实验。改只重操作结果为重操作过程,可以有效地完善实验的内容,提升实验的品质,增强实验的效果。     

再谈物理演示实验的六大改变

本文在笔者已发表的单个实验到连环实验,结论实验到过程实验、"完美"实验到不成功实验、单科实验到跨学科实验、"平淡"实验到"刺激"实验、平面实验到竖直实验六个方面改变的基础上,从另外六个方面再谈物理演示实验的改变。     

学会观察由现象得正确结论尝试思索在求异中创造思维

1 明确实验的目的和观察的重点 化学实验从研究方法上可分为探索性实验、验证性实验和设计性实验.探索性实验是通过实验得出结论的研究方法;验证性实验是已知结论,通过实验求证的研究方法;设计性实验是根据实验目的,自己设计操作或先提出假想,然后再设计实验加以验证的研究方法.不论哪一种化学实验,都要有明确的实验目的.     

微生物学“综合性”实验——“酿酒酵母子囊孢子的培养与观察”实验设计与实施

通过改革实验类型、实验内容和实验实施方案,将微生物学实验——酿酒酵母子囊孢子的培养与观察设计为生物工程专业微生物学综合性实验。在实验操作,实验准备方面加大对实验技能掌握的要求,通过实施实验,学生实验技能得到较大提升,证明该实验的设计合理,实验工作量饱满,达到了相应实验教学项目改革的目的。     

例谈中学物理实验条件的控制

物理实验中,控制好实验的条件是获得成功实验的关键．实验条件的控制是指在实验开始前、实验过程中以及实验结束时对实验装置与环境的控制．下面笔者就中学物理实验中如何控制实验条件进行探讨．     

高中物理演示实验教学的创意设计

演示实验是高中物理实验教学的重要组成部分.因此教师应关注物理演示实验教学的创新优化,并以创设实验情境、增加实验互动、强化实验思考、培养实验能力为导向,对演示实验的实验内容、实验环节、实验问题、实验空间开展创意设计,如此可提高物理演示实验的教学品质.     

高中物理演示实验教学的创意设计

演示实验是高中物理实验教学的重要组成部分.因此教师应关注物理演示实验教学的创新优化,并以创设实验情境、增加实验互动、强化实验思考、培养实验能力为导向,对演示实验的实验内容、实验环节、实验问题、实验空间开展创意设计,如此可提高物理演示实验的教学品质.     

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.