浅谈生物教学中的导入

在生物教学中设计一个好的导入对生物教师是非常重要的.好的导入能集中学生注意力,激发学习兴趣,明确思维方向,为整个教学过程奠定基础.     

化学课教学导入探究

上好一堂化学课，有好的教学导入非常重要。教学实践证明，不同的定向导入对学习成果有不同的影响。本文试就导入在化学课教学中的作用和常采用的方法如直接导入、设问导入、追问导入、讨论导入、对比导入、实验导入、趣闻导入、生活导入年口计算导入等导入方法谈点拙见。     

论生物课堂中的导入原则及方法

导入环节是驱动课堂教学有效实施的动力,是激发学生学习兴趣的法宝,设计实施好导入环节对每个教师而言都是非常重要的教学工作。本文结合生物课堂教学实例,围绕四种导入方法进行介绍。     

生物教学中导言设计方法初探

在生物教学中,新课导入得好能调动学生的学习积极性和主动性,采用灵活多样的方法设计导入新课的导言,能调动学生的学习积极性和主动性,提高教学质量。     

利用情境导入法提高生物课堂教学的有效性

情境导入是一堂课良好的开端,也是教学成功的保障。情境导入设计和运用得好,不仅可以吸引学生,还可以唤起学生的求知欲和探究欲,使学生积极思考,主动探索。因此,要利用情境导入法提高生物课堂教学的有效性。     

浅谈初中生物课堂激趣导课法

<正>"好的开端是成功的一半",一节课的开场白直接影响到整堂课的教学效果。如果教师以激发学生的学习兴趣为目的,设计并组织好新课的导入,就可以收到先声夺人的效果,为整个课堂的教学打下坚实的基础。下面我根据自己的生物教学教研实践,谈谈如何把握好"激趣导入"这一重要     

良好的开始是成功的一半——生物教学导入设计初探

魏书生老师说：＂好的导语像磁铁,一下子把学生的注意力聚拢起来,好的导语又是思想的电光石火,能给学生以启迪,催人奋进。＂可见,导入是课堂教学中的一个关键环节。在生物教学中,一个恰当的导入可以激发学生的学习兴趣,     

优化生物教学设计 提高生物课堂效益

在提高生物课堂效益的众多途径中，生物教学设计的优化占有举足轻重的地位，具体可从课题导入、课堂提问、实验教学这几个方面来体现优化生物教学的重要性。     

初中生物教学如何导入新课

下面就生物教学实践谈谈导入新课的几点尝试。 一、通过复习旧知识的方式导入新课 从旧知识导入新知识，引导学生去发现问题，是生物教学最常用的导入方法。教学过程中，讲授新课之前，从新旧知识的联系中，抓住新旧知识的不同点．对旧知识加以概括，提出即将研究的问题，这样既促进了旧知识的巩固，又明确了本节课的学习目的、任务和重点，而且也能激发学生探求知识的好奇心．使学生产生积极寻找问题答案的强烈愿望。     

初中生物教学导入方法刍议

初中生物教学导入方法刍议刘玉宝万事开头难，讲课也不例外。实践证明，上课开好头，是一节成功课的良好开端。尤其被学生认为是“副课”的生物课，更应该设计好开头，把学生的“胃口”吊起来，以使之注意力集中，全神贯注地听课。现结合自己的教学实践，谈谈初中生物课的...     

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!     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.