浅谈挂图在生物课堂教学中的应用

挂图在生物课堂教学中起着事半功倍的作用,不仅有利于学生对生物学知识的掌握,而且能有效地提高和培养学生的观察、分析、解决问题的能力.     

浅谈中学生生物阅读能力的培养

生物阅读能力是指中学生通过阅读生物学资料,获取生物学知识,并应用这些知识解决生物学问题的能力。《生物新课程标准》对学生生物学阅读能力的要求和以前相比越来越高。那么,如何培养和提高学生的生物学阅读能力呢？笔者结合多年高中生物教学谈谈自己在培养和提高学生生物阅读能力方面的点滴尝试。     

生物多样性研学旅行设计与实施——以泰山景区为例

以泰山风景区为生物多样性考察基地,从生物多样性研学旅行的设计策略出发,对自然观赏、调查探究、科普讲座3个实施环节进行详细阐述。研学旅行活动有利于加强学生对生物多样性概念的理解,迁移和应用生物学知识,有益于其探究能力的发展和生态价值观的形成。     

精心设计课堂练习 提高课堂效益

生物学教学的课堂练习,是学生在教师指导下进行的有目的、有系统的学习活动.它不仅有利于学生及时巩固、理解当堂所学知识,而且有利于培养学生的生物学能力和发展学生的智力.另外,也有利于教师检查自己的教学效果.因此,课堂练习对培养学生学习生物学的兴趣,提高教学质量有非常重要的作用.下面,根据我的实践体会.谈谈课堂练习设计应遵循的几条原则.     

以滤纸为媒介的实验改进

生物学实验常常是手脑并用的实践活动,有利于培养学生观察能力、思维能力及分析问题和解决问题的能力.生物学实验的有效开展符合生物学学科的特点,符合教学过程重实践的课程基本理念,有利于学生理性思维的形成.生物学实验对培养学生的生物学素养很重要,但一些实验繁琐、费时,凸显不了生物学的核心知识与概念,对实验的改进和提高实验课的效率变得尤为重要.     

生物教学中学生创新思维与能力的培养

在生物教学的过程中,应充分发挥教师的主导作用和学生的主体作用,使教学成为学生一种愉悦的情绪生活和积极的情感体验,并在其中培养学生的创新思维和能力.这不但有利于学生熟练掌握生物学知识和生物技能,更有利于培养具有个性和创新能力的人才.下面我就谈谈在生物教学中如何培养学生的创新思维与能力.     

在《生物》课中实施素质教育点滴

就生物学这一门学科而言,进行素质教育的尝试,目前具备了一些优于其他学科的条件,如生物学本身是一门实验科学,有利于培养学生的动手能力和创新精神;生物学很好地应用了数理统计,有利于培养学生的抽象思维能力;生物绘图则有利于提高学生的形象思维能力和审美能力;现代生物学又包含了许多边缘学科,有利于培养学生全面观察事物的能力;生物学涉及我们人类本身的起源,有利于学生树立辩证唯物主义的世界观;生物学涉及人类的生存环境和人体的健康,有利于培养学生的环保意识;生物学要研究、开发     

加强实验教学,提高生物教学质量

生物实验是生物教学中使学生获得生物知识的重要手段,也是培养学生动手操作能力和实践创新能力的重要途径.在生物教学实践中只有自觉地运用生物实验进行组织教学,才能提高学生的实践能力,提高生物学教学质量.     

智慧引领精彩生成——高中生物课堂教学动态引导策略谈

高中生物是一门知识性与实践性都很强的学科.所以,在学习生物的过程中,首先应该引导学生学会观察、学会实验,培养学生的分析能力和综合运用知识的能力.了解生物学知识在人类实际生活中的广泛应用,通过对生物学的学习,能够端正学习态度、完善生物理论体系、提高解题技巧,并且具有实践能力、生物意识和创新思维.     

寓生活化于生物教学中

在生物教学中,教师将生物学知识与学生的日常生活相联系,有利于知识的理解与记忆。提高学生发现问题、分析和解决问题的能力,为学生的终生学习打下基础。选择与实际生活相联系的内容、关注社会热点问题,培养学生获得知识、应用知识的能力。     

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.     

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.     

团图为数的图中的闭团贯数

Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.     

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.