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巧用四步教学法,提高生物教学质量
  1. [来源:未知]
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  3. [发布时间:2021-06-19 10:12]

  The author is in biology teaching,Adapt to the new curriculum reform,Using the four-step teaching method currently commonly promoted by our school,Step-by-step inquiry teaching,Fully mobilize students' initiative in learning,Make biology teaching out of the predicament,Good results have been obtained.Let's take the section "Adaptation and Influence of Biology to the Environment" (High School "Biology") as an example.Talk about the application of four-step teaching method in biology teaching.

  1。 Self-study guidance

  The primary task of teaching reform is to improve the teaching model.Cultivate students' autonomous learning ability (autonomous learning ability is the basis of other abilities).Self-study guidance,It is an effective way to cultivate students' independent learning ability,Biological knowledge is endless,Self-study guidance can enable students to fully feel the natural attributes of various creatures in nature.Fully experience the wonderful connection between creatures and creatures, between creatures and nature.Can truly reflect the in-depth understanding of knowledge,Achieve the dual effect of imparting knowledge and cultivating ability.Can play the main role of students in learning,It fully reflects the leading position of the teacher.

  Before students self-study,The teacher has to do some guidance,What if self-study?How to think?What previous knowledge is connected?Which points should I pay attention to?What to think about?What is the difficulty?and many more.During the self-study process,Require students to read textbooks carefully,With the original knowledge,To understand and think about problems independently,You can let go of your thinking,Highlight the autonomy and initiative of learning.In self-study,Students should sort out their ideas alone,掌握教科书的内容。写下您考虑的结果,对于不理解的地方,也要做上记号,方便交流补充。这样的,使学生逐渐养成自学的习惯,有利于激发学生的发散性思维,逐渐培养自主学习的能力。

  自学时,老师提醒学生应注意的几点:1,要注意相关知识的联系,自学时,应结合已学过的知识进行思考; 2,把课本上重点内容用笔勾划出; 3,将不理解的内容做上记号。自学“生物对环境的适应与影响”分段,应结合已学过的生态因素的有关知识,把生物的形态结构,生理习性等特征伴随所生活的环境相联系,来思考理解生物对环境的适应与影响。

  学生自学时,展示出自学思考题,让学生先独立思考。边自学边思考。自学思考题要体现出知识间的相互联系,具有一定的逻辑性。如“生物对环境的适应与影响”分段,自学思考题可以这样安排:1,生物与环境的关系体现在哪两个方面?2,生物对环境的适应有什么特性?3,生物对环境适应的普遍性体现在哪几方面?4,如何理解生物对环境适应的相对性?5,生物对环境有什么影响?

  在这个过程中表面看起来班级是静的,实际上学生的思维是活跃的,这一时期改变了学生被动接受知识的传统教学理念,不再视学生的头脑为接受知识的容器,而是将学生的学习自觉性调动了起来,这样有助于培养学生的自学能力,增强学生适应知识型社会的能力。

  我认为在这一过程中,教师应该多向学生杰出这一过程的本质,并辅之以相应的反馈性语言,如某某自学的很认真,某某没有认真自学等类似的语言从而使学生的注意力尽可能地保持在课本上,Thereby improving students' classroom learning efficiency.

  Second, inspire thinking

  After students study for a period of time,The teacher organizes students to discuss and analyze self-study questions in groups,And write down the results of the discussion.Every student thinks about problems from a different perspective,For the content of the textbook,All have their own opinions,The conclusions drawn from thinking about problems are not all the same.In the group,They can speak freely according to their own understanding,Fully express your views.After argument and discussion,Learn from each other's strengths,A unified opinion was gradually formed.然后,Under the teacher organization,Speaking in small groups (one representative for each group),Exchange the answers to thinking questions,Further exchanges and supplements.The teacher will comment again,Evaluate the different performances of students.这样,Students have a more thorough understanding of knowledge,A more comprehensive understanding of the problem.at the same time,During the group discussion,Make students realize that personal abilities are limited,The collective wisdom is infinite,It also gradually cultivated the sense of participation and cooperation.

  这一过程中,Teachers should pay attention to the externalization and internalization of knowledge.As far as the internalization of knowledge is concerned,Teachers require students to think carefully,In order to find the inner connection between knowledge,So as to highly summarize the knowledge of the students; in terms of the externalization of knowledge,Teachers should let students express their general knowledge of this lesson in words,力求获得清晰流畅的语言,简洁准确。通过这样的训练可以同时提高学生的语言表达能力,抽象能力和综合能力。我认为这样的培训可以为学生的终生发展服务。它体现了以人为本的教育理念。在老师的指导下学生通过自学思考, 分析和讨论,总结本课的主要知识结构系统很容易:

  三, 合规验收

  为了巩固所学知识,让学生做相应的练习,测试学生对所学知识的掌握程度,为了学习新知识,举一反三。要求学生独立思考,可以适当讨论。then,学生分开讲,老师评论。

  可以将“生物对环境的适应和影响”部分中的练习设置为:

  1. 生物学和生命相容的现象称为适应性。根据达尔文的说法,生物适应性是长期的结果。2。 所有生物对都具有一定程度的适应性,这表明生物体的适应是有性的; 毛毛虫的身体表面有毛,产生鲜艳的色彩,这种毛毛虫使许多食虫鸟望而却步,但这并不是对所有食虫鸟都有效,杜鹃每天可以吃掉数百只毛毛虫,这表明生物学适应也是有性的。3。 类似于动物适应其栖息地的环境颜色的身体颜色称为“拥有的动物不容易被其他动物发现,这可能对此有利。4, 警报颜色的特征,所以, 它可以对敌人起到预警作用,因此对动物有益。5, 模仿是由某些有机体在此过程中形成的,或者一种类似于其他生物学异常的状态。

  第四, 加强效果

  让学生独立思考1--2分钟,用您自己的语言简要总结本课中学习的主要内容,分开说老师评论。学生总结时不要求固定统一的语言格式,要求根据学生自己的理解,用自己的语言表达所掌握的内容,变课本知识为自己的知识,从而达到认识知识的升华。如本节课的主要内容可以简要归结为“生物既能适应环境又能影响环境,适应既有普遍性又有相对性。”等等,能表达主要意思就是。初步培养学生的分析概括能力。

  为检验学生掌握知识的情况,让学生做目标检测题。检测题难易要适度,要有利于培养应用知识的能力,独立思维能力等。要求学生独立思考,当堂完成,老师巡视,当堂评改,并做出评价。

  总结,未来社会难以在社会中生存的人不是没有知识的人,而是不会学习的人。四步教学模式恰恰体现了在老师指导下,充分发挥学生学习的主体作用,有利于挖掘学生学习的潜力,更有利于培养学生的自主学习能力,独立思维能力和创新能力等。值得在教学中进一步推广和普及。

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