He Junping Neiqiu Vocational and Technical Education Center, Xingtai City, Hebei Province, Xingtai, Hebei 054200
Information technology is constantly evolving in the course of development, as human information processing needs increase. Information technology can solve practical problems through the improvement of information collection, information storage, information transmission, and information processing capabilities. In biology, some teaching content is very abstract, and it is difficult for students to understand and accept. Multimedia can make students intuitive to abstract teaching content, easy to accept and easy to understand. The integrated teaching mode of the Information Technology and Biology Department can not only increase students' interest, but also stimulate students' curiosity, make students understand quickly, and improve students' learning efficiency.
1. Use information technology to express the fresh biological world, stimulate students' interest in learning and improve learning efficiency
Interest is the emotion of being interested or concerned about things. It manifests as students' selective attitudes and positive emotional responses to certain things and activities. Interest is based on needs and has important significance in practical activities. Interest can make students concentrate and produce a happy and tense mental state. This will have a positive impact on students' understanding and will help improve the quality and effectiveness of learning. Biology has always been a subject of great interest to students, but when really studying the contents of books, students often lose patience, because the teaching content on books is not all the surface phenomena they are very interested in. Especially in high school biology, there are many basic and theoretical contents. In order to stimulate students' interest in learning, you can make full use of a variety of audio-visual teaching methods to create learning situations. Computer multimedia courseware has strong interactive teaching, rich and lively operation interface, and can produce a rich and colorful human-computer interaction mode, which is easy to stimulate students' interest in knowledge, cultivate learning emotions, and form learning motivation.
Interest is the best teacher. Learning without interest not only wastes time and energy, but also fails to achieve good results. And if you learn the knowledge you are interested in with great interest, your expansion and innovation ability will continue to improve, and you can receive better learning results.
For example, in the study of "Genetic Material of Biology", through the Flash animation, the static illustration of the book is demonstrated as a dynamic process of bacteriophage infection. To be sure, students are more willing to watch the infection process demonstrated by the computer, and they can also clearly understand that it is the DNA molecule of the bacteriophage that invades the bacteria, and the protein shell is left outside the bacteria, thus realizing that DNA is genetic material.
2. Use information technology to display life systems, expand students' thinking space, and increase classroom knowledge capacity
In the process of blood circulation, blood enters the aorta from the left ventricle, then flows through the various arteries, capillary networks, and veins of the whole body, and finally collects into the upper and lower vena cava, flows back to the right atrium, and then presses into the pulmonary artery through the right ventricle. The whole process of flowing through the capillary network of the lungs and then from the pulmonary veins back to the left atrium can be vividly, systematically and completely displayed in just a few minutes. Nervous system, respiratory system, urinary system, etc., through multimedia courseware, show the relationship between each system of biological individual, system and system. This is helpful for students to microscopically explore the internal structure and individual characteristics of living things, which not only broadens the students 'horizons, but also cultivates students' thinking ability. The use of courseware to assist teaching can make full use of the classroom time of 40 minutes, optimize the classroom teaching structure, and improve teaching efficiency. In the traditional classroom teaching, teachers are often tired of a large number of blackboard writing, basic concepts, key terms, etc., all use blackboard writing, students also feel bored. Classroom teaching often encounters a difficult problem, that is, a large number of blackboards occupy a large amount of classroom time, and the classroom teaching rhythm is slow. This phenomenon is especially manifested in the exercise class. For example, we can use common Powerpoint to make a slide, arrange a problem on a slide, solve a problem in the class and click, you can show the next problem, it is very easy to operate. In theory, there is no limit to the number of exercises that can be prepared in advance for this courseware, and pictures can be easily inserted, which can fully meet the requirements of classroom teaching.
3. Teaching multimedia courseware to help students grasp the key points and overcome difficulties
In the whole teaching process, it is difficult to express accurately, vividly and vividly with only pictures and language. Multimedia courseware is applied to biology teaching. Combining videos, pictures, text, etc. can simplify and represent complex life processes. For example, when teaching the content of the lesson "Gene Gene Guided Protein Synthesis", genetic information is transcribed And the process of translation is the focus of teaching in this section, and the process of translation of genetic information is the difficulty of this lesson. The multimedia courseware can vividly and vividly reflect the gene expression process. When using multimedia teaching, teachers should pay attention to choosing the timing to help students overcome difficulties and abstract into images. Through the teaching of multimedia courseware, students can truly feel the true meaning of life, perceive the course of life, no longer be confused by the abstract text narration of the book, highlight the key points, accelerate the understanding and memory of the difficult points, and thus break through the difficult points of teaching.
Fourth, use multimedia courseware to design and display interactive exercises, timely and accurate feedback of classroom teaching effects, and effectively control the teaching process
Classroom teaching is a process of teaching and learning, which must reflect the teaching principles of student learning as the mainstay and teacher teaching as the mainstay, as well as feedback on teaching effects. In the classroom teaching, through the students making questions, check the students' mastery of the knowledge of this class, and effectively adjust the deficiencies in the teaching process and correct them in time. The more timely the feedback, the higher the correct rate for students to obtain the learning effect and the better the teaching effect. In order to achieve the perfect teaching effect, the key and difficult knowledge points must be designed as courseware practice questions, so that students can do more questions, and timely consolidate the key and difficult points in the classroom. For example, in the lesson "Control of Proteins on Biological Traits", after learning the process of DNA transcription to form mRNA, you can arrange such an exercise in the courseware for students to fill in a vacant base on the computer screen by keyboard The sequence table of DNA and mRNA allows students to fill in the vacant parts and check whether the students can understand the essence of the transcription process through the base pairing relationship between the DNA template and mRNA. Such classroom exercises can not only increase students 'interest, enable students to take the initiative to participate, but also enable teachers to discover students' lack of knowledge in a timely manner and take corresponding measures in a timely and accurate manner to make practical preparations for future lessons and classes guide.
references
[1] Cao Xiaoyan. Examples of classroom teaching integrating information technology and biology [J]. Biology Teaching, 2010, 10
[2] Lan Hongsheng. Thinking about the integration of information technology and curriculum [N]. China Education News, 2001, 12 (4)
[3] Cao Xianping. Information technology and the transformation of teachers ’teaching methods [J]. Biology Teaching, 2004, 6
[4] Du Linsen. The application of multimedia in biology classroom teaching [J]. Middle School Biology, 2006, 12
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