First, optimize the situation and stimulate interest.
As a math teacher, I have been trying to explore, hoping to create a teaching situation that fits students' reality through effective ways, so that students can actively participate in the whole process of learning. Traditional classroom teaching is mainly based on limited materials such as flip charts and books, which can't stimulate students' interest in learning, and students' attention is easily distracted, and their enthusiasm for learning is not high, so classroom teaching can't achieve good results. The introduction of electronic whiteboard into the classroom has the characteristics of picture, text, sound and image, which makes the teaching content richer and more intuitive, enables students to enter the teaching situation, participate in teaching, understand the occurrence and development of teaching, make students the masters of learning and optimize classroom teaching.
In the teaching of the second volume of the third grade "Axisymmetric Graphics", the kites provided in the book are introduced into the situation of flying kites in spring. The question is: What kind of kites will you choose? Students will choose symmetrical kites. At this time, with the introduction of students' favorite activities, students' interest is stimulated at once and their thinking becomes active. The whole teaching process is designed as a graphic kingdom, which deeply attracts students' attention through "test station", "exhibition room", "practice room" and "projection room", so that students can consolidate their understanding of axonometric drawings, better integrate with reality, and infiltrate their understanding of beauty and the introduction of some traffic and geographical knowledge. Good teaching situation can fully mobilize students' initiative and enthusiasm in learning, improve the connection between life practice and mathematics knowledge, and improve the actual effect of mathematics teaching. Flexible use of electronic whiteboard to optimize the materials and situations provided by books can make students easier to understand, more suitable for life and better stimulate their interest in learning.
Second, make use of resources to generate electricity in time.
With the development of information technology, our teaching methods are also changing quietly, and our multimedia teaching is also introduced into electronic whiteboard from Authorware, Powerpoint, Flash and other software production. Courseware made by software is usually just an operator. Courseware can only go according to the teacher's preset, and designing and making a variety of preset situations usually requires a lot of experience, which lacks flexibility and real-time interaction in use. After using the electronic whiteboard, all-round interaction can be realized between teachers and students and between students. In the classroom, teachers' presupposition is only a kind of presupposition, which can be adjusted at any time according to the actual situation in the classroom. Using the extremely rich resource library of electronic whiteboard, in math class, we only need to choose from the resource library according to the needs of teaching, as long as we find the required material in advance and drag it out with an electromagnetic pen in class. Teachers can operate on the whiteboard through the "electronic pen", which can write, erase and modify freely and reflect students' ideas in time. By using the tools provided by the whiteboard, such as ruler, triangle and compass, the "electronic pen" can easily draw various beautiful figures.
For example, when learning the first volume of the fourth grade "Discovering the Law", teachers can drag pictures from the resource library, and use the tool of "dragging copies" to let students sort out the pictures and put several arrangements together to help students understand. Students can easily understand through observation, generate the materials needed in class in time, and make the image extraction problem intuitive and easy to understand. Using electronic whiteboard to assist mathematics teaching, teachers only need to prepare materials, boldly preset and generate them in time, and call the materials in the material library at any time, which saves the time of courseware making, optimizes the process of students exploring new knowledge, saves time for improving classroom effectiveness, and can better handle the relationship between presupposition and generation.
Third, seize the opportunity to simplify the complex.
People's thinking is usually image thinking first and abstract thinking later. The pupils we teach are more interested in some intuitive things. Mathematics knowledge is abstract, and teaching methods directly affect students' interest in learning and their mastery of knowledge. Interactive whiteboard can present the learning content vividly and intuitively, and fully mobilize students' various senses to learn. Using electronic whiteboard teaching and grasping the opportunity accurately can better break through the teaching difficulties, highlight the teaching focus, and truly make the difficult easy and the complicated simple.
When teaching the second volume of Translation and Rotation in Grade Three, students can't flexibly understand and use the concepts of translation and rotation. Use the translation and rotation tools in the electronic whiteboard to drag pictures to attract students' attention, find the knowledge points of learning under the intuitive and dynamic demonstration, and figure out how to translate them, so as to make the learning content concrete and visual, thus improving students' learning enthusiasm and classroom teaching effect.
Some students can blurt it out easily. According to the students' instructions, use the rotation in the electronic whiteboard to demonstrate the square that becomes straight after rotation, and let the students find that the side length of the rotated square is a little longer than 3, and the area is not 9 squares. Ask the students to observe and discuss. You can calculate the score represented by the color part of the picture by cutting and shifting or considering the blank part. According to the students' answers, through the intuitive demonstration of electronic whiteboard, through analysis, comparison, students' self-exploration and self-experience, teachers turn mistakes into new learning, turn difficult knowledge into better-understood knowledge, and gain a deeper perceptual knowledge, so as to better understand and remember what they have learned, effectively cultivate students' observation ability and spatial imagination ability, and enhance students' transformation consciousness.
Fourth, increase ability and develop thinking.
Students' memory of mathematical knowledge must be based on understanding and application, otherwise it will form a strange image of remembering quickly and forgetting quickly. Every class and after class should have enough practice to consolidate, so that simple initial perception and mechanical memory can be internalized into their own knowledge and skillfully used. As the saying goes, practice makes perfect, but if we rely solely on the presentation of small blackboards and books in each exercise, it will not stimulate students' interest in learning well, let alone reflect the close connection between mathematics and real life. So teachers can directly use the rich resources of electronic whiteboard, or collect more resources, which can be background pictures, animations, sounds, videos and so on.
Using electronic whiteboard to present the scenes in life in various forms, let students solve problems in familiar situations, realize the value of mathematics, further enhance students' confidence in learning mathematics, and feel that learning mathematics is a happy thing. Making full use of whiteboard resource database can effectively increase the teaching capacity and let students accept more mathematical situational exercises from life in class. The electronic whiteboard can flexibly consolidate the learned knowledge in different forms of practice, and solve the single mode of teachers giving questions and students doing them. When we know the score, we can fill in the blanks easily by representing a score with a paint bucket. Students can stimulate their thinking in practice, and they can come up with different forms to express the same score, which deepens their understanding of the meaning of the score and fully mobilizes their enthusiasm for learning in activities. Electronic whiteboard can make use of preset resources and snapshot-recorded classroom-generated resources to increase the amount of information and optimize the practice form in time, which can more effectively improve classroom teaching efficiency and develop students' thinking.
Our teachers should reasonably apply electronic whiteboard to mathematics classroom teaching, build an interactive platform for students' learning, and realize classroom interaction through various learning methods. Optimize the teaching situation, make rational use of resources, enrich and activate the teaching content, improve the way of teaching and learning, and finally realize the optimization of primary school mathematics classroom and effectively improve the effectiveness of classroom teaching.