Keywords interactive electronic whiteboard; Consciousness; superiority
brief introduction
Interactive electronic whiteboard can freely draw and write on it like a blackboard, and can realize interactive control with computers. It is a new generation of teaching media that can conveniently present, process and store colorful digital materials, and provides a flexible platform for classroom teaching of various disciplines. In primary school mathematics teaching, timely and appropriate use of interactive electronic whiteboard can greatly stimulate students' enthusiasm for active learning, make students active in thinking, be interested in participating in teaching activities, and cultivate students' ability to think, explore and form actively. On the other hand, it can make teachers focus on teaching and students focus on learning, thus improving teaching quality, optimizing teaching process and enhancing teaching effect. Using interactive whiteboard teaching can really achieve some effects that traditional teaching can't achieve. It can't just stay on the plane of combining computer and projection, but should make full use of its advantages to serve teaching.
summary
First, turn abstraction into image and clarify concepts; Second, turn triviality into details and pay attention to amplification; Third, turn abstraction into intuition and refine the process; Fourth, simplify the complex to facilitate teaching.
conclusion
Electronic whiteboard teaching provides a good educational platform for teachers and students, and makes full use of rich educational resources in classroom teaching. Its due efficiency makes classroom teaching more vivid and exciting, and at the same time, it also allows students to actively participate in teaching, which greatly improves students' autonomy and enthusiasm in learning and achieves twice the result with half the effort. Only the rational use of interactive whiteboard can strengthen the dominant position of teachers' teaching and promote the all-round development of students' learning.
Interactive electronic whiteboard can freely draw and write on it like a blackboard, and can realize interactive control with computers. It is a new generation of teaching media that can conveniently present, process and store colorful digital materials, and provides a flexible platform for classroom teaching of various disciplines. In primary school mathematics teaching, timely and appropriate use of interactive electronic whiteboard can greatly stimulate students' enthusiasm for active learning, make students active in thinking, be interested in participating in teaching activities, and cultivate students' ability to think, explore and form actively. On the other hand, it can make teachers focus on teaching and students focus on learning, thus improving teaching quality, optimizing teaching process and enhancing teaching effect. Using interactive whiteboard teaching can really achieve some effects that traditional teaching can't achieve. It can't just stay on the plane of combining computer and projection, but should make full use of its advantages to serve teaching. At present, some superficial understandings of whiteboard in mathematics teaching are summarized as follows:
First, turn abstraction into image and clarify concepts.
In the five-year area awareness teaching last semester, hectare is an abstract concept. This is the key and difficult point for students to understand how big this area is. Before class, I carefully watched the videos of several experts attending this class, and found that one of them took the familiar environment of students as the starting point. It happened that our school asked two teachers to make a survey of each area of the school in a week or so. I borrowed a sketch from them and drew the school plan more accurately with drawing software. After drawing the floor plan, I suddenly found that although the school area is not large, there are still several ways to enclose a single hectare. What if you simply make a PPT and make a one-hectare framework on it, and students don't follow my routine? It suddenly occurred to me that if the interactive whiteboard is not so complicated at all, there is a circular drawing of a rectangle (square) on the whiteboard, and students can draw a circle of almost one hectare according to the calculation of the hectare area. In practical teaching, students are very familiar with the campus and have a high enthusiasm for learning. Besides drawing a circle where there is a hectare, students can also tell where there are two or more pieces that are almost a hectare. I will use the function of copying graphics on the whiteboard to show you in time to verify whether their conclusions are correct. Through this intuitive demonstration, the seemingly static and isolated things are linked, and a knowledge generation situation is constructed, so that students can easily find out the differences and connections between things, thus clearly obtaining concepts and breaking through the key points and difficulties in teaching.
Second, turn trivialities into details and pay attention to amplification.
In the teaching of statistics, it is often difficult to achieve statistical accuracy. It is difficult for students to be careful. Finding the point of the data is the key. If it is the same as the data on the vertical axis, it is easier for students to find it. The data can't all be the same as the data on the left, and most of them are between two data, so it's not so easy to find out the approximate location. Therefore, it is very important to do a good demonstration. Before statistics teaching, the statistical chart is imported into PPT, and then all the data are completed more accurately by using the animation effect. During the demonstration, I play PPT, enlarge the statistical chart as much as possible with the magnifying function, and then let the students subdivide it. Where are the points in these two data, near the top or below? Because the picture is enlarged, the position of the point can be found in more detail. In this way, the amplification will be synchronized with the animation demonstration, so that students can be more clearly familiar with the completion of the statistical chart. After the students practice, they will show their homework on the screen in the form of pictures, so that students can see for themselves whether they have found the right position.
Through this intuitive demonstration, the seemingly static and isolated things are linked, and a knowledge generation situation is constructed, so that students can easily find out the differences and connections between things, thus clearly obtaining concepts and breaking through the key points and difficulties in teaching.
Third, turn abstraction into intuition and refine the process.
The use of electronic whiteboard in drawing teaching has played a more effective role. When teaching unit translation and rotation, students often cannot determine the number of grids in translation. In teaching, they copy the original graphics, and then use the "drag" function to drag the copied graphics to the designated places one by one, and drag them several times at the same time. Under the teacher's intuitive demonstration and drag, students can clearly see the whole moving process and learn the method of calculating the grid. Rotation teaching is more difficult than translation, and the method is basically the same as translation. After copying the graphics, use the rotation in Drag to rotate the copied graphics to the required specified position. They all operate the copied graphics, and further tell students that the appearance of the graphics will not change regardless of translation or rotation, only the position will change.
Fourth, simplify the complex to facilitate teaching.
In the past, when we used pictures, we could only show them, but the electronic whiteboard solved this problem for us. We can first import the pictures or homework we want to use into the computer and then present them on the whiteboard. Teachers and students can circle and pose directly on the picture. Students are interested and willing to try, so that students can actively participate in inquiry activities at all times.
If we want to study the problem of simple graphic coverage in the second volume of the fifth grade, we can calculate the total number of graphic coverage by the number of graphic translations. Flash can be used to drag graphics when making courseware, but with whiteboard, you can copy and drag graphics directly with electronic pen, which is clear at a glance, saving the time of making courseware and playing a different role. For another example, when exploring the density of graphics, some students have objections to whether pentagons can be closely arranged. At this time, I asked the students to copy several pentagons with the copy function of the electronic whiteboard, and then asked them to drag the graphics with an electromagnetic pen to rotate the density. Students can verify their doubts by hands-on operation. It also played a role in solving problems.
With its unique function, interactive electronic whiteboard gives students a clear situation, skillfully combines students' cognitive activities with emotional activities, solves the problem that logical thinking and image thinking can not develop harmoniously, and effectively improves students' thinking quality. It guides consciousness with unconsciousness and accompanies rationality with emotion, so that students can gradually enter the learning environment in a relaxed and happy state, thus achieving the established learning goals.
Electronic whiteboard teaching provides a good educational platform for teachers and students, and makes full use of rich educational resources in classroom teaching. Its due efficiency makes classroom teaching more vivid and exciting, and at the same time, it also allows students to actively participate in teaching, which greatly improves students' autonomy and enthusiasm in learning and achieves twice the result with half the effort. Only the rational use of interactive whiteboard can strengthen the dominant position of teachers' teaching and promote the all-round development of students' learning.