Information technology, let the children play math!
Xie Nengchao is a senior mathematics teacher of the Affiliated Primary School of Huazhong Normal University and a member of the famous teacher's studio of Dong Yan. He has won the first prize in the national first prize. In 2012, it was selected from the Wuhan Municipal Education Bureau to Tibet branch. More than 20 cases and papers were written in the province, city, District, or public.
In 2010, I was lucky to be lucky to send it to the whole country through the selection of information technology and discipline. In a series of course selection, lesson preparation, class and study course, the magic of information technology gradually appears, and the teaching effect is becoming more and more ideal.
In the very love cartoon pupils "smart Ikkyu San" appeared in the &mdash issue of a stroke; — “ Tian ” the word can write? The choice of self created teaching is very close to the students' life, which is beneficial to the development of students' spatial imagination. Because the class knowledge capacity is larger, so the electronic whiteboard teaching, improve teaching efficiency, compared with the traditional mathematics teaching form, has the following advantages:
It is becoming more and more popular with teachers and students to make the teaching content a theme website. Teachers carry out teaching activities as they desire, and students study independently and selectively, and do not deviate from the subject.
For the purpose of &ldquo, &rdquo, and the needs of this content, the theme website of this lesson is built into a form of Sketchpad, which can achieve functions such as drawing, example learning, practice consolidation, clearance, playback and so on, so as to achieve good teaching effect.
1, the whiteboard inquiry, deep into the shallow.
The mathematical knowledge has a strict logic, and the law of mathematics should also have common generality. In order to reveal the law of painting and painting, it is necessary to explore and discover. In exploring the law of a stroke, the above six pictures are selected and presented through the courseware.
The students are happy and cooperate with each other. They will be able to draw a stroke of “ √ ” not a stroke of “ × ” When a student draws a picture to produce a rich perceptual experience, it will naturally cause questions: Yes, how can some drawings be written, but some of them do not? The new curriculum standard of primary school mathematics clearly puts forward that it is necessary to cultivate the students' ability to find problems, to raise problems, to analyze problems and to solve problems. With the problem, the teacher leads the student to guess: can a drawing be related to what the figure can be? Naturally, the students have guessed that it is related to the point. Then it is observed that the points in the graph can be divided into two kinds: singularity and even points. Team work and electronic chart:
With a large amount of data, student exploration has finally found that whether a picture can be related to singularities or not is not related to even points. When the number of singularities is 0 or 2, one can draw strokes.
Next, in exploring the process of painting, the whiteboard also plays a huge role. Each color represents a different way. Children's multi angle thinking is shining like this bright colored line. At this time the teacher reminding the students: the students pay attention to the starting point and the end point. Finally, through comparison, we find that graph 2 is all even points, and from any point, we return to this point at last. And Figure 4 has 2 singularities, which can only start at a singularity and end with another singularity.
Such a ring, step by step, at this time the students have been full of fish, full of confidence, to solve the related problems is ready to try. Thanks to information technology, rich materials enable children to have a panoramic view. Gorgeous colors make people memorable. Teachers and students enjoy the pleasure of acquiring knowledge freely between free blackboard and light mouse.
2, story teaching, cultural synchronization.
The seven bridge problem is a typical representation of a stroke problem. The whole class occurs in about seven of the story bridge into the city of Konigsberg not only attract the attention of students learning, at the same time, reveal the subject, clear learning objectives.
With the help of a certain material to explore the law, came back to solve this problem, the whole class before and after the echo, the students in solving problems like nature itself, at the same time, the acquisition of mathematical knowledge, understand the emergence and significance of a stroke, to cultivate interest in learning mathematics and emotion.
Electronic whiteboard, the language is difficult to describe the problem clearly show that the students understood when the teacher read the questions, the end shows the moment intention, the answer has come out from their mouth. The problem of mathematical culture background is so easy to solve, perhaps this is the reason of thick and thin hair.
3. The practice of breaking through the customs, the interaction of man and machine.
A good way of evaluation is often a good catalyst in the classroom and a ladder for students to succeed. German educator Diesterweg once said: “ the art of teaching is not to teach skills, but to inspire, awaken and inspire. &rdquo, &ldquo, Internet +&rdquo, classroom teaching evaluation under the times are diversified, including traditional teacher student evaluation, student evaluation, and new machine evaluation for people.
The design of "interesting strokes" exercise activities, the theme site set the following automatic evaluation of the following.
The red dot on the left, click on any student, can immediately make the correct &rdquo or “ “ ” error; feedback, until the students correctly answered the questionIn the study, there are even two different solutions.
Such an evaluation is not only an effective complement to other evaluations, but also allows students to stay in &ldquo, play &rdquo, enjoy &ldquo, and moisten &rdquo.
With the participation of information technology, our math class has also become very interesting and vibrant. Finally, this lesson is also honored to be a good result of the national first prize. Thanks to information technology, it brings vitality to education in the new era and brings new feelings. The teacher is not too much to explain, can sense things can only be sensed intuitively presented; students can read books will live to experience the process of mathematical laws, and use, fully display the learning process and results.
Remember the moment that the game is about to end, a student yelled, "“ ah!" This is so fast, I haven't played enough yet. ” yes, our children in mathematics and information technology integration is boundless, the joy of learning, in his eyes is playing &rdquo, “; if each class can let the children play “ mathematics ”How good it should be!
