The birth of digital writing equipment has given teachers new ideas to say goodbye to chalk pollution. The first to appear on the market is an electronic whiteboard, replacing chalk with an electronic pen. The electronic pen can choose different colors to write on the electronic whiteboard, but because the electronic whiteboard is only a sensing device, the "word" written by the teacher will eventually need to be displayed on the electronic whiteboard with a large projection. Without a large projection, there will be no words. Teachers are required to write under the strong light of a large projection. On the one hand, the teacher carried light while writing, and the body blocked the light, making it difficult to write the words. On the other hand, when the teacher was about to turn around after writing the words, the strong light hit the projection light and his eyes were hard to open. It is difficult for teachers to accept such repeated strong light stimulation. The original intention of the electronic whiteboard to let the teacher say goodbye to chalk is good, but without chalk pollution, it is ushered in by the more unpleasant glare pollution.
How to let the teacher really say goodbye to chalk without being stimulated by strong light? People naturally thought of writing directly on the LCD writing screen. In the market, electromagnetic induction writing screen, ultrasonic writing screen and resistive writing screen have been launched successively. Writing on the writing screen is like writing on a book. The electromagnetic screen and the ultrasound screen are written with a special electronic pen. The resistive screen can be written with any hard pen, or you can write directly with your hand. Teachers can lecture and write to students, and since then have changed the ancient habit of carrying students to write. The birth of the writing screen not only made the teacher say goodbye to chalk, but also the pollution of the strong light of the large projection, creating a good green environment for the teacher's health.
But the small writing screen is only 15 inches or 17 inches in size. How can we replace the large blackboard in the classroom? We have implemented it ingeniously with software. Using software to achieve "borderless writing", there is no border on the top, bottom, left and right, you can write very long articles and write very long formulas. You can write a formula of infinite length, the word size can be "zoomed", and the screen content can be "pushed, pulled, shaken, and moved" like a camera. You can also do more blackboard teaching, and you can call up multiple blackboards on the same screen.
To replace the real blackboard teaching with a writing screen, the electronic problem of teaching tools must also be solved. Our writing screen software provides complete electronic tools. For example, in order to save speakers from drawing compasses, rulers and set squares, the writing screen not only provides various line types, line widths and colors, but also provides quantitative display. When the speaker draws, the screen will automatically mark the length, angle, radius and other parameters. When drawing a three-dimensional pattern, the part blocked by the surface automatically generates a dotted line. The writing screen software provides mathematical drawing board, physical drawing board, chemical drawing board, information technology drawing board (IT drawing board), table drawing board, transportation drawing board, etc.
Unlike ordinary blackboards, the writing screen is also an efficient teaching tool.
Saving the teacher's drawing time is one of the main highlights of our software.
For example, one stroke can draw a three-dimensional figure, a chemical experiment, and a network topology in one minute.
The writing screen can record the teacher's blackboard writing and lecture sound simultaneously like a video recorder. The speaker writes while speaking, and the writing screen can record the speaker's writing process and his speech sound simultaneously, and can repeat the speech and writing process repeatedly. Just like audio and video recordings, the speech is eloquent, and a magical speech live reproduction. The lecturer only needs to click the "Static Record" button after each blackboard writing, and the blackboard writing can be immediately polished and the blackboard writing can be memorized. After the lecture, it can be played repeatedly, just like the "rewind" of the video recorder.
The speech and blackboard documents of the lecture can be immediately carved into a CD and become a teaching CD. You can also send the file to a distant place via e-mail for distance teaching.
The writing screen provides various background teaching boards. Such as: rectangular coordinate graph plate, polar coordinate graph plate, grid graph plate, iso grid graph plate, rice grid graph plate, staves graph plate and English writing graph plate, etc. Speakers can easily write and draw on various background boards.
Full-screen annotation function, graphics and files in various formats that can be displayed on the computer screen can be annotated. After annotation, it can be stored and printed. You can also send the annotated documents to leaders, colleagues, or students via email.
Windows can be opened in the writing screen, and multiple classrooms can watch the same teacher lecture at the same time.
The writing screen provides a courseware on-demand platform, which can sort and play the courseware live.
The writing screen has a powerful human-computer interaction function. The computer interface control and network browsing function can be conveniently carried out with a pen or hand. Any mouse can be controlled with a pen or hand.
The writing screen also has a handwriting text input function, which can transform handwriting into printed form.
The writing screen supports printing function and graphic storage function
The writing screen not only keeps teachers away from chalk pollution, but more importantly, it will become an important tool for improving the quality of teaching.
Our application of writing screen teaching has the following experiences:
1. Can greatly save teaching time:
In classroom teaching, improving teaching quality has always been a contradiction with classroom teaching time. With time, teachers can make inferences to students in the classroom, explain and practice repeatedly, and students will be able to understand and master knowledge. For example, in high school solid geometry, the syllabus stipulates that 36 class hours should be finished, and the traditional teaching methods should be used to teach the class. Teaching with this set of teaching tools only takes 16-20 class hours to complete the lecture. Teachers and students have more time for teacher-student interaction and repeated practice. After actual testing, the lesson time has been reduced and the teaching quality has improved. Using this set of teaching tools, in the classroom, no matter how many graphics the teacher uses, the transmission speed will not be affected by the bandwidth, the transmission speed will not be affected by the bottleneck problem or the computer will crash. Saving time creates conditions for improving teaching quality.
2. It is conducive to highlighting the key points of teaching materials and the difficulties in dispersing teaching materials
This set of digital teaching tool software has the functions of saving, reproducing, commenting and local magnification, which can repeatedly strengthen and reappear the textbook key points, and annotate the emphasis and local magnification to deepen the students' key memories.
The difficulty of teaching materials can be solved well with the help of this tool software. If you talk about the principle of the engine, you can disassemble the whole machine into parts, and explain it one by one. When combined, students can deepen their understanding and grasp the knowledge firmly and systematically, not only knowing it, but also knowing why.
3. This set of digital writing system teaching tools provides a learning environment for both teaching and learning, with both sounds and sounds, pictures and texts, blending situations and entertaining teaching. Students learn knowledge in such a learning environment, which increases interest in learning, deepens impressions, enhances memory, enhances the consolidation rate, and reduces the forgetting rate. A psychologist has done an experiment, taking 100 Chinese characters as an example:
The teacher explained with voice. After three days, the consolidation rate was 50% and the forgetting rate was 50%
Using graphic gestures to explain, after three days, the consolidation rate is 60-70%, and the forgetting rate is 40-30%.
Dynamic color graphic explanation, after three days, the consolidation rate is 80-90%, and the forgetting rate is 20-10%.
4. With this set of digital writing teaching tools, teachers also need to pay attention to several issues in the teaching process:
First, we must pay attention to the training of students' basic skills in teaching, especially the study of Chinese characters, such as stroke order and font style.
Second, when using this set of teaching writing tool software, teachers should according to the requirements of the textbooks, especially university professional courses, they need to add professional teaching courseware when preparing lessons. Although it takes a lot of time and effort to produce courseware, but once Pay, benefit for a long time, or pay for more than one person.
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