Huang Jiasheng Guangxi No. 46 Middle School Nanning Guangxi 530232 Abstract: Many teachers and students in primary and secondary schools hope that their classrooms can be turned into multimedia classrooms. However, it is difficult to popularize because of the large amount of capital invested in the establishment of a standard multimedia classroom. Now we introduce a simple and practical multimedia classroom with less investment and use, and how to use it. The promotion and use of multimedia classrooms can greatly promote the improvement of education and teaching. Many teachers and students in primary and secondary schools expect their classrooms to become multimedia classrooms, but due to the investment in the establishment of a standard multimedia classroom The funds are too large, about 50,000 to 100,000 yuan, some primary and secondary schools with better conditions can be equipped with a standard multimedia classroom, and this media classroom is often only available for teachers to open classes Occasionally used, it is difficult to play a big role in daily teaching work. More schools do not even have a multimedia classroom. It can be said that the vast majority of primary and middle school students in China are still unable to enjoy the benefits of using multimedia technology for teaching. In fact, it is possible to complete the construction of simple and practical multimedia classrooms with very little capital. Under the current economic conditions, it is not difficult to promote the popularity of such multimedia classrooms. We only need to add a large LCD TV in the ordinary classroom to build a simple and practical multimedia classroom (hereinafter referred to as a multimedia classroom). Here is a brief introduction to its construction and use. 1. Formation 2. How to use 3. Skills to be used in making special courseware suitable for it 4. Conclusion Modern shave brushes are similar in appearance, composition and function to their centuries-old predecessors. Although a variety of different materials are still used to fashion shave brush handles, synthetic handles of nylon, urethane or plastic are the most common even with the most expensive shave brush manufacturers. Benefits of synthetic handles include a lesser chance of breakage and resistance to damage by moisture.
A shave brush's price is usually determined more by its bristle load than any other factor, except for brushes with very exotic handles. The most expensive brushes often use exotic materials in the handle. The bristles are fixed together into a knot that is installed into the handle. The best quality brushes are hand knotted. Badger and boar brushes are the most commonly found animals used for Shaving Brush fibers. Badger species include the Eurasian and the hog badger.
Badger brushes are often referred to as two band, or three band. Perhaps all badger hair fibers have three bands, but those used in the brushes conceal the lighter bottom band. Nonetheless, both types of bristle make desirable shaving brushes. Lower-quality brushes are often machine made and the bristles may be trimmed, resulting in sharp, prickly tips.
Best badger are brushes made with the finer and more pliable hairs from 20 - 25% of the badger's body. It is longer in length and lighter in color than 'pure' badger hair. A 'best' badger brush is more densely filled with hair than the 'pure' badger brush and will produce a correspondingly greater lather. However, some wet shavers argue that the variance between the quality of a 'pure' and a 'best' badger brush is negligible. Best badger and better quality brush hairs are often fit so that the ends do not have to be cut to shape.
Synthetic shave brushes, most often made using nylon bristles, are available in a range of prices and gradations in quality. Comparable to traditional shaving brushes, synthetic fiber brushes can quickly create a rich lather using relatively little shaving soap or cream. The synthetic fibers dry faster than natural hair and are less sensitive to everyday use.
Nylon Hair Shaving Brush,Shaving Brush Head,Beard Shaving Brush,Acrylic Shaving Brush Head SAMINA FORAM (SHENZHEN) CO., LIMITED. , https://www.saminamakeuptools.com
Keywords: multimedia classroom, LCD TV, use
Just add another 47-inch LCD TV in the ordinary classroom. The TV requires a USB interface (that is, it can be inserted into a U disk), and can play pictures, audio, and video files on the U disk. In fact, 47-inch LCD TVs currently on the market in China generally have these functions, and the price is around 5,000 yuan.
The use of a multimedia classroom consisting of a large LCD TV alone is very simple:
1. When preparing a lesson, the teacher copies the relevant files of pictures, audio and video that they want to play on the TV during the lesson to the U disk.
2. During the class, the teacher turns on the TV, plugs the U disk into the USB interface of the TV, and then sets the signal source of the TV to "USB", and enters the U disk to save the pictures, audio and video files Related folders.
3. According to the teaching needs, the teacher can make the TV play relevant pictures, audio and video files on the U disk in time. So far, a large LCD TV has realized most practical functions of the multimedia classroom. Such a multimedia classroom is very practical, low cost, and very valuable for promotion.
1. Generate courseware produced by commonly used slideshow production software (such as Microsoft PowerPoint) into pictures that can be played directly on the LCD TV.
Most teachers are already familiar with PowerPoint slideshow production software, and they often use it to create multimedia courseware. Many teachers download a large number of such courseware from the Internet, but such courseware cannot generally be played directly on ordinary LCD TVs. Such courseware (hereinafter referred to as courseware) can be converted into individual pictures, audio and video files to be played on ordinary LCD TVs. The specific method of generating related image files is as follows:
(1) Run Microsoft's PowerPoint system on the computer.
(2) Open the courseware in PowerPoint state.
(3) Execute the [Save As (A)] function under the [File (F)] menu, a window named "Save As" pops up, enter the name of the folder used to save the image file to be generated in this window, and "Save Type" is selected as "JPEG File Exchange Format", click the [Save] button, a new dialog box pops up, select [Each Slide (E)] or [Only Current Slide (E )] Button, you can export all the pictures from the courseware or only the current slide.
(4) The picture generated in the previous step can be directly displayed on the LCD TV, but it does not necessarily allow the LCD TV to be displayed on the full screen, because the size of the picture in the picture file just generated and the LCD TV The physical resolution of the screen is inconsistent. The solution to this problem:
Method 1: Use the [Drawing] tool that comes with Windows to adjust the size of the picture just generated. The specific operations are as follows:
â‘ Run the [Draw] tool that comes with Windows on the computer. â‘¡ Open the image file that needs to be resized in the [Draw] tool state.
â‘¢ Execute the [Stretch / Twist (S)] function under the [Image (I)] menu, a window named "Stretch / Twist" pops up, and in this window, "Horizontal (H)" and "Vertical (V)" will be displayed. "Enter the appropriate data in the two item fields, click the [OK] button, the image file size will change immediately, and finally execute the [Save] operation.
Method 2: Set the resolution of the exported picture of PowerPoint to be consistent with the physical resolution of the LCD TV screen used, that is, modify the resolution of the exported slide by adding a new registry value for PowerPoint. The specific method can be found on the website: http://support.microsoft.com/kb/827745. (Warning: Improper use of the Registry Editor may cause serious problems, and it is likely that the operating system needs to be reinstalled.) This method is more complicated and requires higher settings for the computer operation level of the setter, but the computer settings After a good time, there is no need to adjust the size of the pictures exported by PowerPoint, and the subsequent operations are easier.
(5) Copy the generated and adjusted picture files to the U disk for use in class. Before copying the picture file to the USB disk, you should pay attention to modify the picture file name on the computer and execute [by name] on the computer to rearrange it. The order of playing the picture files on the LCD TV is according to the order of the physical positions where the picture files are stored on the U disk, rather than the usual name order. If there are less than 10 pictures saved in the same folder on the U disk, the order of the file names automatically generated by PowerPoint is in accordance with the requirements. The order of the LCD TV when playing these pictures is the same as the slides in the courseware. The playback order is the same. If there are more than or equal to 10 pictures saved in the same folder on the U disk, the order of the LCD TV when playing these pictures is: [Picture 1] → [Picture 11] → [Picture 2] → [Picture 21] → [ Picture 3] → [Picture 31] ... instead of the sequence we imagined: [Picture 1] → [Picture 2] → [Picture 3] ... [Picture 10] → [Picture 11] ... The solution to this problem: Rename [Picture 10] to [Picture 19] to [Picture A0] to [Picture A9]; rename [Picture 20] to [Picture 29] to [Picture B0] to [Picture B9], and so on.
2. The animation and dubbing in the courseware are generated as audio and video files that can be played directly on the LCD TV.
Generally, Flash and other types of animations in conventional multimedia courseware cannot be directly played on ordinary LCD TVs. Animation files of this format must be converted into separate audio and video files (usually in JPEG format). The specific method is as follows:
(1) Install and run the screen capture tool Snaglt on the computer, select the two function options of recording and recording, drag the mouse to further select the screen area of ​​the desired recording, and click the [OK] button to start the screen Record in the corresponding area.
(2) Run Microsoft's PowerPoint system, open the courseware, play the animation, and the animation will be recorded.
(3) The animation playback ends, stop recording, and save the disk. At this point, the animation file has been converted into a common audio and video file.
(4) Copy the generated audio and video files to the U disk for use.
To sum up, the plan to build a multimedia classroom by a large LCD TV alone is feasible. Ordinary teachers can generally master the use skills of such multimedia classrooms through the above introduction. In the school where the author teaches, there are already many such multimedia classrooms, which teachers all like to use, and they are satisfied with the results. After more than a year of actual use, this kind of multimedia classroom is indeed economical and practical, and it is worth promoting. We sincerely hope that there can be more primary and secondary schools, and more students can enjoy the benefits of using multimedia technology for teaching.
References [1] Fang Qigui. Multimedia CAI courseware production [M]. Beijing: Tsinghua University Press, 2004 