Chemistry teachers and multimedia courseware

Abstract: Reform in the deepening of Chemistry has been inseparable from the multimedia courseware, how to make use of multimedia courseware for the opportunity to produce multimedia courseware, software, multimedia courseware production of chemicals which, how to download chemistry courseware, reading this will understand.

Key words: time for the principle of making software download

With the rapid development of information technology, computer education and teaching on a variety application. Now many schools have built a campus network, and connect with the internet, constitutes a comprehensive, multi-channel, interactive teaching system. Multimedia has become the field of computer applications in education, the new trend. Multimedia technology refers to the computer as the core, the integrated treatment of text, graphics, images, sound, animation and video and other multimedia information, and that these information Jianli Qi logical connections, to express a richer, more complex Sixiang or method, such teaching information can act on the students in a short time all the senses, so that students produce a profound feeling of unprecedented use of the CAI multimedia courseware is an ideal modern teaching methods. I was a teaching for more than ten years of chemistry teachers, two years active research and studying multimedia technology and its applications, some experience and lessons learned, here are the views of my shallow for colleagues 鍙傝?.

First, the use of multimedia courseware for chemistry teaching time

1, microscopic particle motion. Chemistry is the study of molecular, atomic and extranuclear electron and other particles sports science, and movement of microscopic particles is the meat eyes do not see the hand touched, usually we only have the help of charts and models, through our teachers explain and make students understand. The process of particle movement and change can not fully display, for example, junior chemical decomposition of water, hydrogen reduction of copper oxide and other real experiments have shown that perception can not once and for all junior high school students to master, but with a separate multimedia courseware simulation particles and integration process, it enables students to quickly understanding and acceptance. High school chemistry, crystal structure, organic molecular structure, isomers, cis and trans isomers, chiral carbon hybrid orbital, 蟺-bond, electrolytic cell theory, the original battery principle, elimination reactions, addition reactions, esterification , polymerization, colloid dialysis and electrophoresis, etc., can be used to simulate multi-media courseware. I was struck by the knowledge that the crystal structure, usually the contents of two or three lessons, and now spend multimedia courseware, only one class will be able to fully explain, and works well. Such as sodium chloride crystal lattice in a number of sodium ions, the number of chloride ions, sodium ions surrounded by a distance equal to the sodium ion and the recent number of issues, almost no waste of breath, students will be able to find out.

2, toxic, harmful and can not be completed in a short time experiment. Such as gel electrophoresis, the nature and Production of hydrogen sulfide, CO, SO2, Cl2 and other toxicity.

3, error in laboratory consequences. Such as hydrogen reduction of copper oxide through hydrogen when heated first, add water to dilute concentrated sulfuric acid, sulfuric acid, taken with a Kipp generator system, such as acetylene.

4, the chemical production process of macro-presentation. Contact with the legal system as sulfuric acid, ammonia oxidation and nitric.

Second, for production of chemicals commonly used software, multimedia courseware and function Introduction

Production of multimedia courseware for the chemical commonly used software are: Authorware, Director, Founder Author, Flash, 3Dmax so. I rather like is Authorware, Flash, 3Dmax three kinds of software. Authorware is a powerful mix of media tools, able to text, images, sound, animation, video and other organically combined, and has a wealth of interactive features, all material prepared for later in combination. Flash is one simple and easy-to-plane animation tool for particle motion in the plane to do some demo. 3Dmax is a large-scale software, 3D modeling and animation capabilities are incomparable and are generally used for doing the spatial structure of organic compounds, isomers, crystal structure and other space demanding courseware.

Third, the principle of Multimedia Courseware

Multimedia Chemistry teaching process consists of four elements: teachers, students, teaching materials and multimedia. Four elements of interrelated constraints, forming an organic whole, to achieve satisfactory teaching results, we must correctly handle the relationship between the four elements. According to Piaget's constructivist learning theory: teachers are the organizers of the process of teaching, guidance and knowledge, meaning construction of the helper, facilitator, rather than take the initiative to educate those who teach knowledge; students are active constructors of knowledge meaning rather than passive recipients of external stimuli, the object of inculcating knowledge; materials provided in the active construction of knowledge is the object of the students, not teachers, the content to students; media is the creation of learning situations, students active learning, collaboration, to explore and complete knowledge of the cognitive tools to construct meaning, rather than teachers to provide pupils with the means and methods used.

Thus, CAI multimedia chemistry teaching can not replace the teachers to teach the simple, still have to give full play to the leading teachers and students in the main role, while highlighting the capabilities of multimedia teaching aids. Only deal with the relationship between these four elements in order to correct positioning of Multimedia Courseware in high school chemistry teaching position and role, it is apparent multimedia courseware should follow the following principles:

1, multimedia courseware to highlight teaching points, breaking the difficulty of teaching tools for those who can use common media such as models, charts, etc. need not be used to achieve the display of multimedia courseware. Should handle the use of multimedia courseware for teaching and teaching of traditional media relations, chalk and blackboard is still our teacher's main teaching tool, we should be the crowning touch of multimedia courseware for teaching.

2, can demonstrate the general chemistry class experiment with video or animation can not be replaced. Experimental media is replaced by any other media can not, it can observe the ability of students, ability, analytical skills and teamwork spirit, experiment is the most direct and vivid media, chemistry teachers are not bartering can do experiments and to give up Chuishou to use computer simulation.

3, multimedia courseware should be small "positive conditions" as the main form. Multimedia courseware well, it should be for everyone to use, not for teaching ideas and classroom differences in the structure of conflict. That is a difficult one corresponding courseware, teaching ideas have changed, changed class structure, courseware can still be used, only such courseware will have a strong vitality, will be extended. Many currently on the market in large scale courseware can not be the reason for this.

4, courseware should have good interaction. Some teachers make courseware, it will be a whole class teaching content, teaching procedures, and all woven into the blackboard, etc., in class the teacher simply press the mouse all the way "next" go, although many provincial King, but too little interaction, is still "indoctrination type "effect is not good teaching. Particular type of exercise self-learning courseware, should have good interaction and feedback functions.

Fourth, study the method of multimedia courseware

Secondary school teachers in addition to computer science teachers, generally not familiar with the programming language, so the real programming language courseware directly very little of several software described above does not require its entry-based programming, such as Authorware, which is a kind of icon-oriented programming tools, it is easy to grasp, and to buy an appropriate book, the book's examples were, generally a week or so you can grasp, if expert guidance, can learn a about three days. Of course, handy to be able to comfortably ease to use, but also a lot of practice. Learning generally so other software, including Flash learning time to be shorter, 3Dmax be longer.

5, the source of multimedia courseware

Multimedia is simply the source of two aspects: First, to produce their own, second is downloaded. Through their own ideas and creativity to produce courseware that wisdom is the fruit of their labors, we should be able to produce a good multimedia courseware for the proud. However, completion of possible time constraints, energy limited, the limitation of foreign language proficiency or even entirely by its own end is a small number of courseware produced a large number of courseware also need to go online to download or secondary development. Internet realize sharing of resources, we chemistry teachers should be able to make full use of network resources for their teaching services, teaching and difficult to resolve even with a number of courseware can be found, we need more to absorb, use, improvement and development. Of course, do not forget to hang your own editing software and the Internet for reference and download colleagues, "I am for all, all for one" is common to follow our guidelines.

6, common courseware download site:

1, 2, high school chemistry teaching resources, people to teach web - High School Chemistry 3, CAI teaching - network exchange 4, 5 books forest walk, lotus and other CAI.







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Glibc 2 HOWTO English Version - 1. Introduction

Illustrator plug-in integrated use of (I)

1. Illsutrator Introduction

Adobe is the world's most famous graphic image software companies. Especially Adobe Photoshop 庐, Adobe Illustrator 庐, Adobe PageMaker 庐, and Adobe Acrobat 庐 software, the four known, has become the field of graphic printing industry standard.


Adobe Illustrator is a publishing, multimedia and online images of the industry standard vector illustration software. Whether you are a production line of printing and publication draft of the designers and professional illustrators, the production of multimedia images of the artist, or Internet pages or online content producers will find not only an artistic product Adobe Illustrator tool. The software is issued for your line offers unparalleled precision and control, design for production of any small to large complex projects.


As a well-known image processing software, Adobe Photoshop's sister software, due to previous long-term non-Adobe official agent of domestic firms, so has not been domestic workers in general graphic design emphasis, replaced by the Core's famous drawing software Corel draw. Should be said that Corel draw is very good vector drawing software, which is known to feature-rich, and therefore very familiar with Window for users who are very appropriate. However, as the printing and publishing industry standards, if used in conjunction with Photoshop and then import each other and can not be avoided, the output of the trouble. The real use in the publishing industry standard vector tools are Illustrator and Freehand (Note: Only a very small number of printing and publishing companies use Mac, Corel draw). Why not pop up very early Illustrator, Illustrator earlier mainly due to appear in the Mac professional graphics software, until the introduction from the 7.0 PC version only by domestic users attention more on its high system requirements and expensive professional week over the equipment so that ordinary users stay aloof, it is generally only Europe and the United States and abroad, a large advertising company in Japan only use the software. However, with the PC, the continuous price cuts, configure continuous upgrade in PC, can now also make these professional-level software.

2. Illustrator development

Earlier, Adobe in 1987, when introduced Illustrator1.1 version. The following year, they launched the platform in the Window 2.0 version. Illustrator truly be said to be started in 1988, Mac version on the launch of Illustrator 88. One year after the upgrade to 3.0 on the Mac version, and in 1991 transplanted to the Unix platform. First appeared in the PC platform version of the 4.0 version in 1992, this version is the first version of the Japanese transplants. In the majority of Apple's machines are used most frequently is the 5.0/5.5 version, because this version uses the Dan Clark of the Anti-alias (antialiasing display) display engine, so the original has been a zigzag vector graphics in the graphic display on a qualitative leap! Also made at the interface major reform, style and very similar to Photoshop, so for the old users Adobe is easy to use, no wonder he soon swept the publishing industry, soon launched a Japanese version! The only pity is that there is no PC version release, the majority of PC users when not in use Photoshop3.0 to see her! Taking advantage of golden opportunity, Adobe company immediately in the Mac and Unix platforms launched a 6.0 version. The Illustrator really being aware of PC users in 1997, Version 7.0, Adobe, taken note of the growing might and prosperity of the PC world, right? Both the Mac and Windows platform launch. As the 7.0 version uses a complete PostScript page description language, make the page text and graphics quality of a leap once again. More with her and Photoshop good interchangeability, won the good reputation. The only regret is 7.0 support for the Chinese poor. In 1998 the company launched a landmark version of the Adobe-Illustrator 8.0, Illustrator makes a very good graphics software, Adobe's powerful by virtue of strength, to completely on double-byte languages such as Chinese and Japanese support, adds a powerful The "grid transition" tools (Corel Draw9.0 have corresponding functions, but very poor results), text editing tools, etc. functions, making it dominate the professional vector graphics software dominance. With a sound momentum of 99 years and launched a Chinese language version finished. The latest 9.0 version is also available, I believe that will give users more to come.

3. About plug-ins

We all know Photoshop plug-in is very large, this is one of the main features of the software one. However, we often overlook Illustrator also has a large number of plug-ins, not known it! Illustrator can not only use Photoshop all the bitmap filter itself with a large number of vector filter. And others have developed many powerful filter, here a few more well known the importance of filters:

l CAD Tools: HotDoor company's main product, that is, Illustrator7.0 launched the same year launched CAD Tools 1.0 for Illustrator version. After installing the plug-in will be the main toolbox on the left 4 more tools button, and add four command panel. Main function of the plug to simulate a well-known software AutoDesk AutoCAD, so can quite easily in Illustrator, accurate annotation professional engineering units and dimensions. The powerful, with the plug-in, can avoid the complicated operation instructions to learn AutoCAD. The latest version of the plug-in 2.0, and supports Illustrator7.0 above.

l Transparency: HotDoor another company's main products. After installing the plug-in will be more of a command panel. The plug-in main function is to create blocks of color true transparency, it is not itself the functions of Illustrator (Note: not the blocks of color mixing). The latest version of the plug-in 1.02, and support Illustrator8.0 later. (The latest Illustrator9.0 own transparent feature.)

l KPT Vector Effects: MetaCreations is the most famous one of Photoshop plug-in developers. Of course, the support for Illustrator is also spare no effort! As Illustrator's most powerful third-party plug-ins-KPT Vector Effects inherited KPT always gorgeous interface and powerful features, give the user 13 powerful plug-in. This tutorial is using the most powerful 3D transformation feature! The latest version of the plug-in 1.5, and supports Illustrator8.0 above.

l other plug-ins: Others include Macromedia's FlashWriter, Sapphire Pack, Intense's Curvius 1.2 and Kimbo 1.5, LiveAction, TextureWorks, Panopticum company Array 1.0,3 D Vector PopArt so plug-in, because of limited space, not 11 described in detail!

When you use these plug-ins Illsutrator and together with the drawings, they would find that Illustrator has become extremely powerful, even Photoshop will be overshadowed!

As the Illustrator interface similar to Photoshop, operation is not complicated, generally no problem with the use of basic, in order to reflect the Illustrator's different from other power of vector software, following the combination of Illustrator8.0c, KPT Vector Effects 1.5, CAD Tools 2, Transparency 1.0 and other plug-ins to create a three-dimensional vector gears.






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Change with the TIME

"Green dam" birth is: who won the 41.7 million yuan orders

A piece of paper from the Ministry of Industry and Information Technology (the "Ministry of Industry"), the value of 41.7 million yuan, "order", so Zhengzhou Jinhui Computer Systems Limited ("Zhengzhou Jin Hui") and Beijing Taisho knowledge of the language Treatment Limited ("Beijing Taisho") became famous overnight.

Zhengzhou Jin Hui and Beijing is through the development of a major called "harmful information" of Internet filtering software, were divided got 21.8 million yuan and 19.9 million yuan of the contract value, then, the Ministry of Industry also expected government purchases each of the two companies to purchase the right to use, and for the community free of charge.

Well, so much of "income" why benefit payments attributable to Zhengzhou and Beijing, Taisho? This may be the "harmful information" as the core of a business story.

Winner "life experience"

41.7 million yuan a year to win "contracts big one" in Zhengzhou and Beijing, Taisho Jin Hui, So who exactly? As if only they are two innovative technology companies, all seems too simple.

銆??璁拌?璋冩煡鑾风煡锛屽寳浜ぇ姝ｇ郴鍐呰祫鍏徃锛屾敞鍐岃祫鏈噾涓?000涓囧厓锛屼絾鍏朵腑700涓囧厓涓衡?鐭ヨ瘑浜ф潈鍑鸿祫鈥濓紝娉曚汉浠ｈ〃瀛熶笢璞紝鐢变腑绉戦櫌澹板鐮旂┒鎵?拰鍖椾含楹︾撼鏂版妧鏈湁闄愬叕鍙?涓嬬О鈥滃寳浜害绾斥?)鍏卞悓缁勫缓锛屽瓱涓滆鲍鍚屾椂杩樻槸鍖椾含楹︾撼鐨勬硶浜轰唬琛ㄣ?

Something wrong with that funded the establishment of a large positive McEnery Beijing company is being established in Beijing after the Great had just set up, and according to this reporter know, Beijing Taisho was established in 2000.

The Zhengzhou Jin Hui Hui-Chin Chou, chairman of Chinese Academy of Sciences in the previously served as subordinate party Weishujijian Kehai Group Executive Vice President.

The press information available shows that mandatory pre-installed software containing harmful information made public before the media, the Ministry of Industry has primary and secondary schools respectively, and major PC makers notice requirements in the factory process, mandatory pre-installed the software . Which, by the Ministry forwarded the notice to all primary and secondary schools, clearly defined deadlines for the May 2009.

Investigations on behalf of Beijing Meng Tung Tai Fa Yu-name companies also, such as soft-media video technology Beijing, Beijing Technology & Trade Co., Ltd. McEwing, Beijing Kirsten Telecommunication Technology Development Company Ltd., which Beijing Mai Ningke Trade Co., Ltd. is still in the "suspended" state.

More subtly, Beijing had also great is the branch in Shenzhen Local Taxation Bureau of the taxes on that list, Shenzhen City, Shenzhen National Tax State Tax Report [2008] 4 documents show that Beijing is a large enterprise income tax arrears, Shenzhen Branch total of 5.6322 million yuan.

Interests of the geometry

June 12 afternoon, "China Business" reporter arrived at the nearby People's University, Haidian District, Beijing, Taisho office - Gateway to Science and Technology Building, 7th floor, the company's staff told reporters that Beijing is big here in 2002 office, the office to the total number of about 70 or so.

On the company business license hanging on the wall, a university research centers and many other documents, "Beijing Taisho" message is not obvious, only found on top of the business license. Obviously, "harmful information" in the development of the company is not only a business, but is this a software product development, great is brought to Beijing for a year 19.9 million yuan of cash income.

This reporter has learned that day, the company legal representative of the East Meng Yu is away on business. "This is a commercial activity, and the Government has nothing to do." Zhengzhou Jin Hui, general manager Zhang Chenmin in a media interview said. And figure out "harmful information" software revenue for the two companies the easiest way is to figure out the software development costs.

銆??鏉ヨ嚜涓氱晫鏉冨▉瀹夊叏鍘傚晢鐨勪汉澹〃绀猴紝姝ょ被杩囨护杞欢鐨勫紑鍙戝苟涓嶅鏉傦紝鍏舵垚鏈嚦澶氫笉浼氶珮浜?0涓囧厓銆?The person had also conducted a detailed analysis of the software and found that green bar image recognition software and even using some open source code from the Internet, but according to the Ministry of Industry and publicity of information display, the image part of the recognition by the Zhengzhou Jin Hui is responsible for development.

June 11, Netease technology linked to a news channel also shows that the Green Dam cracked software, technical difficulty is not large, there have been online even crack the password hint that the software tutorial.

The evening of June 10, China Central Television, "Evening News" quoted in the relevant head of the Ministry of Industry as saying that "harmful information" does not monitor users of personal information and online behavior, just filter pornography and other undesirable network information, the software In the PC terminal can also be uninstalled by the user themselves.

But is this a free to uninstall the software, the Ministry of Industry is preparing to government procurement in the form of royalties paid to developers for free installation of society, thus, "harmful information" covered by the outside world as China the highest rate of "genuine software."

銆??鍓嶈堪涓氱晫鏉冨▉瀹夊叏鍘傚晢鐨勪汉澹繕閫忛湶锛岀被浼煎畨鍏ㄨ蒋浠剁殑閿?敭濡傛灉鏄殢纭欢缁戝畾锛屼竴鑸細鎸夌収缁堢鐐规暟鐨勫灏戞潵杩涜瀹氫环銆?Such as Microsoft's windows operating system pre-installed as long as a large enough number of hardware vendors, their prices are not high, typically tens of dollars to several hundred dollars.

Monopoly suspects

Ministry of Industry on June 9 announced the "pre-installed on the computer, Internet filtering software notice the green" after three days, some of the legal profession, academics sent a letter to the State Department and National Anti-Monopoly Committee, pointed out that the notice issued under the Ministry of Industry and alleged violations of "anti-monopoly law," lawyers had also apply to the Ministry of Industry, require information disclosure.

This reporter learned that the State Department sent a letter to two people, media law expert Richard Winter levy system and China Youth Political College professor, well-known lawyer Zhou Ze.

They sent a letter to the State Department's letter stated that the requirements of compulsory pre-installed, alleged misuse of administrative powers to exclude and restrict competition in violation of the "anti-monopoly law" requirement. Kingsoft and other security software now can provide a similar filtering systems and even Microsoft vista preset related functions. MIIT requires a computer preloaded with "harmful information" software, may limit and the exclusion of other similar software operators and "harmful information" software operator competition. Development, production and "harmful information" software similar enterprise software products, shall enjoy the right to fair competition.

"We believe that the greatest current threat to the public is Trojans, viruses and other malicious code, as the aim at the protection of public privacy, technology-based companies, information about what is bad site, we in fact very difficult to do the evaluation." Owns 360 security guards and software butler Qihoo chairman Zhou Hongyi told, "China Business" reporter, green filtering software More parental control by the children's market, rather than the mass market.鍥犳锛屽浗鍐呯煡鍚嶅畨鍏ㄥ巶鍟嗚濡?60銆侀噾灞便?鐟炴槦绛夛紝灏界杞欢鍧囧叿澶囩被浼煎姛鑳斤紝浣嗛兘娌℃湁閽堝璇ョ粏鍒嗗競鍦烘帹鍑轰笓椤逛骇鍝併?

Triggered by a software story, perhaps just begun.







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Switch, router password recovery procedure

鈷?exported to connect the switch console terminal or PC emulation terminal. With no direct connection Modem connection PC's serial exported to the switch console port.

鈷?first hold down the mode key switch panel, and then turn on the power.

鈷?initialize flash.

> Flash_init

鈷?renamed the configuration file containing the password.

> Rename flash: config.text flash: config.old

鈷?start switch.

> Boot

鈷?enter privileged mode.

> Enable

鈷?boot time is already overlooked password.

# Rename flash: config.old flash: config.text

鈷?copy configuration files to the current system.

# Copy flash: config.text system: running-config

鈷?modify password.

# Configure terminal

# Enable secret

鈷?save the configuration.

# Write

Router password recovery procedure

鈷?exported to connect the router console terminal or PC emulation terminal. With no direct connection Modem connection PC's serial exported to the router's console port.

鈷?with the show version command to display and record the configuration register value, usually 0x2102 or 0x102. If you can not use the show version command to obtain prompt, you can view similar to the router to get the configuration register value or try to use 0x2102.

鈷?turn off the router's power supply, and then open.

鈷?the start of the first 60 seconds press Break key, you will see the ">" prompt (no router name), if not see the ">" prompt to show that you did not send the correct Break signal, then you can check terminal or terminal emulation settings.

鈷?in the ">" prompt, type o / r 0x42 in the boot from the Flash memory or type o / r 0x41 in the boot from ROM (Note: This "o" is lowercase letter "O"). Flash and intact if it did not move over, 0x42 is the best setting, because it is the default value, only if the Flash is erased or not installed, use 0x41. If you use 0x41, you can view or delete the original configuration, but you can not change the password.

鈷?in the ">" prompt, type i, the router will restart and ignore its saved configuration.

鈷?set all the questions answered "no".

鈷?at the Router> prompt, type enable, you will enter the Router # prompt privileged users.

鈷?view the password, type show config

Change the password (the password encryption in the case), in accordance with the following steps:

(A) Type config mem copy the NVRAM into memory;

(B) type wr term;

(C) If you have made enable secret xxxx, run the following command: Type config term and then type enable secret press Ctrl + Z; If you have not made enable secret xxxx, then type the enable password, Press Ctrl + Z;

(D) Type write mem to submit to save changes; if delete configuration, type write erase.

鈷?at the Router # prompt, type config term.

鈷?type config-register0x2102, or type the value recorded in the second step.

鈷?press Ctrl + Z exit the editor.

鈷?at the Router # prompt, type the reload command, do not need to do write memory.







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Christmasgift DVD Burner

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Open DVD to 3GP

Open DVD to 3GP is an All-in-One solution to create Mobile Phone 3GP movies from DVDs, TV shows and downloaded videos. The software combines DVD to 3GP Converter and 3GP Video Converter in one package for discounted price. The software is easy to use. It features superb video audio quality and the fastest conversion techniques availabe on the market (Up to 3x faster).

Open DVD to 3GP easy converts all popular video formats such as AVI, DivX/Xvid, WMV, RM, MPG, MOV, MPEG (and many more) videos into Mobile Phone 3GP format. Watch movies on the road. Support all mobile phones with 3GP video capability. The software is very easy to use. It compresses a full lengh movie into small size which can be fitted in a 128MB memory card. Carry your movie theater on the go! Watch movies anywhere, anytime - a new life style.