Embodiment
The restriction of time, region has been broken in remote teaching, has made full use of outstanding qualified teachers' strength, is utilize network to carry out the interactive mode teaching pattern that integrates voice, image, data of distance learning.
The present invention is a kind of teleeducation system and method thereof, it can extract the exercise data automatically, generate the complete teacher's end and the interactive education system of student's end, at first by explanation system of the present invention among Fig. 1, this figure is the modular structure figure of the instructional template carried of the present invention, as shown in Figure 1,exercise editor module 120 links to each other withexercise database 110 with student'sstudy module 130, in order to the teacher to be provided the editing operation to exercise, and the student practises the exercise in the database, student'sstudy module 130 is connected with adifficult mark module 150, make the student in the process of exercise, difficult exercise can be added bookmark, as a mark, thereby must make mistake the exercise tabulation, improve and give teacher's reference.This student'sstudy module 130 also is connected with anerror statistics module 140, and it can draw student's practice result, calculates student performance, and carries out statistics such as rank on merit.The function of each module is described in detail as follows:
(1) theexercise database 110, in order to the storage exercise, learn to use for teacher's explanation and student, and this exercise content can be upgraded at any time.This exercise database can store exercise, also can be the empty storehouse of a structural integrity, imports at any time for the teacher.
(2) theexercise editor module 120, and it carries out editing operation in order to this teacher end to be provided to the exercise in this exercise database, operations such as the teacher can import the exercise in theexercise database 110, revises, deletion.The teacher can classify in exercise, is divided into exercise exercise and test exercise etc.If the exercise exercise, then the student can freely extract and practise, if test exercise, is then determined the time of disclosure of this exercise by the teacher.The student when selecting exercise, not ostensible certain take turns the exercise system and can provide special sign, if student's strong point, then system's refusal.
(3) student'sstudy module 130, in order to extracting the exercise in this exercise database, and this exercise shown that the student learns according to this exercise and tests, and draws test result simultaneously to this student's end.
(4)error statistics module 140 is added up in order to the test result that this student is held, and is marked difficult exercise according to this statistics, in the time of the statistical test result, can also calculate student's achievement according to student's mistake topic number.
(5)difficult mark module 150, it links to each other with this student's study module, in order to receive the difficult exercise of student's mark.
(6) key todifficulty module 160, it sets up teacher's end and being connected that the student holds, and carries out the activity of giving lessons, and the teacher can explain at this difficulty exercise simultaneously, answer student's query.For teacher and student set up the chamber of answering questions on the line, carry out the video/audio communication.Comprise that the teacher makes the database of answering questions according to difficult exercise, offers the student with this database of answering questions and holds demonstration.Described key to difficulty module also comprises an interactive electric whiteboard.
As shown in Figure 2, this figure is the structural drawing of the embodiment of the invention, and native system can also comprise amember management module 170, in order to registration that teacher and student are provided and land authentication etc., all operating rights is monitored.Key todifficulty module 160 and then comprise a teachers' instruction unit 190 is in order to one of to realize between the teacher and student education activities.The user carries out function selecting by after the authentication, and function selectingmodule 180 can be selected to enter learning process or enter the teachers' instruction process.
Above-mentioned exercise database also is connected with an exercise generation module, in order to automatic generation exercise, comprising: a structure setting module, it is in order to set up corresponding this exercise database structure according to the teaching needs.One interface generation module, it generates corresponding user interface in order to according to this exercise database structure.One input receiver module, it links to each other with this interface generation module, in order to receive the exercise data of teacher by this user interface input.And an exercise data generation module, in order to this content of courses is stored in the relevant position of this exercise database.
Then, by Fig. 3 flow process of the present invention is described, this figure is the operation workflow figure of the remote teaching method carried of the present invention, and be described as follows: at first the teacher edits the exercise data, and this exercise is stored in the exercise database (step 210) described input, modification, the deletion action of being compiled as.In this exercise database, capture an exercise then, be sent to this student's end (step 220), the student learns, tests according to this exercise content, mark difficult exercise (step 230) simultaneously, carry out error statistics according to this test result, and marking difficult exercise (step 240) according to this statistics, the step of error statistics also comprises according to error statistics, calculates the step of this student performance.Set up at last on this teacher end and the line that this student holds and be connected, the teacher explains (step 250) to this difficulty exercise.
Wherein automatically generate and be applicable to that the student learns and the teacher explains in the process of exercise database of use, at first set up this exercise database structure, generate corresponding user interface according to this exercise database structure, the teacher is by this user interface input exercise data, system accepts this exercise data, and it is stored to the relevant position of this exercise database.After the exercise input, the teacher can edit arbitrarily exercise, if the teacher thinks that a certain exercise of taking turns can be used as test, the teacher edit import in the exercise module a certain take turns exercise after, whether openly system prompt " epicycle exercise " supplies teacher's selection.The student when selecting exercise, not ostensible certain take turns the exercise system and can provide special sign, if student's strong point, then system's refusal.The teacher need not send to a certain exercise of taking turns of student, and the student can practise by the network selecting exercise voluntarily.
Wherein above-mentioned teacher explanation can connect for teacher and student are set up on the line, carries out the video/audio communication, also can be the interchange that realizes teacher and student by an electronic whiteboard.Concerning the student, just as having entered same classroom.The teacher gives lessons, answers questions, deals with problems to the student, a thousand li but both can be separated by.The student hears and sees teacher's teaching by screen, but also Remote the other side's the pick-up lens situation of on screen, watching the classroom at any time of teacher, and the student in classroom can also state one's views, and launches seminar.Teacher student can cooperate to finish the calculation of examination question by interactive electric whiteboard.
Be example with the multimedia teaching below, the present invention is described in detail.
See also Fig. 4 a to Fig. 4 r, be the interface synoptic diagram of the embodiment of the invention.Wherein Fig. 4 a to Fig. 4 d imports exercise interface synoptic diagram.Instructional template of the present invention, teacher and student at first will register, and log on system then, and system's demonstration is landed interface shown in Fig. 4 a, and the prompting user inputs information such as name, password, subject.Behind the selected subject, system calls in used all symbols of this subject automatically.If same teacher imports different subjects or same subject has different teacher's inputs, system is all approved, but name can not be simultaneously identical with subject.To select input teaching explanation exercise still be that the student practises exercise in prompting then, shown in Fig. 4 b, teaching explanation and student practise both must and only optional one, select any after, its underpart content is activated, the teacher can remake further selection.If select to revise old examination question, then can eject a dialog box again, further select to revise the examination question which is taken turns; If select deletion or empty after examination question determines, " whether confirming to delete/empty " will be pointed out once by system, after finishing, still get back to this interface.After deleting all exercises of a certain round, all afterwards wheel number of times shift to an earlier date No. one automatically, still series arrangement.Shown in teaching explanation exercise input interface Fig. 4 c, during the input exercise,, then can click " insertion symbol " button, access the symbol frame and select if there is symbol to need input.Whether whether " have for select answer (at multiple-choice question) " and " proceed step by step analysis " preceding a choice box, behind the selected choice box, for selecting the content under answer and the substep analysis to be effective status; Otherwise it is invalid.After choice box was selected, alphabetical A and " the 1st step " were effective status automatically, and later letter and the later printed words of the 2nd step of B do not manifest.For selecting under the answer, click alphabetical A (can be designed to eject an input frame), can import answer A, after A has imported, press Next button, letter b promptly appears, can continue to import answer B, import each answer successively, by OK, finish after finishing for selecting answer promptly to import.Wrong as if the exercise question input, select to revise button, then utilize " next one " and the Next button to select answer and analytical procedure to make amendment one by one to supplying.Click " deletion " button, then delete this subject, after this subject deletion, the sequence number of inscribing is later arranged forward automatically.Select " importing student's exercise ", then eject choice box, inquiry " imports to which road exercise of which round ", after determining, current topic can be imported to requiring the position.Exercise could only import also in the round of practising without any a student, and " this round exercise was practised otherwise system reports an error! ".If this topic is inserted into the exercise centre position of a certain round, then exercise sequence number thereafter is backward wrong one automatically, still series arrangement.If in student's exercise, this round is also set up, system prompt " this round is also set up, and whether is docile and obedient preface and sets up new round " then, select " determining " after, the topic of remittance is positioned over first of newly-established last round and inscribes.If this problem has exceeded placement scope (totally 15 inscribe as this round, and require to put on the 18th topic), then system ejects prompting frame " this round is totally 15 topics, whether is positioned over the 16th and inscribes ".Forbid to import unallowable instruction digit in the input process, as negative value, decimal, letter etc., otherwise system reports an error.If in the round of input the score value setting is arranged, then system ejects dialog box before importing exercise, requires to insert this subject score value, otherwise will not import.If newly set up a round, then system follows and asks, whether needs to be provided with score value, and selection is inserted score value after being, then all topics of this round all are defaulted as the score value setting must be arranged; Otherwise all topics all do not have the round setting.Select " a last topic " " next topic " button, can enter a topic, next topic, edit, revise.Carriage return after the input topic number then can directly enter this topic and edit in the square frame of " go to topic ", if the input topic is number wrong, then system ejects dialog box prompting " not having this topic ".Click " finishing " button, all exercise inputs finish.Eject a dialog box this moment, whether system interrogation " enters the input of next round exercise." (shown in Fig. 4 d).If the user selects " modifications " button, then can be to intact one the taking turns exercise and make an amendment of firm input, system is positioned at epicycle first automatically and inscribes.Select " YES ", finish the epicycle examination question, enter next round examination question input interface.Select " ESC ", system withdraws to the last layer interface.
The student practises the exercise input interface and the teaching explanation page is basic identical, does not exist together for being shown as " student practises input " printed words and nothing " remittance student exercise " button in the state area.The teacher practises in the exercise analysis content not being set the student, so two selector buttons are set in the substep analyzed area, one is " whether the explanation of analysis is arranged ", and two are " whether doing substep analysis ".Increase the correct option district at the page under the answer for selecting, in this zone, import correct option by the teacher.For selecting many " score value " choice boxs under the answer, after the selection " score value ", there is an input frame to be activated thereafter at the page, inserts score value and get final product.Do not select " score value ", show that this topic do not establish score value.Do not insert the score value number if select " score value ", then system prompt is made mistakes.After " score value " if of first topic is selected, then this round thereafter the score value of all topics all be defaulted as selected state, and immutable and must insert score value.
See also Fig. 4 e to Fig. 4 h, be each interface synoptic diagram of teaching explanation.After entering the teaching explanation module, subject and round occur and select drop-down list (shown in Fig. 4 e).After selecting " determining ", enter teaching explanation main interface such as Fig. 4 f, press the Back button, then system returns to and selects the page (native system homepage face).Fig. 4 g is the analysis explanation page that enters specific to a certain topic, also is the answer interface.In main interface, behind the click numerical key, be and confirm to enter the answer interface.In this interface, answer directly provides, and begins to be sky and analyze the explanation content.Carriage return after the input topic number in the square frame of " go to topic ", then system leaps to this topic.Press " analysis " button, first step content (, all the elements of explanation then directly occurring analyzing) occurs analyzing if not substep is analyzed.Press " modification " button, then system ejects dialog box, requires input name and password, has only qualified the making amendment of importer's (being the teacher).Confirm errorless after, can change to this topic, revise finish after, as long as press " last one inscribes " " next topic " and the Back button, then system will revise content automatically and store.Press the Next button, analyze each steps in sequence and occur.If one page shows that inadequately then certain step aft section is shown to down in one page automatically, but this moment, following one page can't be seen.If the 2nd the step integral body all need to be presented at down in one page, then press the Next button after, " next step " comprises the function of " following one page " automatically.If not (above stratum step by step layer depth is gone into explanation, and then the Next button is disarmed state, and " the 1st step " printed words do not occur.) press the button of " page up " " following one page " after, system's automatic page turning.This page-turning function only limits to the answer interface, and can not turn back to main interface.After pressing " last one topic " " next topic " button, then system can be on the answer interface enters automatically the answer interface of a topic, next topic.Press the Back button, system turns back to main interface.After the topic of this round is finished, click " next topic " button in the page of last problem of this round, then system ejects dialog box (shown in Fig. 4 h).Dialog box shown in this figure must and can only be selected wherein one.Take turns wheel for inputting number of times in the square frame in which enters, can directly enter during this takes turns; Also can select to return to epicycle and continue explanation, system will be positioned on first topic of epicycle automatically.
See also Fig. 4 i to Fig. 4 m, for the student practises each interface, enter student's exercise module after, dialog interface appears shown in Fig. 4 i, the rear portion adds the project of three asterisks must fill in, otherwise system sends miscue.Wherein student name does not allow repetition.Teacher, subject and round are drop-down choice box, and its subject classification and wheel number are definite when a certain definite teacher imports exercise.If this three's disunity, then system prompt mistake when pressing " determining " button.After pressing " determining ", enter the student and practise main interface shown in Fig. 4 j, this interface has two kinds of purposes: an exercise interface as new round, and the student starts anew to practise; Two for the topic student of this round had done, and entering this round can make an amendment again.The exercise page as new round: each not special provision of round full marks divided number average can become full marks arbitrarily at 100 minutes.The free timing of this exercise interface, timing only are the time used when practising this round first.Input " go to is to the topic " back carriage return can directly enter this topic." page up " " following one page " button is the content setting at the answer district, supreme, the nextpage of page turning." last one topic " " next topic " button can enter/next topic in." do again afterwards " and " cancellation after do " is when button begins effectively/disarmed state again.If this subject temporarily can not done, hope is considered this topic after finishing other topic again, then clicks " doing again afterwards " button, and then this topic deposits in " doing again afterwards " exercise.After a certain topic deposited in " doing again afterwards " exercise, this button became disarmed state, " made " button simultaneously after the cancellation again and was effective status (these two buttons can be designed to a shift knob)." adding key to difficulty " and " cancellation key to difficulty " is when button begins effectively/disarmed state.Explain by teacher if wish this subject, then click " adding key to difficulty " button.After a certain topic deposited in " key to difficulty " exercise, " adding key to difficulty " button became disarmed state, and " cancellation key to difficulty " button is effective status (these two buttons also can be designed to a shift knob) simultaneously.After entering a certain topic, the student can freely carry out answer or answer and revise.After clicking the Back button, system directly returns to system and selects homepage.If after finishing last topic of a certain round, click " next topic " button, system ejects dialog box shown in Fig. 4 k, after pressing " determining ", then enter the exercise page, practise all and be saved as topic for " doing again afterwards ", system navigates on the topic of first in " doing again afterwards " exercise automatically, the ascending ordering of sequence number that all topics in it are arranged in former round by former topic.After if this subject is made, can be by " doing again after the cancellation " button.Untitled in " if doing afterwards ", then this dialog box does not occur again.After pressing " Esc ", then enter dialog box as shown in figure 41.This dialog box must and can only be selected wherein one.Take turns wheel for inputting number of times in the square frame in which enters, can directly enter this and continue exercise in taking turns or make an amendment; Also can select to return to epicycle and make an amendment, system will be positioned on first topic of epicycle automatically.Press " determining " button in this dialog box after, can declare topic according to every topic score value, system ejects the score dialog box before next step task of response, and score is presented at the page lower left corner when opening the exercise of this round once more.Press " determining " button in the score dialog box after, system enters next step.If do not establish score value in the exercise of this round, then directly enter next step, and the score in the page lower left corner be disarmed state.The score value statistics only limits to this round and is exercise for the first time, and modification afterwards is impact fraction no longer.Press then all exercises made of this round or revise and all disregard of " Esc " key, the topic that adds key to difficulty is also all disregarded, and is equivalent to not enter this round, and system retreats to the selection homepage.This round is as entering once more, carries out exercise when revising the page, and the fill out answers district changes to shown in Fig. 4 m, in the frame of one's respective area, and " answer " selected answer during for answer first, this answer is relevant with this round score, so can not change.This subject is answered and is staggered the time, and allows the student to change answer once more, after change finishes, presses " declaring topic " button, knows promptly whether the answer after the change is correct, and whether correct the bottom provide answer the sign after the change.If incorrect, can proceed change.
See also Fig. 4 n to Fig. 4 p, be the key to difficulty interface, enter the key to difficulty module after, the page shown in Fig. 4 n appears, at this interface, Faculty and Students all can enter this module with name and password.Subject is selected definite course classification of having imported in the drop-down list.Interface the latter half is two group selections, and every group selection all must and can only be selected one.If select " difficult by the round answer ", then " which is taken turns " thereafter is activated, and inserts the wheel number of times in square frame, after determining, directly enters this and takes turns.Do not fill out the wheel number of times in the square frame, then system default is for being the first round; Fill out mistake, then when pressing confirming button, system ejects prompting frame and reports an error, and if necessary, total how many wheels can be pointed out by system, and the round of inserting goes beyond the scope.After finishing selection, press " determining " button, can enter respective page.Do not meet item as if finding by the alternative condition search, then system provides corresponding prompt.Promptly withdraw from by " ESC " button to main interface.
The key to difficulty main interface is shown in Fig. 4 o, if select " difficult by the error rate answer " (face is selected " all topics of each round " on the previous page, then has only " how many topics altogether " in the state area, and does not have " epicycle " two words).Click " exercise error list " button, then arrange from high to low, as following table by exercise mistake number.
| Sequence number | Former round | Former topic number | The mistake number | The exercisenumber | Error rate | |
| 1 | 5 | 8 | 14 | 20 | 70% |
| 2 | 5 | 3 | 12 | 20 | 60% |
| 3 | 5 | 11 | 9 | 20 | 45% |
| 4 | 5 | 7 | 5 | 20 | 25% |
In the square frame of go to topic, insert numerical value, this numeric representation is the sequence number in " exercise error listing ", after the carriage return, enters in the topic of a certain sequence number representative.
If select " all topics of each round ", then " former round " hurdle in " exercise error listing " is shown as the numerical value of each round, and " exercise number " also differs and establish a capital identically, but this table is still arranged from more to less by wrong number.
If certain is inscribed some students and does not do, answer is empty, then still counts in the wrong number.
If the wrong number of certain two topic is identical, then sort from high to low by error rate; If error rate is identical, then sort by former round is ascending; If former round is also identical, then by number ascending ordering of former topic.
In the key to difficulty main interface: " the 1st topic (mistake number: 14 people) ", " the 1st topic " refers to first topic of arrangement in " exercise error listing "." 8 " in the exercise input field represent that this topic is the 8th topic in former round; This topic is positioned at the expression of the 5th round, is shown in the state area of top.The correct option zone shows the correct option of this topic.In the analytical procedure zone, click " analysis " button, then show the first step; " the Next button is not disarmed state simultaneously for layer by layer deeply " step analysis, the full content of display analysis then if having.If do not analyze content, then behind click " analysis " button, system prompt " does not have the content of analysis "." modification " and " deletion " button has only input exercise person (being the teacher) to have the right to use, and student's using system can be pointed out.Click " modification " button, then the teacher can make amendment to exercise, answer and analysis content.The content of revising directly has influence on the former topic of former round.Click " deletion " button, then whether system prompt " confirms deletion ", and after the affirmation, then this topic is only deleted from key to difficulty, and the former topic of former round still exists.After clicking the button of " on/next topic ", enter/next topic in.When to first topic or last when topic, " on/next topic " button is disarmed state.Click the Back button, system returns to main interface.When deleting a certain round or a certain topic or emptying all exercises in other module, corresponding exercise is also deleted thereupon in the key to difficulty.
After clicking " OK " button, interface shown in Fig. 4 p then appears.Two group selections of this option interface, every group selection all must and can only be selected one.If completed key to difficulty is positioned all topics of each round, then second group of option of this choice box " 1. enters next round " and is disarmed state.Determine that system retreats to each module main interface after " 5. withdrawing from "." if it is difficult to press bookmark storage answer ", then the state area literal changes to " it is difficult to press bookmark storage answer ".Right-hand button is " a bookmark storage list ", and concrete form is as follows:
| Sequence number | Former round | Former topic number | The bookmark number | The exercise number | Thebookmark filling rate |
| 1 | 5 | 8 | 14 | 20 | 70% |
| 2 | 4 | 5 | 12 | 18 | 67% |
| 3 | 1 | 2 | 9 | 22 | 41% |
| 4 | 3 | 9 | 5 | 25 | 20% |
Above table is to sort by bookmark storage number, if the bookmark number is identical, then presses the ordering of bookmark filling rate; If filling rate is identical, then by the former minor sort of taking turns; If former round is identical, then by number ordering of former topic." mistake number: 14 people " changes to " bookmark storage number: 14 ".
Fig. 4 q and Fig. 4 r are information list interface synoptic diagram, enter the information list module in the main interface after, dialog box appears shown in Fig. 4 q, select a certain after, enter corresponding forms by " determining " button, withdraw to master routine by the Back button.The information about firms table is as follows:
| Totally 5 teachers totally 5 students totally 5 subjects |
| Sequence number | Name | The academic title | Subject | Thewheel number |
| 1 | Mary | The teacher | English | 3 |
| 2 | Chen Qian | The teacher | Mathematics | 5 |
| 3 | Chen Qian | The teacher | English | 7 |
| 4 | Li Yan | Theteacher | Physics | | 8 |
| 5 | Wang Fei | The teacher | Mathematics | 6 |
| 6 | Zhao Yan | The teacher | Chemistry | 5 |
| 7 | Linda | The student | English | 3 |
| 8 | Linda | Thestudent | Mathematics | | 8 |
| 9 | Linda | The student | Physics | 3 |
| 10 | Linda | The student | English | 7 |
| 11 | Rose | The student | English | 5 |
| 12 | Li Dan | The student | Mathematics | 0 |
| 13 | Li Dan | The student | English | 3 |
| 14 | Yang Xin | The student | Physics | 6 |
| 15 | Yang Xin | The student | English | 6 |
| 16 | Zhou Jie | The student | Mathematics | 11 |
Wherein:
(1) top line is listed overall information.
(2) teacher comes the front all the time, and the student comes the back.
When (3) being all teacher or student, pressing the Chinese phonetic alphabet sequencing of name and arrange.If english name, then alphabet sequence is successively arranged.English name comes before the Chinese name.
(4) if the teacher, the wheel numerical table that is indicated shows the wheel number that this teacher sets a question; If the student, the wheel numerical table that is indicated shows that this student does the wheel number of topic.
(5) same teacher can go out different sections purpose topic, and same student can do different sections purpose topic, by each section's purpose Chinese phonetic alphabet sequencing ordering; If a certain subject teacher represents this Course in English with English when input, then the subject of representing with English comes before the subject of Chinese.
(6) if same subject is represented title with the Chinese and English dual mode, then system default is for being two subjects.
(7) if different teachers goes out same section purpose round topic, as mathematics, two teachers go out 5 respectively and take turns and 6 take turns topic, and then mathematics wheel number is total up to 11 and takes turns, take turns in several hurdles the statistics mathematics that the student did wheel number for this student does the summation that two rounds that teacher went out are inscribed, be 11 to the maximum and take turns.
(8) click " subject " two words, then all data can be resequenced by subject, but the teacher still comes before the student.
Enter the interface that occurs behind " examination result " option shown in Fig. 4 q, selection is the topic of which round of which subject of going out of who teacher, after determining, enters summary.The Back button is back to information list module main interface.
Summary, as follows:
| The teacher: Li Yan physics the 5th is taken turns and totally 15 was inscribed full marks 125 minutes |
| Sequence number | Name | Student number | Wrong topic number | Thebookmark number | Score | |
| 1 | Linda | 003 | 5 | 3 | 75 |
| 2 | Rose | 008 | 2 | 4 | 110 |
| 3 | Li Dan | 014 | 4 | 6 | 98 |
| 4 | Yang Xin | 006 | 4 | 5 | 94 |
| 5 | Zhou Jie | 009 | 7 | 3 | 69 |
Above table is pressed the name ordering, and rule and information about firms epiphase are together.After name, student number, wrong topic number, bookmark number, the score, then all data all can sort again by the classification of selecting in this table of click.
After entering, the dialog box of dialog box such as summary appears, after determining, and wrong topic summary sheet, as follows:
| The teacher: Li Yan physics the 4th is taken turns totally 5 topics and is done the topic total number of persons: 12 |
| The topic number | Wrong topic number | Thebookmark number |
| 1 | 2 | 3 |
| 2 | 4 | 3 |
| 3 | 1 | 2 |
| 4 | 3 | 4 |
| 5 | 5 | 6 |
This form is number ordering in order, if with after wrong topic number, the bookmark number in this table of click, then all data all can sort again by the classification of selecting.
The present invention promptly can be used as remote teaching, also can be used as the teacher and arranges with hall teaching materials (it can save edition book time) and to student's exercise.A class can unify to use a cover software, and a teacher is if teach a plurality of classes simultaneously, and if necessary, its exam pool content can copy in many cover softwares.By network, the teacher can be transferred to the student as operation with off-the-shelf exercise, after the student finishes, returns to the teacher.The teacher need not correct students' papers, and can count all student performances and data on next class.Thereby be more convenient for the use of Faculty and Students.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.