CN208035768U

CN208035768U - A kind of mathematical studying appurtenance

Info

Publication number: CN208035768U
Application number: CN201820853909.5U
Authority: CN
Inventors: 张翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2018-11-02
Anticipated expiration: 2028-06-04

Abstract

A kind of mathematical studying appurtenance, it is related to a kind of schooling apparatus, drawing blank is equipped on the bottom plate, rectangular coordinate system is equipped on the drawing blank, several transverse and longitudinal intervals slot equal with rectangular coordinate system transverse and longitudinal coordinate interval is equipped on the drawing blank, plug connection has straight line draw part, round drawing part and several punctuate plug-in units respectively in several slots on the drawing blank, and cover board is equipped on the bottom plate top；Pass through the present apparatus, it can realize that student's rapid drawing makes conic section, when being conducive to student's primary learning, compare the comparison study of the translation relation of the variation of quadratic function equation coefficient and corresponding image, the conic section and straight line that the present apparatus is drawn out have accuracy, the position relationship of conic section and straight line can intuitively be shown, the position relationship of conic section is very clear, convenient for Students ' Problem-solving, simultaneously in student in learning process, constantly enhancing makes problem reduction to the avulsion flap of image, is conducive to student's study.

Description

A kind of mathematical studying appurtenance

Technical field

The utility model is related to a kind of schooling apparatus, more particularly, to a kind of mathematical studying appurtenance.

Background technology

Well known, conic section includes ellipse（Circle is elliptical special case）, parabola, hyperbola.Conic section（Secondary song Line）'s（It is imperfect）Unified definition：To fixed point F（Focus）Distance with arrive boning out l（Directrix）The quotient of distance be constant e （Eccentricity）Point track.Conic section belongs to priority and difficulty part, is number two in college entrance examination problem in senior middle school learns Position, often last item answer occurs the most, and through incomplete statistics, it is difficult to have no way of doing it to have classmate's reaction of percent 60%-70%, The relational learning content indigestion of conic section, content is complicated, and students ' interest of study is not high, therefore studies auxiliary student's study The device of conic section knowledge will be widely used, and further student be helped to learn conic section, be learned to improve student Practise effect.

Parabola is one kind of conic section, i.e. circular conical surface and curve obtained by the plane phase of parallel Mr. Yu busbar section. Parabola can also regard quadratic function image as under suitable coordinate transform, and parabola is due to more taking out in present study As, such as quadratic function y=ax in plane right-angle coordinate²The image of+bx+c is by y=ax²What translation obtained；When secondary letter Number y=ax²When only having c to change in+bx+c, the situation of change of quadratic function image；Two-term coefficient a determines quadratic function The opening direction of image and size etc. are that teacher directly tells about on classroom and listened to student, and student is during study, entirely By memorize mechanicalling, it is unable to comprehensive learning, causes student for the understanding of quadratic function image and the relevant topic of quadratic function Excessively writtenization changes a, b, c in quadratic function equation, corresponding quadratic function image change, student study when not The comparison study of quadratic function image change, excessively abstract can be carried out so that understanding not enough, cause student's study relatively difficult, Prevent study from reaching good learning effect.

In conic section learning process, often need to draw image of the conic section in reference axis according to known conditions Distribution situation for analyzing topic, and then is solved a problem, Drawing of Curve whether standard, student will be directly affected to known conditions With, and the guess to unknown condition, corresponding standard cones curve is drawn using known conditions, is had very greatly for solving a problem Meaning, Students ' Problem-solving can be helped, moreover it is possible to which a degree of auxiliary student examines the result that obtains whether correct, for example seeks straight line When with parabolical focus, the homologous thread of mark is correctly drawn according to known conditions, can observe directly straight line and parabolic Quadrant residing for the intersection point of line can directly be found out from image when the coordinate that student finds out is incorrect.

In conic section study, be often related to the synthtic price index of conic section, such issues that include straight line and conic section Position relationship, straight line intersects with conic section, mutually from, it is tangent, according to known conditions draw corresponding conic section with it is straight The image of line, if the position relationship of Image Rendering standard, straight line and conic section is very clear.Study straight line and conic section When position relationship, it is generally converted into the number of research linear equation and circular cone solution of equations, but selection, gap-filling questions are utilized Geometrical condition is solved the easiest with the method for figure-shape combination.

The synthtic price index of parabola and circle is also common topic in examination, and comprehensive strong, difficulty is larger, solves tin class and asks Topic needs the skilled position for grasping parabola and circle relevant basic knowledge and basic skills and Circle in Digital Images and point, line, circle Relationship etc. is idea about modeling in the thought of solving a problem for median year infiltration of solving a problem, is the first step during Students ' Problem-solving, correct to establish Standard picture is very helpful for Students ' Problem-solving and study.

In the study of mathematics conic section, theory study is uninteresting, indigestibility, and students ' interest of study is not high.In study, When still learning foundation theory of either solving a problem, it is be unable to do without the drafting of image, image can help student to learn and deepen basis Theory, Students ' Problem-solving can also be helped and examine required the result is that no correct by accurately drawing the image of conic section.In conic In the study of line, the Image Rendering of curve is particularly important, existing Parabola drawing tool, and focus is in early period position fixing process Cumbersome, positioning is inaccurate, to influence drawing efficiency.In addition to this, existing Parabola drawing tool, function list One, single it can only draw one, straight line cannot be drawn, circle can not be drawn, is not easy to solve circular cone The global question of curve.At present when drawing conic section, there is also many to inscribe, as follows：

1, it when drawing parabola, needs to draw rectangular coordinate system, then divide in the enterprising between-line spacing of rectangular coordinate system, then In the interval described point and line fastened by rectangular co-ordinate, curve when error and line can also occur because of Freehandhand-drawing in complex steps It is unsmooth, it requires a great deal of time, learns for ease of student and understand conic section, currently, a kind of conic section in short supply Plotting unit helps student's study and deepens conic section relevant knowledge and auxiliary Students ' Problem-solving.

2, when conic section learns, teacher directly tells about knowledge point on classroom to listen to student, is not directed to For quadratic function y=ax²A, b, c of+bx+c changes, corresponding quadratic function image change parabola a, corresponding secondary letter Number image change, without the comparison of functional image variation, student is directed to the variation of functional image, memorize mechanicallys, Bu Nengli Inquiry learning is solved, student is not strong for the avulsion flap of image, is unfavorable for the study of student's conic section；

3, the reconnaissance in rectangular coordinate system is needed when drawing parabolical, when student is described with hand, to ensure point Position is accurate, needs to carry out repeated measurement distance using lattice ruler, determines the position of point；When drawing round, guarantee is drawn Image standardization, student need to make to draw circle with a compass, and the determination of the point in the center of circle and the radius of circle also need to measure using ruler, have When compasses loosening can also be not easy to circle drafting；When drawing straight line, it is also desirable to choose two points, be that the slope of straight line is accurate Really, then need 2 positions for ensureing to choose accurate；When drawing image, student needs Reusability compasses and ruler, it is affected very Cumbersome, positioning is also possible to inaccurate；

4, student needs to prepare the apparatus such as toilet paper, ruler, compasses, it is very inconvenient to carry, in daily in drawing image In habit, be easy to happen apparatus leave behind or apparatus lose the case where, give student's learning tape come inconvenient to carry, apparatus and rough draft Paper can also cause student's desktop chaotic when all placing with desktop, desktop is untidy, occupies the area of student writing, is unfavorable for learning It practises and carrying out；

5, using a large amount of foul papers, the waste of resource can be also caused, environmental protection is not conducive to, in addition, pupil drawing can occupy The a large amount of areas of foul papers often use a toilet paper value to draw an image, foul papers are made to cause largely to waste；

6, student is in the engineering of drawing, to ensure that image is consistent with topic, needs each point exact picture, It accurately then needs student to determine distance of the point apart from transverse and longitudinal coordinate repeatedly using ruler for the position of guarantee point, is drawn on class, Student's learning time can be reduced using the plenty of time, being drawn under class then can legal system learning efficiency reduction after class；

7, most of students do not focus on the standardization drawn, the mistake for the result that often causes to solve a problem because Image Rendering is incorrect Accidentally；

8, in the teaching of conic section, teacher often draws various images on class, convenient for student's understanding and conveniently It solves a problem, still, drawing can waste many instructional blocks of time, cause time in classroom that cannot make full use of, and student cannot be when limited In, learn more knowledge.

There is presently no when student learns conic section, auxiliary student draws the device of reference axis, parabola, circle etc., A kind of device of auxiliary student study conic section is studied, helps to promote student's learning efficiency and learning interest, have very big Social value and economic value.

Invention content

In order to overcome the shortcomings of in background technology, the utility model discloses a kind of mathematical studying appurtenance, pass through this Utility model can realize that student's rapid drawing makes conic section, when being conducive to student's primary learning, compare quadratic function system of equations The comparison study of the translation relation of number variation and corresponding image, enhances the avulsion flap to image, promotes Student Mathematics letter The learning interest of number knowledge learnings, blends learning in music, can will abstract, obscure mathematical function knowledge is vivid shows Come, use one's hands and brains and be combined, enhance memory, be convenient for students and profound understanding functional knowledge, greatly promotes student and learn effect Rate makes problem reduction, is conducive to student's study.

The technical scheme for implementing the utility model is as follows：

A kind of mathematical studying appurtenance, including cover board and bottom plate are equipped with drawing blank on the bottom plate, are painted described Figure blank is equipped with rectangular coordinate system, and several transverse and longitudinal intervals are equipped on the drawing blank and are sat with the rectangular coordinate system transverse and longitudinal It marks and is spaced equal slot, plug connection has straight line draw part, round drawing respectively in several slots on the drawing blank Part and several punctuate plug-in units are equipped with cover board on the bottom plate top.

The mathematical studying appurtenance, the round drawing part is made of cylinder A, plug A and buckling groove, in institute It states cylinder A and is internally provided with Scroll, line is equipped on the Scroll, recess is equipped in the sides the cylinder A, in the recess Inner surface is equipped with opening, buckling groove compatible with the recess is equipped on the recess, one end of the line is by opening Mouth is fixedly connected with the buckling groove, and plug compatible with the slot on the drawing blank is equipped in the lower parts the cylinder A A。

The mathematical studying appurtenance, the opening side in the recess of the sides the cylinder A are equipped with and the column The matched sliding fastener of Scroll in body A.

The mathematical studying appurtenance, the straight line draw part is made of cylinder B, plug B and inserted link, in institute State cylinder B and be internally provided with Scroll, on the Scroll be equipped with line, the sides the cylinder B be equipped with opening, the line via The opening of the sides cylinder B is pierced by, and is equipped with inserted link in one end that the line is pierced by, is equipped in the other sides the cylinder B and is inserted with described The compatible slotting ring of bar is equipped with plug B compatible with the slot on the drawing blank in the lower parts the cylinder B.

The mathematical studying appurtenance, the punctuate plug-in unit are made of cylinder C and plug C, at the cylinder C Portion is equipped with plug C.

The mathematical studying appurtenance is equipped with upper cover on the slot top, and the side of the upper cover passes through reset Spring is articulated and connected with slot top side.

The mathematical studying appurtenance is equipped with several card slots on the downside of the drawing blank on the bottom plate, described Several card slot sides on bottom plate are equipped with groove, and white board marker and whiteboard eraser are equipped in the groove.

The mathematical studying appurtenance, the bottom plate are articulated and connected with the cover board.

The mathematical studying appurtenance is equipped with writing whiteboard on the cover inner surface.

The mathematical studying appurtenance, on the upside of the cover board be equipped with up knob, the baseplate underside be equipped with The corresponding lower handle of up knob on the upside of the cover board.

The utility model has the beneficial effects that when learning conic section content the utility model proposes a kind of student, tentatively When study, it can realize and a, b, c in quadratic function equation are changed, the comparison study of corresponding quadratic function image change increases By force to the avulsion flap of image, the learning interest of Student Mathematics functional knowledge study is promoted, is blended learning in music, can will abstract, Obscure mathematical function knowledge is vivid to be shown, and students ' interest of study is promoted, and is convenient for students and profound understanding letter Number knowledge, greatly promotes student's learning efficiency；Auxiliary student fast and accurately draws the images such as parabola, circle, straight line, avoids It is inaccurate because drawing, it influences student and solves the problems, such as conic section correlation using the thought of figure-shape combination, use one's hands and brains and be combined, It enhances memory；The use that a large amount of foul papers can be reduced by way of blank is arranged, avoids wasting, and meets current environmental protection concept Device.

By the way that cover board is arranged, the fastening of cover board realization device when not in use reduces the volume and floor space of device, is convenient for Device folding and unfolding.

By the way that up knob and lower handle is arranged, convenient for device lift and device buckling state opening, convenient for learning Raw use device.

It can be write according to Students ' Demand by the way that writing whiteboard, white board marker and whiteboard eraser is arranged, when writing whiteboard uses and round The formula and equation for boring curvilinear correlation can keep the shape for seeing formula always convenient for student in daily mathematics studying State can assist deepening memory of the student to mathematical formulae, also be avoided that student is unfamiliar with equation, leads to mistake of solving a problem, have Help auxiliary and improves mathematical studying efficiency；Conic section can be related to a large amount of operation in learning course of solving questions, and writing whiteboard is also It can calculate, and can realize the recycling of blank by whiteboard eraser, a large amount of rough draft paper be saved, while economizing on resources With prodigious environment protection significance, moreover it is possible to avoid a large amount of foul papers placements and desktop, cause desktop chaotic, be not easy to learn.

By the way that drawing blank is arranged, required conic section Image Rendering avoids student above when can learn student A large amount of foul papers can be wasted when drawing.By in setting groove, it can be achieved that the placement of white board marker and whiteboard eraser, convenient for taking and Keeping.

By the way that multiple regularly arranged slots are arranged in drawing blank upper surface, formed between slot and adjacent slots away from From equal, play the role of measurement distance, student is not required to reuse support and is repeatedly measured distance in drawing image, ensures point The position of selection is accurate.

By the way that punctuate plug-in unit, straight line draw part, round drawing part is arranged, the accuracy of student's drawing image can be realized, just In students ' analysis topic and guess to topic answer, avoid leading to the deviation of Students ' Problem-solving thinking because of inaccuracy of drawing, with And can realize the quick drawing image of student, while helping student to learn conic section related content, it can be effectively saved With the non-drawing time under class on raw class, it is beneficial to improve student's learning efficiency.

By the way that punctuate plug-in unit is arranged, parabola can be drawn out by five-spot, and multiple parabolics can be drawn out simultaneously Line, realizes that a, b, c change in quadratic function equation, and corresponding quadratic function image change enables student to carry out two in study The comparison study of secondary functional image variation, deepens the degree of understanding of the student for image, is convenient for student's comprehensive learning, convenient for training Support avulsion flap of the student to image.

By the way that round drawing part is arranged, convenient for the drafting of circle, in avoiding tradition from learning, when student draws the image of circle, need The radius of circle and the center of circle of circle are determined with ruler, describes the curve of circle using compasses, and compasses loosening also needs to describe repeatedly, wave Take a large amount of learning time, is unfavorable for improving learning efficiency.

By the way that straight line draw part is arranged, student can be helped to draw straight line, it is accurate that linear position is drawn, and can intuitively react anti- Mirror the position relationship of straight line and conic section, straight line intersects with conic section, mutually from, tangent one act be clear, it is fast convenient for student Speed solves the topic that gap-filling questions and multiple-choice question etc. are not required to calculating process.

By the way that plug A, plug B, plug C is arranged, convenient for round drawing part, straight line draw part and punctuate plug-in unit and slot Cooperation, convenient for the insertion and taking-up of round drawing part, straight line draw part and punctuate plug-in unit.By the way that card slot is arranged, stored in device When, it can block and put punctuate plug-in unit, round drawing part and straight line draw part, convenient for punctuate plug-in unit, round drawing part, straight line draw part Keeping, avoid losing.By the way that Scroll is arranged, it can be achieved that the winding storage of the line used in various images is drawn, convenient for making With convenient for management after use.

By the present apparatus, it can realize that student's rapid drawing makes conic section, when being conducive to student's primary learning, comparison is secondary The comparison of the translation relation of functional equation index variation and corresponding image learns, conic section that the present apparatus is drawn out and straight Line has accuracy, the intuitive and accurate position relationship for showing conic section and straight line of energy, the position relationship one of conic section Mesh is clear, and is convenient for Students ' Problem-solving, while in student in learning process, and constantly enhancing promotes student to the avulsion flap of image The learning interest of mathematical function knowledge learning, blends learning in music, can be by abstract, the obscure vivid exhibition of mathematical function knowledge It shows to come, is convenient for students and profound understanding functional knowledge, uses one's hands and brains and be combined, enhance memory, greatly promote student Efficiency is practised, problem reduction is made, is conducive to student's study.

Description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the inserting slot construction schematic diagram of the utility model.

Fig. 3 is the round drawing part structural schematic diagram of the utility model.

Fig. 4 is the straight line draw part structural schematic diagram of the utility model.

Fig. 5 is the punctuate dongle configuration schematic diagram of the utility model.

In figure:1. up knob, 2. cover boards, 3. writing whiteboards, 4. slots, 5. punctuate plug-in units, 6. bottom plates, 7. rectangular co-ordinates System, 8. drawing blanks, 9. straight line draw parts, 10. round drawing parts, 11. grooves, 12. white board markers, 13. whiteboard erasers, 14. card slots, 15. lower handle, 16. resetting springs, 17. upper covers, 18. Scrolls, 19. recesses, 20. buckling grooves, 21. lines, 22. openings, 23. columns Body A, 24. plug A, 25. cylinder B, 26. inserted links, 27. slotting rings, 28. plug B, 29. cylinder C, 30. plug C.

Specific implementation mode

The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram, Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.

Mathematical studying appurtenance in conjunction with given by attached drawing 1~5 is equipped with drawing blank 8, in institute on the bottom plate 6 It states drawing blank 8 and is equipped with rectangular coordinate system 7, several transverse and longitudinal intervals and the rectangular co-ordinate are equipped on the drawing blank 8 It is the equal slot 4 in 7 transverse and longitudinal coordinate intervals, is equipped with upper cover 14 on 4 top of the slot, the side of the upper cover 17 is by resetting bullet Spring 16 is articulated and connected with 4 top side of slot, and plug connection has straight line respectively in several slots 4 on the drawing blank 8 Drawing part 9, round drawing part 10 and several punctuate plug-in units 5, the round drawing part 10 is by cylinder A23, plug A24 and clamping Slot 20 forms, and Scroll 18 is internally provided in the cylinder A23, line 21 is equipped on the Scroll 18, in the cylinder A23 Side is equipped with recess 19, and opening 22, opening in the recess 19 of the sides the cylinder A23 are equipped on 19 inner surface of the recess Mouthful 22 sides be equipped with 18 matched sliding fastener of Scroll in the cylinder A23, be equipped on the recess 19 with it is described One end of 19 compatible buckling groove 20 of recess, the line 21 is fixedly connected by opening 22 with the buckling groove 20, described The lower parts cylinder A23 are equipped with plug A24 compatible with the slot 4 on the drawing blank 8, and the straight line draw part 9 is by column Body B25, plug B28 and inserted link 26 form, and are internally provided with Scroll 18 in the cylinder B25, are equipped on the Scroll 18 Line 21 is equipped with opening 22 in the sides the cylinder B25, and the line 21 is pierced by via the opening 22 of the sides cylinder B25, in the line 21 one end being pierced by are equipped with inserted link 26, slotting ring 27 compatible with the inserted link 26 are equipped in the other sides the cylinder B25, in institute It states the lower parts cylinder B25 and is equipped with plug B28 compatible with the slot 4 on the drawing blank 8, the further round drawing Scroll 18 in part 10 and straight line draw part 9 is identical as tape measure internal structure, is to be internally provided with spring in Scroll 18, with Realize that the punctuate plug-in unit 5 is made of cylinder C29 and plug C30, in the lower parts the cylinder C29 to the automatic winding of line 21 Equipped with plug C30,8 downside of drawing blank on the bottom plate 6 is equipped with several card slots 14, several cards on the bottom plate 6 14 side of slot is equipped with groove 11, and white board marker 12 and whiteboard eraser 13 are equipped in the groove 11,8 top of the bottom plate be equipped with The cover board 2 that the bottom plate 8 is articulated and connected is equipped with writing whiteboard 3 on 2 inner surface of the cover board, is equipped in 2 upside of the cover board Up knob 1 is equipped with lower handle corresponding with the up knob 1 of 2 upside of the cover board 15 in 6 downside of the bottom plate.

Implement mathematical studying appurtenance described in the utility model, in Senior High School Mathematics Curriculum, conic section is wherein One emphasis is often related to the synthtic price index of conic section in conic section study, such issues that include straight line and conic section Position relationship, straight line intersects with conic section, mutually from, it is tangent etc., and during doing the key to exercises and answer, often needed in conic section The distribution situation that image of the conic section in reference axis is drawn according to known conditions for analyzing topic, and then is solved a problem, however The key to exercises that does doing under topic practice or class either on class is answered, be required for student carry out rectangular coordinate system and related parabola, The drafting of circle and branch line, is commonly drawn the efficiency for undoubtedly increasing Students ' Problem-solving on foul papers, fast by the present apparatus The fast effective drafting for carrying out figure；

When solving a problem of conic section is being carried out, is being drawn by white board marker 12 according to topic Given information student as needed Writing mark is carried out to the interval numerical value of transverse and longitudinal coordinate in rectangular coordinate system 7 on blank 8, when carrying out parabolical drafting, Student can find out corresponding slot 4 by transverse and longitudinal coordinate known to topic in the rectangular coordinate system 7 on drawing blank 8, then Punctuate plug-in unit 5 is inserted into slot identical with the known coordinate 4, is marked out respectively in rectangular coordinate system 7 by punctuate plug-in unit 5 After a point, each punctuate plug-in unit 5 can be carried out by line drafting on drawing blank 8 by white board marker 12, to quickly and easily Draw figure parabola；

When carrying out circular drafting, student is according to known central coordinate of circle, the rectangular coordinate system 7 on drawing blank 8 On find out slot 4 corresponding with the central coordinate of circle, be inserted into the slot 4 by the plug A24 on round drawing part 10, then will be white The card of plate pen 12, which is put on the Scroll 18 that pull makes line 21 out of main body A 23 from inside to outside of buckling groove 20, to be produced, according to interval phase With slot 4 can quickly and effectively determine extraction line 21 length from identical as round radius length, pass through and slide fastener pair Scroll 18 carry out it is stuck to avoid line 21 automatically retract, after the limit that student passes through line 21 and main body A 23 utilize white board marker 12 can draw out known circle around cylinder A23 on drawing blank 8 easily and fast；

Carry out straight line, tangent line drafting when, student can by known conditions or two point coordinates being calculated on straight line, And two slots 4 corresponding with two point coordinates are found out in the rectangular coordinate system 7 on drawing blank 8 according to two point coordinates, Two straight line draw parts 9 are inserted into the slot 4 by the plug B28 on straight line draw part 9, are painted by the one of straight line of pull Inserted link 26 on graph 9 extracts line 21 out from Scroll 18, and the line of extraction 21 is inserted by the inserted link 26 of front end another To realize the drawing of straight line in slotting ring 27 on straight line draw part 9；

Usual during topic, the present apparatus can not only facilitate student's progress, and quickly drawing is solved a problem, but also student is also Rough draft calculating can be carried out by the writing whiteboard 3 on cover board 2, and in the teaching process of teacher, delay to avoid drawing on class Course, teacher can be hung over the present apparatus on blackboard, it can be achieved that quickly figure displaying, is convenient for teaching by handle；By this dress It sets, can realize that student's rapid drawing makes conic section, when being conducive to student's primary learning, comparison quadratic function equation coefficient variation And the comparison study of the translation relation of corresponding image, the conic section and straight line that the present apparatus is drawn out have accuracy, energy The intuitive and accurate position relationship for showing conic section and straight line, the position relationship of conic section is very clear, is convenient for student It solves a problem, while in student in learning process, constantly enhancing makes problem reduction to the avulsion flap of image, is conducive to student It practises.

It is enlightenment, through the above description, art technology with the above-mentioned desirable embodiment according to the utility model Personnel can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item The technical scope of utility model is not limited to the contents of the specification, it is necessary to determine its skill according to right Art range.

Claims

1. a kind of mathematical studying appurtenance, including cover board（2）And bottom plate（6）, it is characterized in that：In the bottom plate（6）It is equipped with Drawing blank（8）, in the drawing blank（8）It is equipped with rectangular coordinate system（7）, in the drawing blank（8）It is equipped with several Transverse and longitudinal interval and the rectangular coordinate system（7）The equal slot in transverse and longitudinal coordinate interval（4）, in the drawing blank（8）On it is several Slot（4）Inside plug connection has straight line draw part respectively（9）, round drawing part（10）With several punctuate plug-in units（5）, at the bottom Plate（8）Top is equipped with cover board（2）.

2. mathematical studying appurtenance according to claim 1, it is characterized in that：The round drawing part（10）By cylinder A（23）, plug A（24）And buckling groove（20）Composition, in the cylinder A（23）It is internally provided with Scroll（18）, in the winding Axis（18）It is equipped with line（21）, in the cylinder A（23）Side is equipped with recess（19）, in the recess（19）Inner surface is equipped with Opening（22）, in the recess（19）It is equipped with and the recess（19）Compatible buckling groove（20）, the line（21）One End passes through opening（22）With the buckling groove（20）It is fixedly connected, in the cylinder A（23）Lower part is equipped with and the drawing blank （8）On slot（4）Compatible plug A（24）.

3. mathematical studying appurtenance according to claim 2, it is characterized in that：In the cylinder A（23）The recess of side （19）Interior opening（22）Side is equipped with and the cylinder A（23）Interior Scroll（18）Matched sliding fastener.

4. mathematical studying appurtenance according to claim 1, it is characterized in that：The straight line draw part（9）By cylinder B （25）, plug B（28）And inserted link（26）Composition, in the cylinder B（25）It is internally provided with Scroll（18）, in the Scroll （18）It is equipped with line（21）, in the cylinder B（25）Side is equipped with opening（22）, the line（21）Via cylinder B（25）Side Opening（22）It is pierced by, in the line（21）The one end being pierced by is equipped with inserted link（26）, in the cylinder B（25）The other side be equipped with The inserted link（26）Compatible slotting ring（27）, in the cylinder B（25）Lower part is equipped with and the drawing blank（8）On slot （4）Compatible plug B（28）.

5. mathematical studying appurtenance according to claim 1, it is characterized in that：The punctuate plug-in unit（5）By cylinder C （29）With plug C（30）Composition, in the cylinder C（29）Lower part is equipped with plug C（30）.

6. mathematical studying appurtenance according to claim 1, it is characterized in that：The slot（4）Top is equipped with upper cover （17）, the upper cover（17）Side pass through resetting spring（16）With slot（4）Top side is articulated and connected.

7. mathematical studying appurtenance according to claim 1, it is characterized in that：In the bottom plate（6）On drawing blank （8）Downside is equipped with several card slots（14）, in the bottom plate（6）On several card slots（14）Side is equipped with groove（11）, described Groove（11）It is interior to be equipped with white board marker（12）And whiteboard eraser（13）.

8. mathematical studying appurtenance according to claim 1, it is characterized in that：The bottom plate（6）With the cover board（2）Hinge It connects in succession.

9. the mathematical studying appurtenance according to claim 1 or 8, it is characterized in that：In the cover board（2）It is set on inner surface There is writing whiteboard（3）.

10. mathematical studying appurtenance according to claim 1, it is characterized in that：In the cover board（2）Upside is equipped with upper Hand（1）, in the bottom plate（6）Downside is equipped with and the cover board（2）The up knob of upside（1）Corresponding lower handle（15）.