CN206411949U - A kind of Mathematical Limited Teaching apparatus - Google Patents
A kind of Mathematical Limited Teaching apparatus Download PDFInfo
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- CN206411949U CN206411949U CN201621335856.5U CN201621335856U CN206411949U CN 206411949 U CN206411949 U CN 206411949U CN 201621335856 U CN201621335856 U CN 201621335856U CN 206411949 U CN206411949 U CN 206411949U
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- waffle slab
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Abstract
A kind of Mathematical Limited Teaching apparatus, is related to a kind of teaching aid.Facade is provided with two chutes before magnetic panel, facade lower left corner a quarter plate face is painted with coordinate net ruling before magnetic panel, extreme value sign magnetic patch is adsorbed with coordinate net ruling, three waffle slabs are arranged at before magnetic panel at a quarter plate face of the facade upper right corner, three waffle slabs pass through a pair of magnetic sliding block one respectively, a pair of magnetic sliding block two and a pair of magnetic sliding block three are connected with two slides, facade upper left corner a quarter plate face and lower right corner a quarter plate face are adsorbed with a magnetic writing board respectively before magnetic panel, the centre position of magnetic panel lower surface is provided with round recessed, the matching of expansion link one end is plugged in described round recessed, the expansion link other end is vertically fixed on bottom plate.It can assisted teacher Limits properties are carried out with effective explanation, simulation moves closer to the form of extreme value, the knowledge for understanding mathematical limit for becoming apparent from student.
Description
Technical field
The utility model is related to a kind of teaching aid, especially a kind of Mathematical Limited Teaching apparatus.
Background technology
The limit is the basic concept in higher mathematics calculus, and it refers to variable in certain change procedure, from total
For gradually stable such a variation tendency and the value of institute's convergence（Extreme value）.The concept of the limit has the abstract of height
Property, teacher is single to carry out explanation it is difficult to be received by student by word.
The content of the invention
The purpose of this utility model is to provide a kind of Mathematical Limited Teaching apparatus, it can assisted teacher to the limit
Problem is effectively explained, and simulation moves closer to the form of extreme value, the knowledge for understanding mathematical limit for becoming apparent from student.
Above-mentioned purpose is realized, the utility model takes following technical proposals：A kind of Mathematical Limited Teaching apparatus, including
Magnetic panel, extreme value sign magnetic patch, expansion link, bottom plate, two magnetic writing boards and three waffle slabs, described magnetic panel
For square riser, facade is provided with two chutes before magnetic panel, and two described chutes are by the magnetic panel lower left corner to upper right
Angular direction is opened up and arranged in parallel, and facade lower left corner a quarter plate face is painted with coordinate net ruling before magnetic panel, described
Coordinate net ruling on be adsorbed with extreme value sign magnetic patch, it is each described that waffle slab is by waffle slab body and is fixed on grid
The L-shaped framework in the facade lower left corner is constituted before plate body, and the waffle slab body of three waffle slabs is from front to back successively mutually by being arranged at
Before magnetic panel at a quarter plate face of the facade upper right corner, the waffle slab positioned at rear side passes through a pair of magnetic sliding block one and two cunnings
Groove is slidably connected, and is connected positioned at middle waffle slab by a pair of magnetic sliding block two with two slides, the net positioned at front side
Panel is connected by a pair of magnetic sliding block three with two slides, facade upper left corner a quarter plate face and the right side before magnetic panel
Inferior horn a quarter plate face is adsorbed with a magnetic writing board respectively, and the centre position of magnetic panel lower surface is provided with round recessed,
Described expansion link one end matching is plugged in described round recessed, and the expansion link other end is vertically fixed on bottom plate.
Compared with prior art, the beneficial effects of the utility model are：
1. the utility model moves closer to the form of extreme value, the understanding mathematical limit for being easy to student to become apparent from by simulation
Knowledge；
2. the utility model can be put and use, magnetic panel can also be removed and be suspended on suitable location and use, and it is mobile
It is convenient.
Brief description of the drawings
Fig. 1 is the overall structure axonometric drawing of Mathematical Limited Teaching apparatus of the present utility model；
Fig. 2 is the fractionation structure axonometric drawing of Mathematical Limited Teaching apparatus of the present utility model；
Fig. 3 is Fig. 2 A portions enlarged drawing；
Fig. 4 is the assembling structure schematic diagram of three waffle slabs of the present utility model and magnetic panel.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model is carried out it is clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of utility model, rather than whole embodiments,
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of the utility model protection.
As shown in Fig. 1 ~ Fig. 4, the utility model discloses a kind of Mathematical Limited Teaching apparatus, including magnetic panel 1,
Extreme value sign magnetic patch 4, expansion link 5, bottom plate 6, two magnetic writing boards 3, three waffle slabs 2 and four rolling 7, described magnetic
Property panel 1 be that facade is provided with link after square riser, magnetic panel 1, the surrounding fixed cover of magnetic panel 1 is equipped with frame 1-3,
Facade is set before described frame 1-3 protrusion magnetic panel 1, and facade is provided with two chute 1-1, described two before magnetic panel 1
Bar chute 1-1 is opened up and arranged in parallel by the lower left corner of magnetic panel 1 to upper right angular direction, facade lower-left before magnetic panel 1
Angle a quarter plate face, which is painted with coordinate net ruling 1-2, described coordinate net ruling 1-2, is adsorbed with extreme value sign magnetic patch 4, each
Described waffle slab 2 is by waffle slab body 2-1 and is fixed on the L-shaped framework 2-2 in the facade lower left corner before waffle slab body 2-1
Constitute, the waffle slab body 2-1 of three waffle slabs 2 is from front to back successively mutually by being arranged at the facade upper right corner four before magnetic panel 1
At/mono- plate face, the waffle slab 2 positioned at rear side is slidably connected by the 2-3 of a pair of magnetic sliding block one with two chute 1-1, is located at
Middle waffle slab 2 is slidably connected by the 2-4 of a pair of magnetic sliding block two with two chute 1-1, and the waffle slab 2 positioned at front side passes through
The 2-5 of a pair of magnetic sliding block three is slidably connected with two chute 1-1, described positioned at the waffle slab 2 of front side, positioned at middle grid
The sizing grid of plate 2, the waffle slab 2 positioned at rear side and coordinate net ruling 1-2 gradually reduces, the facade upper left corner before magnetic panel 1
A quarter plate face and lower right corner a quarter plate face are adsorbed with a magnetic writing board 3, two described magnetic writings respectively
Plate 3 is hinged with described frame 1-3 correspondence positions, and the centre position of the lower surface of magnetic panel 1 is provided with round recessed, and described is flexible
The matching of the one end of bar 5 is plugged in described round recessed, and the other end of expansion link 5 is vertically fixed on bottom plate 6, under described bottom plate 6
Surface is provided with four rolling 7, and described four rolling 7 is in rectangular layout.
When using the utility model, it is bent that teacher can draw the limit on the coordinate net ruling 1-2 of magnetic panel 1 in advance
Line, and by extreme value sign magnetic patch 4 adsorb at the extreme point of limit curve, open two magnetic writing boards 3, then rear side,
The enlarged drawing for moving closer to limit curve extreme point region is drawn on middle, three waffle slabs 2 of front side respectively, afterwards, by three
Individual waffle slab 2 slides into the upper right corner of magnetic panel 1 successively, and closes two magnetic writing boards 3.When giving lessons, teacher can be two
Writing on the blackboard and explanation first are carried out to coordinate net ruling 1-2 on individual magnetic writing board 3, two magnetic books are opened after explanation certain time
Plate 3 is write, the waffle slab 2 of rear side is slidably overlayed at into the lower left corner of magnetic panel 1, and closes two magnetic writing boards 3, to rear side
The enlarged drawing drawn on waffle slab 2 proceeds explanation, two magnetic writing boards 3 is opened after explanation certain time, by centre
Waffle slab 2 slidably overlay on the waffle slab 2 of rear side, and two magnetic writing boards 3 are closed, to being painted on middle waffle slab 2
The enlarged drawing of system proceeds explanation, and two magnetic writing boards 3 are opened after explanation certain time, the waffle slab 2 of front side is slided
It is dynamic to be covered on the waffle slab 2 of centre, and close two magnetic writing boards 3, to the enlarged drawing drawn on the waffle slab 2 of front side after
It is continuous to be explained, by the gradually covering of three waffle slabs 2, limit curve is showed in Eyes of Students and move closer to extreme point
Sensation, by intuitively watch and meanwhile be aided with teacher explanation strengthen student's understandability.Facade is provided with after magnetic panel 1
Link, the lower end of magnetic panel 1 is plugged on expansion link 5, magnetic panel 1 is both put using or is hung and is used.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in others dress body form
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the condition of equivalent fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. a kind of Mathematical Limited Teaching apparatus, including magnetic panel（1）, expansion link（5）And bottom plate（6）, it is characterised in that：
Described Mathematical Limited Teaching apparatus also includes extreme value and indicates magnetic patch（4）, two magnetic writing boards（3）And three grids
Plate（2）, described magnetic panel（1）For square riser, magnetic panel（1）Preceding facade is provided with two chutes（1-1）, it is described
Two chutes（1-1）By magnetic panel（1）The lower left corner is opened up and arranged in parallel to upper right angular direction, magnetic panel（1）Before
Facade lower left corner a quarter plate face is painted with coordinate net ruling（1-2）, described coordinate net ruling（1-2）On be adsorbed with extreme value mark
Show magnetic patch（4）, each described waffle slab（2）By waffle slab body（2-1）And it is fixed on waffle slab body（2-1）It is preceding vertical
The L-shaped framework in the face lower left corner（2-2）Constitute, three waffle slabs（2）Waffle slab body（2-1）From front to back successively mutually by setting
In magnetic panel（1）At preceding facade upper right corner a quarter plate face, positioned at the waffle slab of rear side（2）Pass through a pair of magnetic sliding block one
（2-3）With two chutes（1-1）It is slidably connected, positioned at middle waffle slab（2）Pass through a pair of magnetic sliding block two（2-4）With two
Chute（1-1）It is slidably connected, the waffle slab positioned at front side（2）Pass through a pair of magnetic sliding block three（2-5）With two chutes（1-1）It is sliding
Dynamic connection, magnetic panel（1）Preceding facade upper left corner a quarter plate face and lower right corner a quarter plate face are adsorbed with one respectively
Magnetic writing board（3）, magnetic panel（1）The centre position of lower surface is provided with round recessed, described expansion link（5）One end matching is inserted
It is connected in described round recessed, expansion link（5）The other end is vertically fixed on bottom plate（6）On.
2. a kind of Mathematical Limited Teaching apparatus according to claim 1, it is characterised in that：The described front side that is located at
Waffle slab（2）, positioned at middle waffle slab（2）, positioned at the waffle slab of rear side（2）And coordinate net ruling（1-2）Sizing grid
Gradually reduce.
3. a kind of Mathematical Limited Teaching apparatus according to claim 1 or 2, it is characterised in that：Described magnetic exhibition
Plate（1）Surrounding fixed cover is equipped with frame（1-3）, described frame（1-3）Protrude magnetic panel（1）Preceding facade is set.
4. a kind of Mathematical Limited Teaching apparatus according to claim 3, it is characterised in that：Two described magnetic books
Write plate（3）With frame（1-3）Correspondence position is hinged.
5. a kind of Mathematical Limited Teaching apparatus according to claim 1, it is characterised in that：Described bottom plate（6）Under
Surface is provided with four rolling（7）, described four rolling（7）It is in rectangular layout.
6. a kind of Mathematical Limited Teaching apparatus according to claim 1, it is characterised in that：Described magnetic panel
（1）Facade is provided with link afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335856.5U CN206411949U (en) | 2016-12-07 | 2016-12-07 | A kind of Mathematical Limited Teaching apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335856.5U CN206411949U (en) | 2016-12-07 | 2016-12-07 | A kind of Mathematical Limited Teaching apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206411949U true CN206411949U (en) | 2017-08-15 |
Family
ID=59550530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621335856.5U Active CN206411949U (en) | 2016-12-07 | 2016-12-07 | A kind of Mathematical Limited Teaching apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206411949U (en) |
-
2016
- 2016-12-07 CN CN201621335856.5U patent/CN206411949U/en active Active
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