CN203945879U - The auxiliary writing device of determinant for a kind of linear algebra teaching - Google Patents
The auxiliary writing device of determinant for a kind of linear algebra teaching Download PDFInfo
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- CN203945879U CN203945879U CN201420414707.2U CN201420414707U CN203945879U CN 203945879 U CN203945879 U CN 203945879U CN 201420414707 U CN201420414707 U CN 201420414707U CN 203945879 U CN203945879 U CN 203945879U
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- rule
- determinant
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- main scale
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Abstract
The utility model discloses the auxiliary writing device of a kind of linear algebra teaching determinant, comprise bull stick, balancing pole and comparison frame, described comparison frame comprises shrinkage-rule, be arranged at described shrinkage-rule two ends and with the orthogonal perpendicular chi of described shrinkage-rule, on described perpendicular chi, all offer the microscler hole slot of engraving, described shrinkage-rule is Collapsible structure, comprise main scale, and be sleeved on the auxiliary chi on described main scale.Described main scale surface is provided with the sleeve pipe that can slide along described main scale, the upper/lower terminal face of described sleeve pipe be all fixedly installed with described shrinkage-rule perpendicular compare pin.While avoiding writing determinant, there is crooked situation; The microscler hole slot of engraving of offering on perpendicular chi, facilitates teacher to write the vertical line on determinant both sides, and has ensured that two vertical lines are parallel to each other and vertically, attractive in appearance; Only need moving handle can drive comparison frame to move, convenient teaching, after using, is shelved on comparison frame on base, simple and fast, and do not affect and write other guide.
Description
Technical field
The utility model belongs to teaching aid technical field, relates in particular to one and can be sleeved on blackboard, the teaching servicing unit of writing for linear algebra determinant.
Background technology
In order to help student to form clear and definite concept, improve student's learning interest in teaching process, enrich perceptual knowledge, teaching aid arises at the historic moment, to be used for observation ability and the thinking ability of Developing Students '.
But most of teaching aid is mainly to serve student, and lack the function that auxiliary teacher imparts knowledge to students.For example, in the teaching process of linear algebra, need on the blackboard of being everlasting, write determinant, for simple determinant, as single order determinant and second order determinant, write and be easier to, but for complicated n rank determinant, write and in process, be prone to crooked phenomenon, not only strengthen and write difficulty, and impact teaching.
Application number is that 201220735048.3 patent document discloses the split type teaching aid of a kind of linear algebra teaching, the patent document that and for example application number is 201220735071.2 discloses a kind of linear algebra teaching combination type teaching aid, thereby it is all compared and avoided occurring the clerical error of serial by horizon rule and vertical chi.But, chi is fixed on to blackboard surface, though can compare, also affect teacher and write other guide, in addition, before writing, with afterwards, all need regulate the position of chi in vertical and horizontal direction, complicated operation, mobility is little.
Summary of the invention
For solving the problems of the technologies described above, the utility model proposes the auxiliary writing device of a kind of linear algebra teaching determinant, technical scheme is as follows:
The auxiliary writing device of determinant for a kind of linear algebra teaching, comprise bull stick, balancing pole, be fixedly connected with described balancing pole compare frame, the plate angle of described bull stick one end and blackboard is hinged, the described bull stick other end and balancing pole are hinged.Described comparison frame comprises shrinkage-rule, be arranged at described shrinkage-rule two ends and with the orthogonal perpendicular chi of described shrinkage-rule, on described perpendicular chi, all offer the microscler hole slot of engraving, described shrinkage-rule is Collapsible structure, comprises main scale, and is sleeved on the auxiliary chi on described main scale.Described main scale surface is provided with the sleeve pipe that can slide along described main scale, the upper/lower terminal face of described sleeve pipe be all fixedly installed with described shrinkage-rule perpendicular compare pin.
Further, described main scale one end offers the cavity communicating with the external world, and the oral area of described cavity is provided with baffle ring, and described cavity is goed deep in one end of described auxiliary chi, the part surface that described auxiliary chi gos deep into described cavity is provided with spacing ring, for preventing that described auxiliary chi from deviating from from described main scale.
Further, described auxiliary writing device also comprises: for shelving the base of described auxiliary writing device, described base is fixedly mounted on the lower limb of blackboard.
Preferably, on described balancing pole, handle is installed, in teaching process, can holds handle and regulate the position of described comparison frame.
Preferably, on described perpendicular chi and shrinkage-rule, be carved with graduation mark, described comparison frame also can be worked as rule use.
The beneficial effect that the utility model brings:
1, provide comparison frame for writing determinant, while avoiding writing determinant, occur crooked situation.
2, the microscler hole slot of engraving of offering on perpendicular chi, facilitates teacher to write the vertical line on determinant both sides, and has ensured that two vertical lines are parallel to each other and vertically, attractive in appearance.
3, only need moving handle can drive comparison frame to move, convenient teaching, after using, is shelved on comparison frame on base, simple and fast, and do not affect and write other guide.
Brief description of the drawings
Fig. 1 is the structural representation of the auxiliary writing device of a kind of linear algebra teaching of the utility model determinant;
Fig. 2 is auxiliary writing device unused state figure of the present utility model;
Fig. 3 is shrinkage-rule structural representation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on embodiment of the present utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Fig. 1 to 2, the auxiliary writing device of determinant for a kind of linear algebra teaching, comprising: bull stick 1, balancing pole 2 and comparison frame 3.
The plate angle of described bull stick 1 one end and blackboard is hinged, and the other end connects described balancing pole 2, described balancing pole
2 one end and described bull stick 1 are hinged, and the other end is fixedly connected with described comparison frame 3.Described comparison frame 3 comprise shrinkage-rule 4 and with the orthogonal perpendicular chi 5 of described shrinkage-rule 4, described shrinkage-rule 4 two ends are fixedly connected with respectively described perpendicular chi 5.On described perpendicular chi 5, all offer microscler hollow slots 6, in teaching process, chalk can be drawn on blackboard to the vertical line on determinant both sides through described microscler hollow slots 6, ensured that two vertical lines are parallel to each other and vertically, facilitate attractive in appearance.
Described shrinkage-rule 4 is Collapsible structure, comprises main scale 7, and is sleeved on the auxiliary chi on described main scale 7
8, described auxiliary chi 8 can move relative to described main scale 7 along continuous straight runs, and drives described perpendicular chi 5 to move left and right, and can regulate the distance between two described perpendicular chis 5 according to order of a determinant number.Described main scale 7 surfaces are provided with the sleeve pipe 9 that can slide along described main scale 7, the upper/lower terminal face of described sleeve pipe 9 be all fixedly installed with described shrinkage-rule 4 perpendicular compare pin 10, can, according to the distance between described two perpendicular chis 5, regulate the position of described comparison pin 10.The position of described comparison frame 3, perpendicular chi 5 and comparison pin 10, writes determinant as main according to teaching demand to facilitate.
In some illustrative embodiment, as shown in Figure 3, described main scale 7 one end offer the cavity communicating with the external world, and described cavity is goed deep in one end of described auxiliary chi 8, and described auxiliary chi 8 can move left and right along described main scale 7.The oral area of described cavity is provided with baffle ring 11, and the part surface that described auxiliary chi 8 gos deep into described cavity is provided with spacing ring 12, for preventing that described auxiliary chi 8 from deviating from from described main scale 7.
In some illustrative embodiment, as shown in Fig. 1 to 2, described auxiliary writing device also comprises: for shelving the base 13 of described auxiliary writing device, described base 13 is fixedly mounted on the lower limb of blackboard, when use, described auxiliary writing device is mentioned on described base 13, move to desired location, write.After having write, described auxiliary writing device is returned on base 13.
Preferably, on described balancing pole 2, handle is installed, in teaching process, can holds handle and regulate the position of described comparison frame 3.
Preferably, on described perpendicular chi 5 and shrinkage-rule 4, be carved with graduation mark, described comparison frame 3 also can be worked as rule use.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from the change of making under Spirit Essence of the present utility model and principle; modify; substitute, combination, simplifies; all should be equivalent substitute mode, all should be included in protection domain of the present utility model.
Claims (5)
1. the auxiliary writing device of determinant for linear algebra teaching, is characterized in that, comprise bull stick, balancing pole, be fixedly connected with described balancing pole compare frame;
The plate angle of described bull stick one end and blackboard is hinged, and the described bull stick other end and balancing pole are hinged;
Described comparison frame comprises shrinkage-rule, be arranged at described shrinkage-rule two ends and with the orthogonal perpendicular chi of described shrinkage-rule, on described perpendicular chi, all offer the microscler hole slot of engraving, described shrinkage-rule is Collapsible structure, comprises main scale, and is sleeved on the auxiliary chi on described main scale;
Described main scale surface is provided with the sleeve pipe that can slide along described main scale, the upper/lower terminal face of described sleeve pipe be all fixedly installed with described shrinkage-rule perpendicular compare pin.
2. the auxiliary writing device of determinant for linear algebra teaching according to claim 1, is characterized in that, described main scale one end offers the cavity communicating with the external world, and the oral area of described cavity is provided with baffle ring,
Described cavity is goed deep in one end of described auxiliary chi, and the part surface that described auxiliary chi gos deep into described cavity is provided with spacing ring.
3. the auxiliary writing device of determinant for linear algebra teaching according to claim 1, is characterized in that, also comprise the base for shelving described auxiliary writing device, described base is fixedly mounted on the lower limb of blackboard.
4. the auxiliary writing device of determinant for linear algebra teaching according to claim 1, is characterized in that, on described balancing pole, handle is installed.
5. the auxiliary writing device of determinant for linear algebra teaching according to claim 1, is characterized in that, on described perpendicular chi and shrinkage-rule, is carved with graduation mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414707.2U CN203945879U (en) | 2014-07-26 | 2014-07-26 | The auxiliary writing device of determinant for a kind of linear algebra teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414707.2U CN203945879U (en) | 2014-07-26 | 2014-07-26 | The auxiliary writing device of determinant for a kind of linear algebra teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203945879U true CN203945879U (en) | 2014-11-19 |
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ID=51887937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420414707.2U Expired - Fee Related CN203945879U (en) | 2014-07-26 | 2014-07-26 | The auxiliary writing device of determinant for a kind of linear algebra teaching |
Country Status (1)
| Country | Link |
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| CN (1) | CN203945879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894870A (en) * | 2016-06-30 | 2016-08-24 | 吉林化工学院 | Mechanical device for linear algebra teaching |
-
2014
- 2014-07-26 CN CN201420414707.2U patent/CN203945879U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894870A (en) * | 2016-06-30 | 2016-08-24 | 吉林化工学院 | Mechanical device for linear algebra teaching |
| CN105894870B (en) * | 2016-06-30 | 2018-09-07 | 吉林化工学院 | A kind of mechanical device for linear algebra teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20170726 |