CN113838345A - Mathematical modeling teaching aid - Google Patents
Mathematical modeling teaching aid Download PDFInfo
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- CN113838345A CN113838345A CN202111356472.7A CN202111356472A CN113838345A CN 113838345 A CN113838345 A CN 113838345A CN 202111356472 A CN202111356472 A CN 202111356472A CN 113838345 A CN113838345 A CN 113838345A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
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- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a mathematical modeling teaching aid which comprises a first fixed ruler plate, wherein a handle is fixedly connected to the side wall of one side of the first fixed ruler plate, a connecting groove is formed in the side wall of the other side of the first fixed ruler plate, a fixed shaft is rotatably connected to the connecting groove, a second fixed ruler plate is fixedly sleeved on the fixed shaft, the upper end and the lower end of the fixed shaft are respectively arranged in a mode of penetrating through the upper inner wall and the lower inner wall of the fixed shaft, a connecting block is arranged at the bottom end of the fixed shaft, a rotating groove is formed in the connecting block, a rotating block matched with the rotating groove is rotatably connected to the rotating groove, the rotating block is fixedly connected with the bottom wall of the fixed shaft, and an adjusting structure is arranged at the other end of the fixed shaft. When the invention is used for drawing, a large number of tools do not need to be carried, and the tools do not need to be frequently replaced, thereby being more convenient and being beneficial to drawing of graphs and teaching of teachers.
Description
Technical Field
The invention relates to the field of mathematics teaching aids, in particular to a mathematics modeling teaching aid.
Background
Mathematics education not only teaches students mathematical knowledge, but also teaches students to apply learned knowledge to solve practical problems. The drawing can be carried out in many times in the existing mathematical education, and the existing drawing teaching aids comprise compasses, rulers, protractors and the like.
When the teacher carried out mathematics and draws, the instrument that needs to use is too many, and it is all inconvenient to carry and use, simultaneously, when drawing the circle, the stitch of compasses is difficult to fix, slides on the blackboard easily, has brought the trouble for drawing the circle, and the stitch of compasses is slided and is opened the back and probably stings other people simultaneously, causes the potential safety hazard.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: too many instruments that need to use, it is all inconvenient to carry and use, and the stitch of compasses is difficult to fix, slides on the blackboard easily, has brought the trouble for drawing a circle, and the stitch of compasses slips simultaneously and probably pierces other people after opening, causes the potential safety hazard, and the mathematical modeling teaching aid that proposes.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a mathematical modeling teaching aid, includes fixed chi board one, a handle of fixedly connected with on one side lateral wall of fixed chi board one, a spread groove has been seted up on the opposite side lateral wall of fixed chi board one, the spread groove internal rotation is connected with a fixed axle, fixed cover is equipped with a fixed chi board two on the fixed axle, the upper and lower inside wall setting that the fixed axle was run through respectively to the upper and lower end of fixed axle, the bottom department of fixed axle is provided with a connecting block, a swivelling chute has been seted up to the inside of connecting block, the swivelling chute internal rotation is connected with a rotatory piece rather than the assorted, the diapire fixed connection of rotatory piece and fixed axle, fixed sucking disc of fixedly connected with on the diapire of connecting block, the other end of fixed axle is provided with the regulation structure.
Preferably, adjust the structure and include the regulating block, the regulating block sets up the top department at fixed chi board one, fixedly connected with polylith fixed block on the diapire of regulating block, also set up the fixed slot with polylith fixed block one-to-one on the upper wall of fixed chi board one, the polylith the fixed block is central symmetric distribution about the center of regulating block diapire, an regulation chamber has been seted up to the inside of regulating block, a connecting axle of fixedly connected with between the upper and lower inside wall in regulation chamber, the outside slip cap of connecting axle is equipped with a ratchet, the equal fixedly connected with fixture block in both ends about the connecting axle, also seted up on the inner wall of ratchet with two fixture block assorted slip draw-in grooves, be provided with the ratchet tooth on the inside wall in regulation chamber, the ratchet tooth sets up with the meshing of regulation chamber.
Preferably, the bottom end of the connecting shaft penetrates through the lower inner wall of the adjusting cavity, the bottom end of the connecting shaft is fixedly connected with the top end of the fixing shaft, an angle scribing line is arranged at the top end of the first fixing ruler plate, and the angle scribing line is arranged at the outer side of the adjusting block.
Preferably, a containing groove is formed in the bottom wall of the second fixed ruler plate, the containing groove is formed in one end, far away from the fixed shaft, of the second fixed ruler plate, a moving plate is connected to the containing groove in a sliding mode, sliding blocks are fixedly connected to the front side wall and the rear side wall of the moving plate respectively, vertical grooves corresponding to the two sliding blocks are formed in the front inner side wall and the rear inner side wall of the containing groove, a sliding groove is formed in the side wall, close to the fixed shaft, of the containing groove, a horizontal groove matched with the sliding blocks is formed in the front inner side wall and the rear inner side wall of the sliding groove, the horizontal groove is communicated with the vertical grooves, a mounting block is fixedly connected to the bottom end of the moving plate, and chalk is arranged in the mounting block.
Preferably, a locking groove has been seted up on the lateral wall of one side that the fixed axle was kept away from to the movable plate, be provided with a locking lever on the lateral wall of fixed chi board two, the shape and the locking groove phase-match of locking lever, the lateral wall that the locking lever runs through to accomodate the groove stretches into locking inslot and sets up, the sliding block is the cylindricity setting.
Preferably, the other end fixedly connected with of handle prevents the piece that falls, the diameter of preventing the piece that falls is greater than the diameter of handle, still be provided with the skid resistant course on the handle.
Preferably, the first fixed ruler plate and the second fixed ruler plate are both provided with length scribed lines.
Compared with the prior art, the invention has the beneficial effects that: the device possesses the ruler simultaneously, the compasses, the function of protractor, when drawing, need not to carry a large amount of instruments, also need not frequent change instrument when drawing, thereby it is more convenient, adopt the sucking disc of side to fix simultaneously, the condition of skidding can not appear when drawing the circle, be favorable to drawing circularly, and do not use fixed stitch, thereby the safety problem has been avoided, in addition, through the length groove on the fixed ruler board two, draw the circle of regulation between can, need not earlier the radius of drawing, draw the circle again, it is more simple and convenient to operate, be favorable to teacher's drawing teaching.
Drawings
FIG. 1 is a schematic structural diagram of a mathematical modeling teaching aid provided by the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
fig. 4 is a schematic three-dimensional structure diagram of a second fixed ruler plate of the mathematical modeling teaching aid provided by the invention.
In the figure: the locking device comprises a first fixed ruler plate 1, a grip 2, a connecting groove 3, a fixed shaft 4, a second fixed ruler plate 5, a connecting block 6, a rotating block 7, a rotating groove 8, a fixed sucker 9, a sliding groove 10, a horizontal groove 11, ratchet teeth 12, a connecting shaft 13, a ratchet wheel 14, a fixed clamping block 15, an adjusting cavity 16, a fixed block 17, a fixed groove 18, an adjusting block 19, a moving plate 20, a mounting block 21, a containing groove 22, a vertical groove 23, a locking groove 24 and a locking rod 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a mathematical modeling teaching aid comprises a fixed ruler plate 1, a handle 2 is fixedly connected to one side wall of the fixed ruler plate 1, an anti-falling block is fixedly connected to the other end of the handle 2, the diameter of the anti-falling block is larger than that of the handle 2, an anti-slip layer is further arranged on the handle 2, the anti-slip layer and the anti-falling block can prevent the teaching aid from falling off from the hand and damage the teaching aid, a connecting groove 3 is formed in the other side wall of the fixed ruler plate 1, a fixed shaft 4 is rotatably connected to the connecting groove 3, a fixed ruler plate two 5 is fixedly sleeved on the fixed shaft 4, the upper end and the lower end of the fixed shaft 4 respectively penetrate through the upper inner side wall and the lower inner side wall of the fixed shaft 4, a connecting block 6 is arranged at the bottom end of the fixed shaft 4, a rotating groove 8 is formed in the connecting block 6, and a rotating block 7 matched with the rotating groove 8 is rotatably connected with the rotating groove, the rotating block 7 is fixedly connected with the bottom wall of the fixed shaft 4, the bottom wall of the connecting block 6 is fixedly connected with a fixed sucker 9, the other end of the fixed shaft 4 is provided with an adjusting structure, the adjusting structure comprises an adjusting block 19, the adjusting block 19 is arranged at the top end of the fixed ruler plate 1, a plurality of fixing blocks 17 are fixedly connected with the bottom wall of the adjusting block 19, fixing grooves 18 which are in one-to-one correspondence with the fixing blocks 17 are also formed in the upper wall of the fixed ruler plate 1, the fixing blocks 17 are distributed in central symmetry relative to the center of the bottom wall of the adjusting block 19, an adjusting cavity 16 is formed in the adjusting block 19, a connecting shaft 13 is fixedly connected between the upper inner wall and the lower inner wall of the adjusting cavity 16, a ratchet wheel 14 is sleeved on the outer side of the connecting shaft 13 in a sliding mode, a fixed clamping block 15 is fixedly connected with the left end and the right end of the connecting shaft 13, and a sliding clamping groove matched with the two fixed clamping blocks 15 is also formed in the inner wall of the ratchet wheel 14, ratchet teeth 12 are arranged on the inner side wall of the adjusting cavity 16, the ratchet teeth 12 are meshed with the adjusting cavity 16, the bottom end of the connecting shaft 13 penetrates through the lower inner wall of the adjusting cavity 16, the bottom end of the connecting shaft 13 is fixedly connected with the top end of the fixing shaft 4, an angle marking line is arranged at the top end of the first fixed ruler plate 1, the adjusting block 19 is pulled upwards to enable the fixing block 17 to be separated from the fixing groove 18, the second fixed ruler plate 5 is rotated, the second fixed ruler plate 5 drives the fixing shaft 4 to rotate, the connecting shaft 13 fixedly connected with the fixing shaft 4 is also rotated along with the fixing shaft, the ratchet 14 is driven to rotate, the ratchet teeth 12 and the adjusting block 19 are also rotated together, the rotating angle of the second fixed ruler plate 5 can be clearly known through the angle marking line arranged on the first fixed ruler plate 1, when the second fixed ruler plate 5 rotates to a required angle, the adjusting block 19 is pressed downwards to enable the fixing block 17 to be inserted into the fixing groove 18, the adjusting block 19 is fixed, the connecting shaft 13 can not rotate around under the action of the ratchet wheel 14 and the ratchet wheel teeth, so that the angle between the first fixed ruler plate 1 and the second fixed ruler plate 5 can be kept, angle drawing during teaching is facilitated, an angle scribing line is arranged at the outer side of the adjusting block 19, a containing groove 22 is formed in the bottom wall of the second fixed ruler plate 5, the containing groove 22 is arranged at one end of the second fixed ruler plate 5, which is far away from the fixed shaft 4, a moving plate 20 is connected in the containing groove 22 in a sliding mode, sliding blocks are fixedly connected to the front side wall and the rear side wall of the moving plate 20, vertical grooves 23 corresponding to the two sliding blocks are formed in the front inner side wall and the rear inner side wall of the containing groove 22, a sliding groove 10 is formed in the side wall, which is close to the fixed shaft 4, a horizontal groove 11 matched with the sliding blocks is formed in the front inner side wall and the rear side wall of the sliding groove 10, and the horizontal groove 11 is communicated with the vertical grooves 23, the bottom end of the movable plate 20 is fixedly connected with an installation block 21, chalk is arranged in the installation block 21, a locking groove 24 is formed in the side wall, far away from the fixed shaft 4, of the movable plate 20, a locking rod 25 is arranged on the side wall of the fixed ruler plate II 5, the shape of the locking rod 25 is matched with that of the locking groove 24, the locking rod 25 penetrates through the side wall of the accommodating groove 22 and extends into the locking groove 24, the sliding block is arranged in a cylindrical mode, length marks are arranged on the fixed ruler plate I1 and the fixed ruler plate II 5, the locking rod 25 is pulled to move the movable plate 20 downwards, the installation block 21 extends out of the accommodating groove 22, the position of the movable plate 20 is adjusted, then the fixed sucker 9 is fixed onto the blackboard, the rotating device can be used for drawing circles, the fixed sucker 9 can be used for preventing the stitches from slipping, troubles are brought to drawing circles, and the whole device can be provided with a ruler, a compass and the compass at the same time, The functions of tools such as protractors are realized, so that a large number of tools do not need to be carried, frequent tool replacement is not needed during drawing, the use is more convenient, and the drawing teaching of teachers is facilitated.
In the invention, the adjusting block 19 is pulled upwards to enable the fixed block 17 to be separated from the fixed groove 18, the fixed ruler plate two 5 is rotated, the fixed ruler plate two 5 drives the fixed shaft 4 to rotate, so that the connecting shaft 13 fixedly connected with the fixed shaft 4 also rotates along with the fixed shaft, the ratchet wheel 14 is driven to rotate, the ratchet wheel teeth 12 and the adjusting block 19 also rotate together, the rotating angle of the fixed ruler plate two 5 can be clearly known through angle marking lines arranged on the fixed ruler plate one 1, when the fixed ruler plate two 5 rotates to a required angle, the adjusting block 19 is pressed downwards to enable the fixed block 17 to be inserted into the fixed groove 18, the adjusting block 19 is fixed, due to the action of the ratchet wheel 14 and the ratchet wheel teeth, the connecting shaft 13 can not rotate, so that the angle between the fixed ruler plate one 1 and the fixed ruler plate two 5 can be kept, the angle is beneficial to angle marking during teaching, the locking rod 25 is pulled to enable the moving plate 20 to move downwards, make installation piece 21 stretch out from accomodating groove 22, adjust the position of movable plate 20, then on fixing the sucking disc 9 is fixed to the blackboard, rotating device, can draw the circle, adopt fixing the sucking disc 9 to avoid the stitch to skid, it is troublesome to bring for drawing circularly, whole device can possess the function of ruler, compasses, instruments such as protractor simultaneously, thereby need not to carry a large amount of instruments, also need not frequent change instrument when drawing, it is more convenient to use, be favorable to teacher's drawing teaching.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a mathematical modeling teaching aid, includes fixed ruler board (1), its characterized in that, fixedly connected with a handle (2) on one side lateral wall of fixed ruler board (1), set up a spread groove (3) on the opposite side lateral wall of fixed ruler board (1), spread groove (3) internal rotation is connected with a fixed axle (4), fixed cover is equipped with a fixed ruler board two (5) on fixed axle (4), the upper and lower tip of fixed axle (4) runs through the upper and lower inside wall setting of fixed axle (4) respectively, the bottom department of fixed axle (4) is provided with a connecting block (6), a rotating groove (8) has been seted up to the inside of connecting block (6), rotating groove (8) internal rotation is connected with a rotatory piece (7) rather than assorted, rotatory piece (7) and the diapire fixed connection of fixed axle (4), the bottom wall of the connecting block (6) is fixedly connected with a fixed sucker (9), and the other end of the fixed shaft (4) is provided with an adjusting structure.
2. The mathematical modeling teaching aid of claim 1, wherein the adjusting structure comprises an adjusting block (19), the adjusting block (19) is arranged at the top end of the first fixed ruler plate (1), a plurality of fixed blocks (17) are fixedly connected to the bottom wall of the adjusting block (19), fixing grooves (18) corresponding to the plurality of fixed blocks (17) one by one are also formed in the upper wall of the first fixed ruler plate (1), the plurality of fixed blocks (17) are distributed in a central symmetry manner about the center of the bottom wall of the adjusting block (19), an adjusting cavity (16) is formed in the adjusting block (19), a connecting shaft (13) is fixedly connected between the upper inner side wall and the lower inner side wall of the adjusting cavity (16), a ratchet wheel (14) is sleeved on the outer side of the connecting shaft (13), and a fixed clamping block (15) is fixedly connected to the left end and the right end of the connecting shaft (13), the inner wall of the ratchet wheel (14) is also provided with a sliding clamping groove matched with the two fixed clamping blocks (15), the inner side wall of the adjusting cavity (16) is provided with ratchet wheel teeth (12), and the ratchet wheel teeth (12) are meshed with the adjusting cavity (16).
3. A mathematical modelling teaching aid according to claim 2, wherein the bottom end of the connecting shaft (13) is arranged through the lower inner wall of the adjustment chamber (16) and the bottom end of the connecting shaft (13) is fixedly connected with the top end of the fixed shaft (4), and the top end of the fixed ruler plate (1) is provided with an angle scale line arranged at the outer side of the adjustment block (19).
4. The mathematical modeling teaching aid as claimed in claim 1, wherein the bottom wall of the second fixed ruler plate (5) is provided with a storage groove (22), the storage groove (22) is arranged at one end of the second fixed ruler plate (5) far away from the fixed shaft (4), the storage groove (22) is connected with a movable plate (20) in a sliding way, the front and back side walls of the movable plate (20) are both fixedly connected with a sliding block, the front and back inner side walls of the storage groove (22) are also provided with vertical grooves (23) corresponding to the two sliding blocks, the side wall of the storage groove (22) close to the fixed shaft (4) is provided with a sliding groove (10), the front and back inner side walls of the sliding groove (10) are also provided with a horizontal groove (11) matched with the sliding block, and the horizontal groove (11) is communicated with the vertical grooves (23), the bottom end of the moving plate (20) is fixedly connected with an installation block (21), and chalk is arranged in the installation block (21).
5. The mathematical modeling teaching aid of claim 4, wherein a locking groove (24) has been seted up on the lateral wall of one side that fixed axle (4) was kept away from to the movable plate (20), be provided with a locking lever (25) on the lateral wall of fixed chi board two (5), the shape and the locking groove (24) phase-match of locking lever (25), locking lever (25) run through the lateral wall of accomodating groove (22) and stretch into the setting in locking groove (24), the sliding block is the cylindricity setting.
6. The mathematical modeling teaching aid of claim 1, wherein the other end of the grip (2) is fixedly connected with an anti-falling block, the diameter of the anti-falling block is larger than that of the grip (2), and the grip (2) is further provided with an anti-slip layer.
7. A mathematical modelling teaching aid as claimed in claim 1 wherein the first fixed scale plate (1) and the second fixed scale plate (5) are provided with length graduations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356472.7A CN113838345A (en) | 2021-11-16 | 2021-11-16 | Mathematical modeling teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356472.7A CN113838345A (en) | 2021-11-16 | 2021-11-16 | Mathematical modeling teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113838345A true CN113838345A (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111356472.7A Pending CN113838345A (en) | 2021-11-16 | 2021-11-16 | Mathematical modeling teaching aid |
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| CN (1) | CN113838345A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050204575A1 (en) * | 2004-01-27 | 2005-09-22 | Elizabeth Rosetti | Right perspective drawing tool |
| CN208498066U (en) * | 2018-04-25 | 2019-02-15 | 重庆科技学院 | Mathematical education plotting unit |
| CN209101936U (en) * | 2018-10-27 | 2019-07-12 | 广东粤能工程管理有限公司 | A kind of multi-function ruler for drawing |
| CN209485234U (en) * | 2018-12-02 | 2019-10-11 | 马斯高 | A kind of architectural design special measurement device |
| CN209869864U (en) * | 2019-04-02 | 2019-12-31 | 安康学院 | Multifunctional mathematic ruler for math teaching |
| CN211106601U (en) * | 2019-11-25 | 2020-07-28 | 赤峰学院 | Novel teaching aid for mathematical education |
| CN213565185U (en) * | 2020-11-23 | 2021-06-29 | 王京龙 | Mathematics teaching is with supplementary teaching device |
| CN214324754U (en) * | 2021-02-06 | 2021-10-01 | 南京工业职业技术大学 | A multi-functional angle square for mathematical education |
| CN214449824U (en) * | 2020-11-17 | 2021-10-22 | 菏泽学院 | Multifunctional mathematical teaching aid |
| CN214492296U (en) * | 2020-12-03 | 2021-10-26 | 周道锋 | Drawing teaching aid for mathematics |
| CN214523060U (en) * | 2021-03-26 | 2021-10-29 | 焦梅 | Diagraph for mathematics teaching |
-
2021
- 2021-11-16 CN CN202111356472.7A patent/CN113838345A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050204575A1 (en) * | 2004-01-27 | 2005-09-22 | Elizabeth Rosetti | Right perspective drawing tool |
| CN208498066U (en) * | 2018-04-25 | 2019-02-15 | 重庆科技学院 | Mathematical education plotting unit |
| CN209101936U (en) * | 2018-10-27 | 2019-07-12 | 广东粤能工程管理有限公司 | A kind of multi-function ruler for drawing |
| CN209485234U (en) * | 2018-12-02 | 2019-10-11 | 马斯高 | A kind of architectural design special measurement device |
| CN209869864U (en) * | 2019-04-02 | 2019-12-31 | 安康学院 | Multifunctional mathematic ruler for math teaching |
| CN211106601U (en) * | 2019-11-25 | 2020-07-28 | 赤峰学院 | Novel teaching aid for mathematical education |
| CN214449824U (en) * | 2020-11-17 | 2021-10-22 | 菏泽学院 | Multifunctional mathematical teaching aid |
| CN213565185U (en) * | 2020-11-23 | 2021-06-29 | 王京龙 | Mathematics teaching is with supplementary teaching device |
| CN214492296U (en) * | 2020-12-03 | 2021-10-26 | 周道锋 | Drawing teaching aid for mathematics |
| CN214324754U (en) * | 2021-02-06 | 2021-10-01 | 南京工业职业技术大学 | A multi-functional angle square for mathematical education |
| CN214523060U (en) * | 2021-03-26 | 2021-10-29 | 焦梅 | Diagraph for mathematics teaching |
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