CN112258906A - Intelligent teaching device based on internet - Google Patents
Intelligent teaching device based on internet Download PDFInfo
- Publication number
- CN112258906A CN112258906A CN202011283084.6A CN202011283084A CN112258906A CN 112258906 A CN112258906 A CN 112258906A CN 202011283084 A CN202011283084 A CN 202011283084A CN 112258906 A CN112258906 A CN 112258906A
- Authority
- CN
- China
- Prior art keywords
- teaching device
- device main
- teaching
- main part
- ruler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Abstract
The invention provides an intelligent teaching device based on the Internet, and mainly relates to the field of teaching devices. Intelligent teaching device based on internet, including the teaching device main part, install the blackboard in the teaching device main part, sliding connection vertical chi in the teaching device main part, the inside sliding connection adjustable ruler of vertical chi, the groove of stretching out is seted up to teaching device main part both sides, and teaching rod standing groove has been seted up to teaching device main part one side, and teaching device main part keeps away from teaching rod standing groove one side and has seted up the teaching aid and place the mouth, the anterior one side of teaching device main part is equipped with the control cabinet, and teaching device main part top sets up electronic curtain device, and the blackboard rear side sets up the centre sill in the teaching device main part, centre sill sliding connection elevating gear. The invention has the beneficial effects that: the required graph line can be drawn at any position on the blackboard through the vertical ruler and the movable ruler, and the vertical ruler and the movable ruler are convenient to store; the control console is convenient for regulating and controlling projection equipment, camera equipment and the like.
Description
Technical Field
The invention mainly relates to the field of teaching devices, in particular to an intelligent teaching device based on the Internet.
Background
The internet brings great convenience to our education, and the teaching device for display is often arranged in a classroom with the help of the internet and multimedia teaching, so that a great deal of convenience can be brought to the teaching process, and some inconvenient places are also existed. In the internet teaching process, the projection is a commonly used teaching display mode, the camera equipment which is very popular is convenient for recording the classroom, the existing projection equipment or camera equipment is generally adjusted by a remote controller, the remote controller is required to be aligned with the equipment behind the body during adjustment, and the projection effect or the camera effect in front of the body is observed in real time to adjust, so that the use is inconvenient. A teaching device ubiquitous for the show in the middle of the teaching field of various, this teaching device is a display device for student's show education content, and current teaching device altitude mixture control is inconvenient when using, can not accomodate supplementary teaching aid.
In addition to PPT teaching, a blackboard is often used in a classroom, and particularly, various drawing tables and the like are often required to be drawn on the blackboard during teaching of an engineering subject. At present, a drawing line table is generally drawn by means of mathematical tools such as a ruler, drawing precision can be greatly improved by using a ruler plate, but drawing efficiency is low, and the size of an included angle is difficult to determine when an angle line is drawn.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an intelligent teaching device based on the internet, which can draw a required graph line on any position of a blackboard through a vertical ruler and a movable ruler which are arranged in a main body of the teaching device, and the movable range of the movable ruler on the surface of the blackboard is greatly enlarged due to the extension groove. The adjusting handle makes the movable ruler convenient to use, and the two handle openings make the vertical ruler and the movable ruler convenient to store. Teaching pole standing groove is convenient for place and the teaching pole of taking, and the teaching aid is convenient for accomodate the teaching aid in the teaching aid is placed the mouth. The control console arranged on one side of the teaching device main body is convenient for regulating and controlling the height of the projection equipment, the camera equipment and the teaching device main body, the electric curtain device and the like.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an intelligent teaching device based on the Internet comprises a teaching device main body, wherein a blackboard is installed in the teaching device main body, a vertical ruler is connected in the teaching device main body in a sliding mode, a movable ruler is connected in the vertical ruler in a sliding mode, extending grooves are formed in two sides of the teaching device main body, a teaching rod placing groove is formed in one side of the teaching device main body, a teaching aid placing opening is formed in one side, away from the teaching rod placing groove, of the teaching device main body, a control console is arranged on one side of the front portion of the teaching device main body, an electric curtain device is arranged on the top of the teaching device main body, a middle beam is arranged on the rear side of the blackboard in the teaching device main body, the upper end and the lower end of the middle beam are fixedly connected with the teaching device main body, a rack is fixedly arranged on the middle beam, the middle beam is connected with, place big blackboard eraser in the opening, the inside little class that is equipped with magnet of teaching device main part surface adsorption is wiped, set up handle opening one in the teaching device main part, install projecting apparatus and camera equipment on the wall in the teaching device main part front side top classroom respectively, teaching device main part rear portion teaching aid is placed a mouthful one side and is set up the baffle.
The novel multifunctional ruler is characterized in that a plurality of observation ports are formed in the vertical ruler, a second handle opening is formed in the middle lower portion of the vertical ruler, a T-shaped groove is formed in the vertical ruler, fixing blocks are arranged at two ends of the vertical ruler, and pulleys are arranged on the fixing blocks.
The adjustable ruler is characterized in that an angle scale is arranged in the middle of the upper portion of the adjustable ruler, a chuck is arranged on the angle scale, and an adjusting handle is arranged on one side of the adjustable ruler.
The electric curtain device comprises a curtain driving device, and the curtain driving device is connected with the projection curtain in a rotating mode.
The embedded fixed mounting of elevating gear is in the wall body, elevating gear includes driving motor, set up initiative bevel gear in the driving motor pivot, driving motor outside is through support fixed connection transmission, transmission is including connecting the casing, connect the internal rotation of casing and connect the worm wheel, connect the internal rotation of casing and connect the worm, worm wheel and worm meshing, worm one end is equipped with driven bevel gear, initiative bevel gear and driven bevel gear meshing.
Compared with the prior art, the invention has the beneficial effects that:
the invention can draw a required graph line at any position on the blackboard through the vertical ruler and the movable ruler which are arranged in the teaching device main body, and the extending groove greatly improves the moving range of the movable ruler on the surface of the blackboard. The adjusting handle makes the movable ruler convenient to use, and the two handle openings make the vertical ruler and the movable ruler convenient to store. Teaching pole standing groove is convenient for place and the teaching pole of taking, and the teaching aid is convenient for accomodate the teaching aid in the teaching aid is placed the mouth. The control console arranged on one side of the teaching device main body is convenient for regulating and controlling the height of the projection equipment, the camera equipment and the teaching device main body, the electric curtain device and the like.
Drawings
FIG. 1 is a schematic diagram of a first perspective structure of the present invention;
FIG. 2 is a schematic view of the front view structure of the teaching device when the movable ruler is retracted;
FIG. 3 is a schematic structural view of the teaching device with the movable ruler and the vertical ruler accommodated in the main body;
FIG. 4 is a schematic structural view of the movable rule of the present invention when it is extended from the extension slot;
FIG. 5 is a schematic view of the rear structure of the present invention;
FIG. 6 is a schematic view of the structure of the movable ruler of the present invention;
FIG. 7 is a schematic view of the vertical scale of the present invention;
FIG. 8 is a schematic view of a part of the structure of the driving motor of the present invention;
FIG. 9 is a schematic view of the transmission of the present invention;
FIG. 10 is a schematic view of a console regulated projector interface of the present invention; .
Reference numerals shown in the drawings: 1. a teaching device main body; 2. a blackboard; 3. a vertical ruler; 4. a movable ruler; 5. extending out of the groove; 6. a teaching rod placing groove; 7. a teaching aid placing port; 8. a console; 9. an electric curtain device; 10. a center sill; 11. a rack; 12. a lifting device; 13. a slide rail; 14. an opening; 15. a large board eraser; 16. wiping in a small class; 17. the handle is provided with a first opening; 18. a partition plate; 31. a viewing port; 32. a second handle opening; 33. a T-shaped groove; 34. a fixed block; 35. a pulley; 41. an angle scale; 42. a chuck; 43. adjusting the handle; 91. a curtain driving device; 92. a projection screen; 121. a drive motor; 122. a drive bevel gear; 123. a transmission device; 124. a housing; 125. a worm gear; 126. a worm; 127. a driven bevel gear.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
With reference to the attached drawings 1-10, an intelligent teaching device based on the Internet comprises a teaching device main body 1, wherein a blackboard 2 is installed in the teaching device main body 1, a vertical ruler 3 is connected in the teaching device main body 1 in a sliding manner, a movable ruler 4 is connected in the vertical ruler 3 in a sliding manner, extension grooves 5 are formed in two sides of the teaching device main body 1, a teaching rod placing groove 6 is formed in one side of the teaching device main body 1, a teaching aid placing port 7 is formed in one side of the teaching device main body 1, which is far away from the teaching rod placing groove 6, a control console 8 is arranged on one side of the front part of the teaching device main body 1, an electric curtain device 9 is arranged at the top of the teaching device main body 1, a middle beam 10 is arranged at the rear side of the blackboard 2 in the teaching device main body 1, the upper end and the lower end of the middle beam 10 are fixedly connected with the teaching device, 1 rear portion both sides of teaching device main part 1 set up slide rail 13 respectively, 1 one side of teaching device main part is equipped with opening 14, place big blackboard eraser 15 in the opening 14, 16 is wiped to the inside little class that is equipped with magnet of 1 surface adsorption of teaching device main part, set up handle opening 17 in the teaching device main part 1, install projecting apparatus and camera equipment on the wall in the upper classroom of 1 front sides of teaching device main part respectively, 1 rear portion teaching aid of teaching device main part is placed 7 one side and is set up baffle 18.
The vertical ruler can only slide transversely along the teaching device main body, and the direction is always kept vertical. Teaching pole standing groove is provided with two, and it is fixed with the teaching pole to be equipped with rubber buckle structure in the teaching pole standing groove, and two teaching pole standing groove middle parts are equipped with the mouth of taking. Mouth intercommunication blackboard rear side space is placed to the teaching aid, can be used to place the teaching aid, and the baffle can prevent to place the too dark inconvenient elevating gear of taking of teaching aid and prevent that the teaching aid from interfering. The movable ruler can stretch out the teaching device main part through stretching out the groove outside, very big increase the home range of movable ruler in the teaching device main part, be convenient for assist the drawing. The middle beam ensures that the rack is stably matched with the lifting device. The slide rail is used for connecting the teaching device main body on the wall in a sliding manner. The lifting device can lift the teaching device main body under the control of the control console so as to adapt to the condition that teachers or students with different heights write or adjust the watching height and the like at different positions of the blackboard. The two sides of the big eraser handle are provided with the resisting plates which are matched with the opening, and the resisting plates are matched with the opening to fix the big eraser. Be equipped with the cavity host computer in the multimedia device in the classroom, the control cabinet surface is tangible display screen, and the control cabinet is through controlling the host computer and then regulating and control projecting apparatus and camera equipment in the wiFi internet access in the classroom, for example can open the classroom and record and adjust the picture of recording through the control cabinet, can open projection and adjustment projection picture etc. through the control cabinet.
The vertical ruler 3 is provided with a plurality of observation ports 31, the middle lower part of the vertical ruler 3 is provided with a second handle opening 32, the vertical ruler 3 is provided with a T-shaped groove 33, two ends of the vertical ruler 3 are provided with fixed blocks, and the fixed blocks 34 are provided with pulleys 35. An angle scale 41 is arranged in the middle of the upper portion of the movable ruler 4, a chuck 42 is arranged on the angle scale 41, and an adjusting handle 43 is arranged on one side of the upper portion of the movable ruler 4. The included angle between the movable ruler and the vertical ruler can be determined by observing the angle of the angle scale through the observation port, and the vertical ruler can only be in the vertical direction, so that the size of any included angle between the surface of the blackboard and the horizontal line of the movable ruler can be determined. Vertical chi and movable ruler use the back and fill in handle opening two with adjustment handle, and the vertical chi of slip further fills in handle opening one with adjustment handle, and vertical chi and movable ruler are accomodate in the teaching device main part this moment. The teaching device is characterized in that a groove corresponding to the pulley is formed in the teaching device body, and the pulley slides in the groove.
The electric curtain device 9 comprises a curtain driving device 91, and a projection curtain 92 is rotatably connected in the curtain driving device 91. When the projection screen is used, the screen driving device can automatically put down and put back the projection screen under the control of the console.
The lifting device 12 is fixedly installed in a wall body in an embedded mode, the lifting device 12 comprises a driving motor 121, a driving bevel gear 122 is arranged on a rotating shaft of the driving motor 121, the driving motor 121 is externally and fixedly connected with a transmission device 123 through a support, the transmission device 123 comprises a connecting shell 124, a worm wheel 125 is rotatably connected in the connecting shell 124, a worm 126 is rotatably connected in the connecting shell 124, the worm wheel 125 is meshed with the worm 126, a driven bevel gear 127 is arranged at one end of the worm, and the driving bevel gear 122 is meshed with the driven bevel gear 124.
The lifting device can drive the teaching device main body to a proper height. The power transmission route that elevating gear drive teaching device main part goes up and down does: driving motor → driving bevel gear → driven bevel gear → worm wheel → rack → middle beam → teaching device body. Because the worm gear structure can only transmit power in one way, the height of the teaching device main body can not be automatically changed when the driving motor does not work.
Claims (5)
1. The utility model provides an intelligence teaching device based on internet, includes teaching device main part (1), its characterized in that: the teaching device is characterized in that a blackboard (2) is installed in a teaching device main body (1), a vertical ruler (3) is connected in the teaching device main body (1) in a sliding mode, a movable ruler (4) is connected in the vertical ruler (3) in a sliding mode, stretching grooves (5) are formed in two sides of the teaching device main body (1), a teaching rod placing groove (6) is formed in one side of the teaching device main body (1), a teaching aid placing opening (7) is formed in one side, away from the teaching rod placing groove (6), of the teaching device main body (1), a control console (8) is arranged on one side of the front portion of the teaching device main body (1), an electric curtain device (9) is arranged on the top of the teaching device main body (1), a middle beam (10) is arranged on the rear side of the blackboard (2) in the teaching device main body (1), the teaching device main body (1) is fixedly connected with the upper, centre sill (10) sliding connection elevating gear (12), teaching device main part (1) rear portion both sides set up slide rail (13) respectively, teaching device main part (1) one side is equipped with opening (14), place big blackboard eraser (15) in opening (14), the inside little class that is equipped with magnet of teaching device main part (1) surface adsorption wipes (16), set up handle opening one (17) on teaching device main part (1), install projecting apparatus and camera equipment on the wall in teaching device main part (1) front side top classroom respectively, teaching device main part (1) rear portion teaching aid is placed mouthful (7) one side and is set up baffle (18).
2. The intelligent internet-based teaching device of claim 1, wherein: the novel multifunctional ruler is characterized in that a plurality of observation ports (31) are formed in the vertical ruler (3), a second handle opening (32) is formed in the middle lower portion of the vertical ruler (3), a T-shaped groove (33) is formed in the vertical ruler (3), fixing blocks (34) are arranged at two ends of the vertical ruler (3), and pulleys (35) are arranged on the fixing blocks (34).
3. The intelligent internet-based teaching device of claim 1, wherein: the middle part sets up angle scale (41) on movable ruler (4), set up chuck (42) on angle scale (41), one side sets up adjustment handle (43) on movable ruler (4).
4. The intelligent internet-based teaching device of claim 1, wherein: the electric curtain device (9) comprises a curtain driving device (91), and the projection curtain (92) is rotatably connected in the curtain driving device (91).
5. The intelligent internet-based teaching device of claim 1, wherein: the lifting device (12) is fixedly installed in a wall body in an embedded mode, the lifting device (12) comprises a driving motor (121), a driving bevel gear (122) is arranged on a rotating shaft of the driving motor (121), the driving motor (121) is externally and fixedly connected with a transmission device (123) through a support, the transmission device (123) comprises a connecting shell (124), a worm wheel (125) is rotatably connected in the connecting shell (124), a worm (126) is rotatably connected in the connecting shell (124), the worm wheel (125) is meshed with the worm (126), a driven bevel gear (127) is arranged at one end of the worm, and the driving bevel gear (122) is meshed with the driven bevel gear (124).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011283084.6A CN112258906A (en) | 2020-11-16 | 2020-11-16 | Intelligent teaching device based on internet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011283084.6A CN112258906A (en) | 2020-11-16 | 2020-11-16 | Intelligent teaching device based on internet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112258906A true CN112258906A (en) | 2021-01-22 |
Family
ID=74266909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011283084.6A Pending CN112258906A (en) | 2020-11-16 | 2020-11-16 | Intelligent teaching device based on internet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112258906A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008296564A (en) * | 2007-05-30 | 2008-12-11 | Plus Vision Corp | Electronic blackboard apparatus |
| CN204488315U (en) * | 2015-03-27 | 2015-07-22 | 李同磊 | Multifunctional math teaching aid |
| CN204701328U (en) * | 2015-05-05 | 2015-10-14 | 河北工程技术高等专科学校 | A kind of mathematical education blackboard |
| CN205381058U (en) * | 2015-12-17 | 2016-07-13 | 王秀梅 | Multifunctional blackboard is used in teaching |
| CN208232659U (en) * | 2018-02-11 | 2018-12-14 | 陈春妮 | A kind of teaching aid of mathematical education drafting function curve |
| CN208906659U (en) * | 2018-02-05 | 2019-05-28 | 齐齐哈尔工程学院 | A kind of turnable fluorescence blackboard of ideology and politics teaching |
| CN209691123U (en) * | 2018-11-24 | 2019-11-26 | 田又萌 | Multimedia device is used in a kind of teaching |
| CN210181882U (en) * | 2019-06-12 | 2020-03-24 | 上饶师范学院 | Novel teaching board for geometric mathematics teaching |
| CN210553844U (en) * | 2019-07-15 | 2020-05-19 | 李清洁 | Convenient to use's teaching aid |
| CN210581723U (en) * | 2019-08-15 | 2020-05-22 | 齐齐哈尔工程学院 | Lifting blackboard |
| CN211087601U (en) * | 2019-11-17 | 2020-07-24 | 阜阳幼儿师范高等专科学校 | Teaching board for music teaching |
-
2020
- 2020-11-16 CN CN202011283084.6A patent/CN112258906A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008296564A (en) * | 2007-05-30 | 2008-12-11 | Plus Vision Corp | Electronic blackboard apparatus |
| CN204488315U (en) * | 2015-03-27 | 2015-07-22 | 李同磊 | Multifunctional math teaching aid |
| CN204701328U (en) * | 2015-05-05 | 2015-10-14 | 河北工程技术高等专科学校 | A kind of mathematical education blackboard |
| CN205381058U (en) * | 2015-12-17 | 2016-07-13 | 王秀梅 | Multifunctional blackboard is used in teaching |
| CN208906659U (en) * | 2018-02-05 | 2019-05-28 | 齐齐哈尔工程学院 | A kind of turnable fluorescence blackboard of ideology and politics teaching |
| CN208232659U (en) * | 2018-02-11 | 2018-12-14 | 陈春妮 | A kind of teaching aid of mathematical education drafting function curve |
| CN209691123U (en) * | 2018-11-24 | 2019-11-26 | 田又萌 | Multimedia device is used in a kind of teaching |
| CN210181882U (en) * | 2019-06-12 | 2020-03-24 | 上饶师范学院 | Novel teaching board for geometric mathematics teaching |
| CN210553844U (en) * | 2019-07-15 | 2020-05-19 | 李清洁 | Convenient to use's teaching aid |
| CN210581723U (en) * | 2019-08-15 | 2020-05-22 | 齐齐哈尔工程学院 | Lifting blackboard |
| CN211087601U (en) * | 2019-11-17 | 2020-07-24 | 阜阳幼儿师范高等专科学校 | Teaching board for music teaching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209560742U (en) | A kind of sin cos functions two-dimensional projection apparatus for demonstrating | |
| CN211455094U (en) | Assembled building training demonstration device | |
| CN215347873U (en) | Portable multimedia teaching blackboard | |
| CN112258906A (en) | Intelligent teaching device based on internet | |
| CN216202059U (en) | Teaching is with supplementary education teaching device on net | |
| CN213487587U (en) | Interactive remote teaching platform | |
| CN214147131U (en) | Campus public communication equipment with adjustable display screen angle | |
| CN216220623U (en) | Rehearsal device that building engineering cost was used | |
| CN212990431U (en) | Vocabulary simulation training device for english teaching | |
| CN212584683U (en) | Multimedia teaching is with projecting apparatus convenient to adjust | |
| CN111692473A (en) | Classroom interactive teaching presentation device | |
| CN220796066U (en) | Control device for teaching | |
| CN213333427U (en) | Automatic foldable sliding rail | |
| CN212878674U (en) | Multi-functional education is with show board | |
| CN215954579U (en) | Interactive display device of chinese teaching | |
| CN216619239U (en) | Wall-hanging image broadcast mounting bracket in politics classroom of high school | |
| CN212219743U (en) | Teaching board for mathematics teaching | |
| CN210743234U (en) | Multimedia teaching all-in-one machine | |
| CN219133676U (en) | Three-dimensional angle adjustment writing board for preschool education | |
| CN214042641U (en) | Display device is used in mathematics and information science teaching | |
| CN219493720U (en) | Recorder convenient to adjust for calculation science | |
| CN213429020U (en) | Art desk with storage structure | |
| CN214222622U (en) | Projecting apparatus support is used in teaching | |
| CN211124503U (en) | Drawing board is painted to hand for planar design teaching | |
| CN215035931U (en) | Remote maintenance diagnosis device for numerical control machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |