CN215527011U - Teaching is with learning angle ware - Google Patents
Teaching is with learning angle ware Download PDFInfo
- Publication number
- CN215527011U CN215527011U CN202121410850.0U CN202121410850U CN215527011U CN 215527011 U CN215527011 U CN 215527011U CN 202121410850 U CN202121410850 U CN 202121410850U CN 215527011 U CN215527011 U CN 215527011U
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- Prior art keywords
- disc
- pointer
- circular surface
- angle
- teaching
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- 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.)
- Expired - Fee Related
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- 238000005259 measurement Methods 0.000 claims description 6
- 239000011087 paperboard Substances 0.000 claims description 2
- 230000001154 acute effect Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a teaching protractor, which belongs to the technical field of teaching aids and comprises a first disc and a second disc, wherein one circular surface of the first disc is connected with one circular surface of the second disc, the axis of the first disc is superposed with the axis of the second disc, angle measuring scales are arranged on the outer edge of the first disc, which deviates from the circular surface of the second disc, and the outer edge of the second disc, which deviates from the circular surface of the first disc, the circular surface of the second disc, which deviates from the first disc, is connected with a first pointer, and the circular surface of the first disc, which deviates from the second disc, is connected with a second pointer. The utility model can help students understand the concept of the angle; sensing the size change of the angle and comparing the size of the angle; distinguishing acute angles, right angles, obtuse angles, straight angles and peripheral angles; and a foundation is laid for further learning the knowledge of the protractor and the angle drawing of the protractor.
Description
Technical Field
The utility model relates to a protractor, in particular to a protractor for teaching, and belongs to the technical field of teaching aids.
Background
In primary school mathematics teaching, a teacher often helps students recognize corners by drawing a pattern of corners on a blackboard. In the process of learning an angle, pupils usually draw the angle through a conventional semicircular protractor.
The scale range of the traditional protractor is 0-180 degrees, which can cause that students using the traditional protractor cannot directly draw and measure angles exceeding 180 degrees through the traditional protractor, so that the learning process is not visual enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a protractor for teaching, which can help students understand the concept of the angle; sensing the size change of the angle and comparing the size of the angle; distinguishing acute angles, right angles, obtuse angles, straight angles and peripheral angles; and a foundation is laid for further learning the knowledge of the protractor and the angle drawing of the protractor.
The utility model achieves the purpose through the following technical scheme, and the teaching protractor comprises a first disc and a second disc, wherein one circular surface of the first disc is connected with one circular surface of the second disc, the axis of the first disc is superposed with the axis of the second disc, angle measurement scales are arranged on the outer edge of the circular surface of the first disc, which is deviated from the second disc, and the outer edge of the circular surface of the second disc, which is deviated from the first disc, respectively, the angle measurement scales are arranged on the outer edge of the circular surface of the first disc, which is deviated from the second disc, and the circular surface of the second disc, which is deviated from the first disc, is connected with a first pointer, the circular surface of the first disc, which is deviated from the second disc, is connected with a second pointer, and one end of the first pointer in the length direction, one end of the second pointer in the length direction, the central part of the first disc and the central part of the second disc are connected with one another through pins.
Preferably, the angle measuring scale ranges from 0 to 360 degrees, and the minimum unit of the angle measuring scale is 1 degree.
Preferably, the first pointer and the second pointer are both sheet-shaped structures, and the outer ends of the first pointer and the second pointer are pointed.
Preferably, in order to facilitate reading by a user, reading holes are formed in the ends, far away from the foot nails, of the first pointer and the second pointer.
Preferably, the inner diameter of the reading hole is 1-2 cm.
Preferably, the first disc, the second disc, the first pointer and the second pointer are all made of cardboard.
The utility model has the beneficial effects that:
1. the angle reading device is provided with a first disc, a second disc, a foot nail, a first pointer, a second pointer and a reading hole, the first pointer and the second pointer are rotated by shifting the first pointer and the second pointer, so that the first pointer and the second pointer point to different scale marks, and the reading hole is convenient to read, so that students can understand the concept of an angle, the size of a feeling angle is changed, the sizes of the angles are compared, an acute angle, a right angle, an obtuse angle, a flat angle and a circumferential angle are distinguished, and a foundation is laid for further learning the knowledge of a protractor and the angle drawing of the protractor;
2. the utility model has the advantages of easy-to-obtain manufacturing materials, low manufacturing cost and convenience for students to manufacture.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
fig. 4 is a schematic structural diagram of the first pointer in fig. 1 according to the present invention.
In the figure: 1 a first disc, 2 a second disc, 3 pins, 4 a first pointer, 5 a second pointer and 6 reading holes.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a protractor for teaching comprises a first disc 1 and a second disc 2, wherein a circular surface of the first disc 1 is connected with a circular surface of the second disc 2, an axis of the first disc 1 coincides with an axis of the second disc 2, angle measurement scales are arranged on an outer edge of the circular surface of the first disc 1 departing from the second disc 2 and an outer edge of the circular surface of the second disc 2 departing from the first disc 1, a first pointer 4 is connected to the circular surface of the second disc 2 departing from the first disc 1, a second pointer 5 is connected to the circular surface of the first disc 1 departing from the second disc 2, and one end of the first pointer 4 in the length direction, one end of the second pointer 5 in the length direction, a central part of the first disc 1 and a central part of the second disc 2 are connected with each other through a foot pin 3.
As a technical optimization scheme of the utility model, the range of the angle measurement scale is 0-360 degrees, and the minimum unit of the angle measurement scale is 1 degree.
As a technical optimization scheme of the utility model, the first pointer 4 and the second pointer 5 are both of sheet structures, and the outer ends of the first pointer 4 and the second pointer 5 are pointed.
As a technical optimization scheme of the utility model, the ends of the first pointer 4 and the second pointer 5 far away from the foot nail 3 are both provided with reading holes 6.
As a technical optimization scheme of the utility model, the inner diameter of the reading hole 6 is 1-2 cm.
As a technical optimization scheme of the utility model, the first disc 1, the second disc 2, the first pointer 4 and the second pointer 5 are all made of paperboards, and the outer ends of the first pointer 4 and the second pointer 5 are designed to be pointed.
When the utility model is used: the first pointer 4 and the second pointer 5 are shifted to enable the first pointer 4 and the second pointer 5 to rotate, so that the first pointer 4 and the second pointer 5 point to different scale marks, the reading hole 6 facilitates reading, and therefore the angle reading device can help students to understand the angle concept; sensing the size change of the angle and comparing the size of the angle; distinguishing acute angles, right angles, obtuse angles, straight angles and peripheral angles; and a foundation is laid for further learning the knowledge of the protractor and the angle drawing of the protractor. The utility model has the advantages of easy-to-obtain manufacturing materials, low manufacturing cost and convenience for students to manufacture.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A teaching corner learning device, comprising a first disc (1) and a second disc (2), characterized in that: one circular surface of the first disc (1) is connected with one circular surface of the second disc (2), and the axis of the first disc (1) and the axis of the second disc (2) are coincident, the outer edge of the circular surface of the first disc (1) departing from the second disc (2) and the outer edge of the circular surface of the second disc (2) departing from the first disc (1) are both provided with angle measurement scales, the circular surface of the second disc (2) departing from the first disc (1) is connected with a first pointer (4), the circular surface of the first disc (1) departing from the second disc (2) is connected with a second pointer (5), one end of the first pointer (4) along the length direction, one end of the second pointer (5) along the length direction, the central part of the first disc (1) and the central part of the second disc (2) are connected with each other through a foot pin (3).
2. A teaching corner learning device according to claim 1, wherein: the range of the angle measuring scale is 0-360 degrees, and the minimum unit of the angle measuring scale is 1 degree.
3. A teaching corner learning device according to claim 1, wherein: the first pointer (4) and the second pointer (5) are both of sheet structures, and the outer ends of the first pointer (4) and the second pointer (5) are pointed ends.
4. A teaching corner learning device according to claim 1, wherein: and reading holes (6) are formed in the ends, far away from the foot nails (3), of the first pointer (4) and the second pointer (5).
5. A teaching corner learning device according to claim 4, wherein: the inner diameter of the reading hole (6) is 1-2 cm.
6. A teaching corner learning device according to claim 1, wherein: the first disc (1), the second disc (2), the first pointer (4) and the second pointer (5) are all made of paperboards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121410850.0U CN215527011U (en) | 2021-06-24 | 2021-06-24 | Teaching is with learning angle ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121410850.0U CN215527011U (en) | 2021-06-24 | 2021-06-24 | Teaching is with learning angle ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527011U true CN215527011U (en) | 2022-01-14 |
Family
ID=79809979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121410850.0U Expired - Fee Related CN215527011U (en) | 2021-06-24 | 2021-06-24 | Teaching is with learning angle ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215527011U (en) |
-
2021
- 2021-06-24 CN CN202121410850.0U patent/CN215527011U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20220114 |