CN2590093Y - Teaching aid for demonstrating revolving solid by plane - Google Patents
Teaching aid for demonstrating revolving solid by plane Download PDFInfo
- Publication number
- CN2590093Y CN2590093Y CN 02294584 CN02294584U CN2590093Y CN 2590093 Y CN2590093 Y CN 2590093Y CN 02294584 CN02294584 CN 02294584 CN 02294584 U CN02294584 U CN 02294584U CN 2590093 Y CN2590093 Y CN 2590093Y
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- teaching aid
- plane
- utility
- model
- 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.)
- Expired - Fee Related
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- Instructional Devices (AREA)
Abstract
The utility model relates to a teaching aid for demonstrating revolving solid by plane. The utility model relates to a teaching aid which can help students to directly establish a concept that a plane is converted into a solid. The utility model comprises a box body, a rotating shaft, a locking device, a power supply and various symmetrical plane figures, wherein, an electric machine in the box body is connected with the rotating shaft, a sleeve barrel is respectively arranged on central lines of various symmetrical plane figures, and the sleeve barrels and the rotating shaft are provided with devices which are mutually locked. When the utility model is used for demonstration, the sleeve barrel which has any shape of the teaching aid is sheathed on the rotating shaft on the box body, the teaching aid is locked by the locking device, the power supply is turned on, the electric machine starts to work, the rotating shaft is driven to rotate, the teaching aid sheathed on the rotating shaft rotates following the rotating shaft, and the teaching aid is changed into a solid from a plane. The utility model can directly help students to establish a concept of a solid shape and is good for teaching.
Description
Technical field:
The utility model relates to a kind of teaching aid, particularly a kind ofly demonstrates the teaching aid that the plane is rotated into three-dimensional shape.
Background technology:
China is from the middle school, and school all will offer geometry curriculum.Some student by learning plane geometry, turns to the stage of study solid geometry in study how much classes, three-dimensional notion always can not established, and how can not to imagine to become cylinder, cone from rectangle, triangle, trapezoidal.The teaching aid that current also neither one is good is very intuitively helped students and is gone to understand, and gives the study of a part of student's solid geometry, brings many difficulties.
Summary of the invention:
The utility model aims to provide the teaching aid that a kind of plane is rotated into the bodily form, by to demonstration of the present utility model, can help students, establishes very intuitively, is become the notion of three-dimensional shape by plane conversion.
The utility model comprises casing, rotating shaft, locking device, motor, the planar graph of various symmetries.
Wherein the motor in the casing links to each other with rotating shaft.The center line of the planar graph of various symmetries is provided with sleeve; Sleeve and rotating shaft are provided with the device of mutual locking;
This planar graph can be the planar graph of triangle, rectangle, square, trapezoidal any symmetry, when this planar graph is carried out teaching demonstration, the sleeve of this planar graph is inserted in the rotating shaft, pin with locking device, energized then, the motor entry into service drives the rotating shaft rotation.At this moment, be enclosed within the also and then rotation of teaching aid in the rotating shaft, become three-dimensional shape by flat shape.Very directly perceived, can help the very fast notion of establishing the bodily form of students, help teaching.
In sum, the utility model is a kind of teaching aid that the plane is rotated into three-dimensional shape of demonstrating.By to demonstration of the present utility model, can help students, establish the notion that becomes the bodily form by plane conversion very intuitively.
Description of drawings:
Fig. 1 is a general illustration of the present utility model.
Among the figure:
The 1-casing, 2-rotating shaft, 3-locking device, 4-motor, the planar graph of the various symmetries of 5-.
Embodiment:
Certain middle school is to how much classes on the students, helps students to be familiar with assorted cone when petty.In order to make students more directly perceived, they have used the utility model.The sleeve of the plane triangle of at first an iron plate being made during demonstration 5 is enclosed within the rotating shaft 2 on the casing 1, pins teaching aid 5 with locking device 3, energized, and motor 4 entrys into service, thus drive rotating shaft 2 rotations.At this moment, be enclosed within the also and then rotation of teaching aid 5 in the rotating shaft 2, teaching aid becomes a cone by triangle.Can help students very intuitively, the shape of very fast understanding cone.Help teaching.
Claims (1)
1, a kind ofly demonstrate the teaching aid that the plane is rotated into three-dimensional shape, it is characterized in that it comprises casing, rotating shaft, locking device, motor, the planar graph of various symmetries; Wherein the motor in the casing links to each other with rotating shaft; The center line of the planar graph of various symmetries is provided with sleeve; Sleeve and rotating shaft are provided with the device of mutual locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294584 CN2590093Y (en) | 2002-12-30 | 2002-12-30 | Teaching aid for demonstrating revolving solid by plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294584 CN2590093Y (en) | 2002-12-30 | 2002-12-30 | Teaching aid for demonstrating revolving solid by plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590093Y true CN2590093Y (en) | 2003-12-03 |
Family
ID=33751988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02294584 Expired - Fee Related CN2590093Y (en) | 2002-12-30 | 2002-12-30 | Teaching aid for demonstrating revolving solid by plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590093Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956089A (en) * | 2014-05-10 | 2014-07-30 | 周维保 | Rotating body teaching demonstration device |
| WO2015169079A1 (en) * | 2014-05-08 | 2015-11-12 | 崔群 | Figure change demonstration device for surfaces rotating to form solids |
-
2002
- 2002-12-30 CN CN 02294584 patent/CN2590093Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169079A1 (en) * | 2014-05-08 | 2015-11-12 | 崔群 | Figure change demonstration device for surfaces rotating to form solids |
| CN103956089A (en) * | 2014-05-10 | 2014-07-30 | 周维保 | Rotating body teaching demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |