CN2238462Y - T shape combined teaching model - Google Patents
T shape combined teaching model Download PDFInfo
- Publication number
- CN2238462Y CN2238462Y CN 95209350 CN95209350U CN2238462Y CN 2238462 Y CN2238462 Y CN 2238462Y CN 95209350 CN95209350 CN 95209350 CN 95209350 U CN95209350 U CN 95209350U CN 2238462 Y CN2238462 Y CN 2238462Y
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- China
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- hole
- space
- chi
- horizontal edge
- ruler
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Abstract
The utility model discloses a teaching aid, which can demonstrate the change of angular size and compose a mode of a rectangular coordinate system in a space. The teaching aid is composed of two T-shaped rulers A and B. The junction of a transversal and a vertical sides of the ruler A is provided with a through hole, and the diameter of the through hole is bigger than the width of a transverse and a vertical sides of the ruler B. When the transverse side or the vertical side of the ruler B is respectively inserted into the through hole of the ruler B, the change of the angular size can be demonstrated or the mode of the rectangular coordinate system in the space can be combined into. When the two rulers are separated, the relationship between a midline of the space and a surface can be demonstrated. Furthermore, the two rulers are combined differently, change can be multifarious, which is good for edifying thinking.
Description
The utility model relates to a kind of teaching aid, particularly can demonstrate the size variation at angle, expressive space center line, face relation intuitively, edifies a kind of teaching aid of student thought.
In the teaching of trigonometric function and space geometry, usually relate to the notion of the aspects such as relation between the point, line, surface in variation, volume coordinate and the space of the size at angle.In the teaching, the relevant figure that normally draws in the plane helps the student to understand at present, because the limitation of two dimensional surface, the student contacts three dimensions notion, often indigestion for the first time in addition.
The purpose of this utility model provides a kind of teaching aid, ingenious combination and operation by this teaching aid, can show intuitively the angle size variation, constitute the relation between three-dimensional system of coordinate model, presentation space center line and line, line and the face, the help student understands relevant knowledge, and makes a profound impression.
The purpose of this utility model is achieved in that two T shape chi A, B, and there are a through hole in the horizontal edge of A chi and vertical edge intersection, and its through hole footpath can insert in the hole the horizontal edge of B chi or vertical edge respectively greater than the horizontal edge width of B chi and the width of vertical edge.When the vertical edge of B chi or horizontal edge insert in the hole, can demonstrate the size variation at angle; When the horizontal edge of B chi inserts in the hole, and the vertical edge of two chis is a straight line and when not overlapping, then is combined into the model of rectangular coordinate system in space.But two chis separate the then relation between presentation space center line, the face.
The utility model simple structure, two chis separately are easy to carry, and two chis are through different combinations, more metamorphosis is arranged, and except that the variation of demonstration angle, rectangular coordinate system in space, combination person is by oneself the operation and the imagination, different connotations can be arranged, in order to Enlightenment of Intelligence, help thinking.
Fig. 1 is the synoptic diagram of T shape chi A.
Fig. 2 is the synoptic diagram of T shape chi B.
Fig. 3 is that B chi horizontal edge inserts the synoptic diagram that the demonstration angle changes in the hole of A chi.
Fig. 4 is the synoptic diagram that B chi horizontal edge inserts demonstration three-dimensional system of coordinate model in the A chi hole.
Further specify structure of the present utility model and effect below in conjunction with accompanying drawing.
The horizontal edge 1 of A chi has through hole 3 with the intersection of vertical edge 2, and the horizontal edge 4 of B chi and the width of vertical edge 5 are all less than the diameter of through hole 3.The horizontal edge of two chis and vertical edge all can show scale.Show as Fig. 3, the horizontal edge 4 of B chi inserts in the through hole 3 of A, horizontal edge 1 is as X-axis, vertical edge 2 and reverse extending line thereof are as Y-axis, vertical edge 5 is regarded a ray as, then vertical edge 5 constitutes an angle with the right-hand part of horizontal edge 1, rotate horizontal edge 4, vertical edge 5 moves up and down along the direction shown in the arrow, then can demonstrate the variation at angle, when vertical edge 5 the X-axis shown in the horizontal edge 1 and above when moving, can demonstrate the variation of angle in 0 ° of-180 ° of scope, when vertical edge 5 the X-axis shown in the horizontal edge 1 and below when moving, can demonstrate the variation of angle in 180 ° of-360 ° of scopes.
As shown in Figure 4, B chi horizontal edge 4 penetrates in the through hole 3, then constitutes the model of three-dimensional system of coordinate, and horizontal edge 4 is an X-axis, and horizontal edge 1 is a Y-axis, and vertical edge 2,5 is the Z axle, and initial point is the center of through hole 3.Three combinations in twos then constitute three mutually perpendicular plane coordinate systems, and the represented plane of these three plane coordinate systems is orthogonal, and whole space is divided into eight parts, correspond respectively to first in the space geometry and hang limit, second and hang limit and hang limit until the 8th.Simultaneously can also this eight part is corresponding with the Eight Diagrams in The book of Changes respectively, for the communication of Chinese and Western culture elite provides a carrier intuitively.
When two chis separate, can presentation space in how much two lines perpendicular to same straight line, two lines perpendicular to different situations such as same plane, two straight line antarafacials are vertical, can help the student to understand relevant knowledge in the space geometry so very intuitively.
On the horizontal edge 1,4 of A, B two chis and the vertical edge 2,5 several apertures 6 are arranged all, in the operation of the various combinations of demonstration, available thin wire penetrates several apertures, constitutes different polyhedral profiles, and perhaps the form with certain combination is fixed up.
Claims (3)
1, a kind of teaching aid is made of two T shape chi A, B, it is characterized in that: the horizontal edge (1) on the T shape chi A has a through hole (3) with vertical edge (2) intersection, and the diameter of through hole (3) is greater than horizontal edge (4) width of T shape chi B and the width of vertical edge (5).
2, a kind of teaching aid as claimed in claim 1 is characterized in that: all indicate scale on the horizontal edge (1) of T shape chi A, B, (4) and vertical edge (2), (5).
3, a kind of teaching aid as claimed in claim 1 is characterized in that: all there are several apertures (6) horizontal edge (1) of T shape chi A, B, (4) and vertical edge (2), (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95209350 CN2238462Y (en) | 1995-04-22 | 1995-04-22 | T shape combined teaching model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95209350 CN2238462Y (en) | 1995-04-22 | 1995-04-22 | T shape combined teaching model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2238462Y true CN2238462Y (en) | 1996-10-23 |
Family
ID=33860382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95209350 Expired - Fee Related CN2238462Y (en) | 1995-04-22 | 1995-04-22 | T shape combined teaching model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2238462Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106846413A (en) * | 2017-01-24 | 2017-06-13 | 太原理工大学 | The device and method that three-dimensional tree-shaped rectangular coordinate system is built and image space is demarcated |
-
1995
- 1995-04-22 CN CN 95209350 patent/CN2238462Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106846413A (en) * | 2017-01-24 | 2017-06-13 | 太原理工大学 | The device and method that three-dimensional tree-shaped rectangular coordinate system is built and image space is demarcated |
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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 |