CN201126652Y - Teaching appliances special for demonstrating conoid formation - Google Patents
Teaching appliances special for demonstrating conoid formation Download PDFInfo
- Publication number
- CN201126652Y CN201126652Y CNU2007200166197U CN200720016619U CN201126652Y CN 201126652 Y CN201126652 Y CN 201126652Y CN U2007200166197 U CNU2007200166197 U CN U2007200166197U CN 200720016619 U CN200720016619 U CN 200720016619U CN 201126652 Y CN201126652 Y CN 201126652Y
- Authority
- CN
- China
- Prior art keywords
- base
- circular disc
- teaching aid
- base disk
- cup dolly
- 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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- Electrically Operated Instructional Devices (AREA)
Abstract
A teaching aid special for demonstration of cone formation is disclosed, characterized in that the teaching aid has a hollow circular base whose central portion is provided with a rotatable base circular disc, a vertical post is provided at centre of the base circular disc and sleeved with 8 right-angled triangles in sequence, edge of the base circular disc is provided with a clip groove channel in which a clip frame is provided; peak of an acute angle at lower portion of the first right-angled triangle sleeved on the vertical post is clipped in the clip frame, bevel side of the first right-angled triangle is connected with the clip frame; the circular base is provided inside with a minitype electric engine and a battery group for driving the base circular disc to rotate, and a power source switch is also provided on the circular base. With simple structure and strong operability, the utility model can demonstrate cone formation and basic concepts of associated knowledge, which not only facilitates teacher to complete teaching mission fast and conveniently, but improves practical ability and study interest of the students, consequentially, the utility model offers large help to the students in cultivating the abilities about problem analysis and solving.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly relates to a kind of teaching aid that the demonstration cone forms that is exclusively used in, and is to having replenishing of middle-school mathematics teaching apparatus kind now, belonging to the school supply and stationery category.
Background technology
At present, middle and primary schools' teaching aid kind is a lot, but function singlenesses all just designs at the content that needs separately to show.At the cone formation of stage in junior middle school, side stretch-out view and relevant knowledge is very important content in the mathematical education, yet be again one of the important of mathematics class and the course of beyonding one's depth, student and teacher press for teaching aid targetedly, existing teaching is not because of there being contrast in kind, the student can only remember by force with teacher's oral account, cone forms and the exploration and the proof procedure of relevant knowledge to be difficult to make the student to undergo, thereby bring certain difficulty to teaching, even have influence on student performance and learning interest.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improves by research, provides a kind of teaching aid that the demonstration cone forms that is exclusively used in.This novel teaching aid is simple in structure, workable, can demonstrate that cone forms and the key concept of relevant knowledge, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
The technical scheme that the utility model provides is: this teaching aid that is exclusively used in the formation of demonstration cone, be characterized in the cup dolly of a hollow, the place, centre on cup dolly surface is provided with rotating base disk, the circle centre position of base disk is provided with a column, be with 8 right-angle triangles on this column successively, the edge of base disk is provided with the draw-in groove road, be provided with the card frame in the draw-in groove road, the summit that is enclosed within the bottom acute angle of first right-angle triangle on the column is stuck in the card frame, the hypotenuse of first right-angle triangle is connected with the card frame, cup dolly inside is provided with and drives micromachine that the base disk rotates and as the electric battery of power supply, also be provided with power switch on the cup dolly.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, workable, can demonstrate the key concept of cone formation and relevant knowledge, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
Description of drawings
Fig. 1 provides the structural representation of embodiment (before the rotation) for the utility model;
Fig. 2 is the structural representation of the cup dolly among Fig. 1;
Fig. 3 provides the postrotational design sketch of embodiment for the utility model.
Embodiment
As Fig. 1～shown in Figure 3, this teaching aid that is exclusively used in the formation of demonstration cone, the cup dolly 5 that a hollow is arranged, the place, centre on cup dolly 5 surfaces is provided with rotating base disk 2, the circle centre position of base disk 2 is provided with a column 1, be with 8 right-angle triangles 6 on this column 1 successively, the edge of base disk 2 is provided with draw-in groove road 3, be provided with the card frame in the draw-in groove road 3, the summit that is enclosed within the bottom acute angle of first right-angle triangle 6 on the column 1 is stuck in the card frame, the hypotenuse of first right-angle triangle 6 is connected with the card frame, cup dolly 5 inside are provided with and drive micromachine 7 that base disk 2 rotates and as the electric battery of power supply, also be provided with power switch 4 on the cup dolly 5.
During demonstration, earlier the hypotenuse of a diameter of a fan-shaped blue cloth and first right-angle triangle 6 is coincided, the hypotenuse of another radius and last right-angle triangle 6 coincides, and the summit of the top acute angle of the fan-shaped center of circle and right-angle triangle 6 coincides.Open the power switch 4 on the cup dolly 5, micromachine 7 drives base disk 2 and rotates, card frame in the draw-in groove road 3 on the base disk 2 also rotates thereupon, the card frame drives first right-angle triangle 6 to begin around column 1 rotation, rotate to join with the 8th right-angle triangle 6 till, at this moment, the student just can see intuitively: right-angle triangle is around a right-angle side rotation of right-angle triangle, will form a cone, the higher position of cone is the length of the right-angle side of setting, bus length is exactly that the hypotenuse of right-angle triangle is long, and the bottom surface radius of a circle is exactly the length of another right-angle side.At last the cloth on the right-angle triangle is lifted down expansion, the student can also see intuitively: the side stretch-out view of circular cone is fan-shaped, and fan-shaped arc length is the girth of bottom surface circle.
Claims (1)
1. one kind is exclusively used in the teaching aid that the demonstration cone forms, it is characterized in that having the cup dolly of a hollow, the place, centre on cup dolly surface is provided with rotating base disk, the circle centre position of base disk is provided with a column, be with 8 right-angle triangles on this column successively, the edge of base disk is provided with the draw-in groove road, be provided with the card frame in the draw-in groove road, the summit that is enclosed within the bottom acute angle of first right-angle triangle on the column is stuck in the card frame, the hypotenuse of first right-angle triangle is connected with the card frame, cup dolly inside is provided with and drives micromachine that the base disk rotates and as the electric battery of power supply, also be provided with power switch on the cup dolly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200166197U CN201126652Y (en) | 2007-12-10 | 2007-12-10 | Teaching appliances special for demonstrating conoid formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200166197U CN201126652Y (en) | 2007-12-10 | 2007-12-10 | Teaching appliances special for demonstrating conoid formation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126652Y true CN201126652Y (en) | 2008-10-01 |
Family
ID=40000119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200166197U Expired - Fee Related CN201126652Y (en) | 2007-12-10 | 2007-12-10 | Teaching appliances special for demonstrating conoid formation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126652Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956089A (en) * | 2014-05-10 | 2014-07-30 | 周维保 | Rotating body teaching demonstration device |
| CN104485038A (en) * | 2014-12-12 | 2015-04-01 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
| CN106023731A (en) * | 2016-07-21 | 2016-10-12 | 安徽省宿州市第二中学 | Teaching aid for rotation demonstration of rotating body |
-
2007
- 2007-12-10 CN CNU2007200166197U patent/CN201126652Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956089A (en) * | 2014-05-10 | 2014-07-30 | 周维保 | Rotating body teaching demonstration device |
| CN104485038A (en) * | 2014-12-12 | 2015-04-01 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
| CN104485038B (en) * | 2014-12-12 | 2017-04-19 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
| CN106023731A (en) * | 2016-07-21 | 2016-10-12 | 安徽省宿州市第二中学 | Teaching aid for rotation demonstration of rotating body |
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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 |