CN204348174U - A kind of demonstration device for probability - Google Patents
A kind of demonstration device for probability Download PDFInfo
- Publication number
- CN204348174U CN204348174U CN201520026074.2U CN201520026074U CN204348174U CN 204348174 U CN204348174 U CN 204348174U CN 201520026074 U CN201520026074 U CN 201520026074U CN 204348174 U CN204348174 U CN 204348174U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- chassis
- probability
- storage bin
- dividing plate
- 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
Links
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a kind of demonstration device for probability, belong to principle of probability apparatus for demonstrating field, mainly solve the problem that probability parts lectures in current mathematics lacks lively concept display intuitively, storage bin is cylinder type hollow structure, upper surface is designed for opening, lower end is provided with taper enclosuring structure, storage bin taper sealing bottom is connected with chassis face center by cylindrical tube, described chassis is cylinder type hollow structure, the bottom center position of chassis cavity is provided with rotating shaft, described rotating shaft bottom and chassis are integral type structure, it is relative that bottom is sealed in rotating shaft top and storage bin taper, rotating shaft top is provided with conical head, dividing plate is four block length square plate compositions, described rectangular slab is radial distribution, minor face side is aggregated in home position, described home position is provided with the cylindrical hole coordinated with rotating shaft.The utility model adopts the ultimate principle of the probability of experimental method demonstration intuitively, and student can be made fundamentally to understand the principle of probability, improves efficiency of giving lessons.
Description
Technical field
The utility model relates to a kind of demonstration device for probability, belongs to principle of probability apparatus for demonstrating field, can help mathematical education.
Background technology
Probability, also known as probability, chance rate, probability (probability) or possibility, is the key concept of theory of probability.Probability is the tolerance of possibility occurred random occurrence, generally with the possibility size that a real number representation event between 0 to 1 occurs.More close to 1, this event more may occur; More close to 0, then this event more can not occur.It has often been said that someone has percent how many assurance by current examination, the possibility that something occurs is how many, and this is all the example of probability.Probability occupies very consequence in current mathematical education, as Fundamentals of Mathematics content, lay the foundation, in traditional probability content teaching for understanding relevant high content in mathematics, usually adopting the mode described in words allows student understand its concept, lacks lively concept display intuitively.
Utility model content
The utility model adopts for probability parts lectures in current mathematics the mode described in words usually allows student understand its concept, lacks the problem of lively concept display intuitively, devises a kind of demonstration device for probability.
The technical scheme in the invention for solving the technical problem is:
This demonstration device for probability, its structure comprises: storage bin, chassis, dividing plate, rotating shaft, switch, storage bin is cylinder type hollow structure, upper surface is designed for opening, lower end is provided with taper enclosuring structure, storage bin taper sealing bottom is connected with chassis face center by cylindrical tube, described chassis is cylinder type hollow structure, the bottom center position of chassis cavity is provided with rotating shaft, described rotating shaft bottom and chassis are integral type structure, it is relative that bottom is sealed in rotating shaft top and storage bin taper, rotating shaft top is provided with conical head, dividing plate is four block length square plate compositions, described rectangular slab is radial distribution, minor face side is aggregated in home position, described home position is provided with the cylindrical hole coordinated with rotating shaft.
The long limit of four rectangular slabs of described composition dividing plate equals chassis cavity radius, and in four rectangular slabs of composition dividing plate, adjacent separator angle is 90 degree.
Cylindrical hole aperture, described dividing plate center is equal with the external diameter of rotating shaft.
The cylindrical tube that described storage bin taper sealing bottom is connected with chassis face center is provided with switch, and described switch type selecting is ball valve.
Compared with prior art, the beneficial effects of the utility model are:
1. the utility model adopts the ultimate principle of the probability of experimental method demonstration intuitively, and student can be made fundamentally to understand the principle of probability, improves efficiency of giving lessons.
2. the utility model structure is simple, and easy to make, material is cheap, and cost of manufacture is low, and application is wide, can demonstrate probability formation basic theory under different occasion.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction figure.
Fig. 2 is the utility model diaphragm structure figure.
Fig. 3 is the utility model dividing plate vertical view.
In figure: 1 storage bin, 2 chassis, 3 dividing plates, 4 rotating shafts, 5 switches, 6 beans.
Embodiment
As shown in Figure 1, 2, 3: a kind of demonstration device for probability, its structure comprises: storage bin 1, chassis 2, dividing plate 3, rotating shaft 4, switch 5, storage bin 1 is cylinder type hollow structure, upper surface is designed for opening, lower end is provided with taper enclosuring structure, storage bin 1 taper sealing bottom is connected with end face center, chassis 2 by cylindrical tube, described chassis 2 is cylinder type hollow structure, the bottom center position of chassis 2 inner chamber is provided with rotating shaft 4, described rotating shaft 4 bottom and chassis 2 are integral type structure, it is relative that bottom is sealed in rotating shaft 4 top and storage bin 1 taper, rotating shaft 4 top is provided with conical head, dividing plate 3 is four block length square plate compositions, described rectangular slab is radial distribution, minor face side is aggregated in home position, described home position is provided with the cylindrical hole coordinated with rotating shaft 4, the long limit of four rectangular slabs of described composition dividing plate 3 equals chassis 2 inner chamber radius, and in four rectangular slabs of composition dividing plate 3, adjacent separator 3 angle is 90 degree, cylindrical hole aperture, described dividing plate 3 center is equal with the external diameter of rotating shaft 4, the cylindrical tube that described storage bin 1 taper sealing bottom is connected with end face center, chassis 2 is provided with switch 5, and described switch 5 type selecting is ball valve.
A kind of demonstration device for probability described by the present embodiment, during use, can be positioned in storage bin 1 by the beans 6 of switch 5 smoothly, dividing plate 3 is fixed in the inner chamber of chassis 2 by rotating shaft 4, then opening switch 5, beans 6 flows through switch 5 and collides the pyramidal structure realization dispersion at rotating shaft 4 top, now beans can evenly be sprinkling upon dividing plate 3 formed in point four subregions, closing switch 5 after certain hour, beans 6 number counting each region of dividing plate 3 contrasts, because chassis 2 internal cavity is achieved the quartern by dividing plate 3, therefore the geometry distribution theory of probability can be drawn by beans number in regional, the utility model adopts the ultimate principle of the probability of experimental method demonstration intuitively, student can be made fundamentally to understand the principle of probability, improve efficiency of giving lessons, the utility model structure is simple, easy to make, material is cheap, cost of manufacture is low, application is wide, probability formation basic theory can be demonstrated under different occasion.
The above, be only embodiment of the present utility model, and those of ordinary skill in the art are in the scope that the utility model discloses, and the change that can expect easily, within the protection domain that all should be encompassed in utility model.
Claims (4)
1. a demonstration device for probability, structure comprises: storage bin (1), chassis (2), dividing plate (3), rotating shaft (4), switch (5), it is characterized in that: storage bin (1) is cylinder type hollow structure, upper surface is designed for opening, lower end is provided with taper enclosuring structure, storage bin (1) taper sealing bottom is connected with chassis (2) end face center by cylindrical tube, described chassis (2) is cylinder type hollow structure, the bottom center position of chassis (2) inner chamber is provided with rotating shaft (4), described rotating shaft (4) bottom and chassis (2) are integral type structure, it is relative that bottom is sealed in rotating shaft (4) top and storage bin (1) taper, rotating shaft (4) top is provided with conical head, dividing plate (3) is four block length square plate compositions, described rectangular slab is radial distribution, minor face side is aggregated in home position, described home position is provided with the cylindrical hole coordinated with rotating shaft (4).
2. a kind of demonstration device for probability according to claim 1, it is characterized in that: the long limit of four rectangular slabs of described composition dividing plate (3) equals chassis (2) inner chamber radius, in four rectangular slabs of composition dividing plate (3), adjacent separator (3) angle is 90 degree.
3. a kind of demonstration device for probability according to claim 1, is characterized in that: cylindrical hole aperture, described dividing plate (3) center is equal with the external diameter of rotating shaft (4).
4. a kind of demonstration device for probability according to claim 1, is characterized in that: the cylindrical tube that described storage bin (1) taper sealing bottom is connected with chassis (2) end face center is provided with switch (5), and described switch (5) type selecting is ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026074.2U CN204348174U (en) | 2015-01-15 | 2015-01-15 | A kind of demonstration device for probability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026074.2U CN204348174U (en) | 2015-01-15 | 2015-01-15 | A kind of demonstration device for probability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348174U true CN204348174U (en) | 2015-05-20 |
Family
ID=53231429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520026074.2U Expired - Fee Related CN204348174U (en) | 2015-01-15 | 2015-01-15 | A kind of demonstration device for probability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204348174U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
| CN105551347A (en) * | 2016-01-21 | 2016-05-04 | 殷俊峰 | Probability learning device for intelligent mathematics teaching |
| CN105632294A (en) * | 2016-01-13 | 2016-06-01 | 河南机电高等专科学校 | Mathematics probability teaching demonstration device |
| CN106781885A (en) * | 2017-04-11 | 2017-05-31 | 刘丰源 | A kind of mathematics random chance statistical model |
| CN107025827A (en) * | 2017-06-08 | 2017-08-08 | 商丘工学院 | A kind of applied mathematics probability event teaching method and device |
| CN108182851A (en) * | 2018-02-09 | 2018-06-19 | 钦州学院 | A kind of normal distribution probability demonstration device |
-
2015
- 2015-01-15 CN CN201520026074.2U patent/CN204348174U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632294A (en) * | 2016-01-13 | 2016-06-01 | 河南机电高等专科学校 | Mathematics probability teaching demonstration device |
| CN105632294B (en) * | 2016-01-13 | 2018-09-04 | 河南工学院 | A kind of mathematical probabilities teaching demonstration device |
| CN105551347A (en) * | 2016-01-21 | 2016-05-04 | 殷俊峰 | Probability learning device for intelligent mathematics teaching |
| CN105551347B (en) * | 2016-01-21 | 2019-02-05 | 临沂大学 | A kind of intelligent mathematical teaching probability learning device |
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
| CN106781885A (en) * | 2017-04-11 | 2017-05-31 | 刘丰源 | A kind of mathematics random chance statistical model |
| CN107025827A (en) * | 2017-06-08 | 2017-08-08 | 商丘工学院 | A kind of applied mathematics probability event teaching method and device |
| CN107025827B (en) * | 2017-06-08 | 2019-08-16 | 商丘工学院 | A kind of applied mathematics probability event teaching method and device |
| CN108182851A (en) * | 2018-02-09 | 2018-06-19 | 钦州学院 | A kind of normal distribution probability demonstration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204348174U (en) | A kind of demonstration device for probability | |
| CN205845362U (en) | A kind of novel mathematical probabilities learning experimental device | |
| CN204732040U (en) | Magnetic field interaction force demonstration teaching aid | |
| CN205177230U (en) | Colleges and universities' mathematics probability teaching mode | |
| CN204884320U (en) | Ware is demonstrated on inclined plane for physical teaching | |
| CN206272109U (en) | A kind of high-tension switch cabinet with function of seismic resistance | |
| CN204667709U (en) | Angle and length of side visual quadrilateral demonstrator | |
| CN203812447U (en) | Definite integral teaching aid | |
| CN203540700U (en) | Funnel with iron ion removal devices | |
| CN203272988U (en) | Novel valve rod positioning ring | |
| CN202230645U (en) | Combination teaching aid for space pattern demonstrations of primary school mathematics | |
| CN203165286U (en) | English affix movable type teaching aid | |
| CN206426721U (en) | Geometry line tool is used in one kind teaching | |
| CN203055251U (en) | Cuboid-shaped teaching aid for elementary school | |
| CN203588525U (en) | Teaching aid for demonstrating torsional deformation of solid rectangular-cross section bar | |
| CN202434092U (en) | Magnetic quadrilateral plate | |
| CN201965808U (en) | Multifunctional sphere model | |
| CN205122036U (en) | Device of demonstration liquid pressure size | |
| CN203961757U (en) | A kind of wind-proof device for door-rolling machine | |
| CN204667710U (en) | A kind of parabola demonstration device used of imparting knowledge to students | |
| CN203839178U (en) | Transformer high-pressure side sleeve pipe device | |
| CN204516160U (en) | Magnetic cm cubes body | |
| CN203888143U (en) | Valve pin spacer | |
| CN203588524U (en) | Solid circular shaft and hollow circular shaft anti-torsional deflection capability comparison and demonstration teaching aid | |
| CN202331978U (en) | Movable teaching model of trisection cube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20160115 |
|
| EXPY | Termination of patent right or utility model |