CN202563755U - Probability distribution demonstration device - Google Patents
Probability distribution demonstration device Download PDFInfo
- Publication number
- CN202563755U CN202563755U CN2012202400575U CN201220240057U CN202563755U CN 202563755 U CN202563755 U CN 202563755U CN 2012202400575 U CN2012202400575 U CN 2012202400575U CN 201220240057 U CN201220240057 U CN 201220240057U CN 202563755 U CN202563755 U CN 202563755U
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- China
- Prior art keywords
- probability distribution
- storage basket
- demonstration device
- fixed
- pedestal
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Abstract
The utility model discloses a probability distribution demonstration device, which comprises a pedestal, wherein a plurality of glass tubes are fixed on the pedestal at equidistance in a straight line, height numerical value sections are marked below the glass tubes, a scale plate is arranged behind the glass tubes, a storage basket is fixed on the pedestal through a supporting pillar, colored balls are placed in the storage basket, and the outer side of the storage basket is provided with a calculator. The probability distribution demonstration device has the advantages of simple structure, convenient operation, easy demonstration, and strong interestingness with full participation of students; moreover, the probability distribution theory can be quickly understood by the students, and the convenience for teaching is brought.
Description
Technical field
The utility model relates to a kind of teaching aid, is specially a kind of probability distribution demonstration device.
Background technology
In the teaching of theory of probability, the abstractness that tends to owing to knowledge itself makes the student to form notion more intuitively to probability, and then in teaching process, is difficult to the characteristic that the student made much of and verify probability distribution.Demonstrate probability distribution and forming process by instruments used for education; Can play better teaching; But present probability apparatus for demonstrating or too simply do not have significant demonstration effect, or too complicacy can not be the teaching widespread usage, and then teaching brings some inconvenience to theory of probability.
The utility model content
For overcoming above-mentioned technical matters, it is a kind of simple in structure that the utility model provides, and demonstration is convenient, is adapted at the probability distribution demonstration device of widespread usage in the theory of probability teaching.
For realizing above-mentioned technical purpose, the utility model is to adopt following technical scheme to realize: a kind of probability distribution demonstration device comprises a base; It is characterized in that: be fixed with the linear distributing glass tube of some equidistance on the base; Glass tube below mark has height numerical value section, and the glass tube rear is provided with scaleplate, is fixed with storage basket through a pillar in addition on the base; Be placed with colored bead in the storage basket, the storage basket outside is provided with counter.
The utlity model has following beneficial effect: when carrying out the probability demonstration; Let student's fellowship, let the student that bead is put in the glass tube corresponding with its height numerical value successively, and height numerical value is input in the counter adds up; When the number of student of participating in many more; The height of the bead stack in a plurality of glass tubes approaching with just too distribution, and through counter can write down the participant height, mean, add up and etc. numerical value so that carry out analysis verification.It is simple in structure, and is easy to operate, and demonstration easily, and is interesting strong by student's fellowship, can let student's fast understanding probability distribution theory, has brought convenience to teaching.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Among the figure, 1, glass tube, 2, scaleplate, 3, bead, 4, storage basket, 5, counter, 6, pillar, 7, base.
Embodiment
Shown in accompanying drawing; A kind of probability distribution demonstration device; Comprise a base 7, it is characterized in that: be fixed with the linear distributing glass tube 1 of some equidistance on the base 7, glass tube 1 below mark has height numerical value section such as 145-148,148-151,151-154 Glass tube 1 rear is provided with scaleplate 2, is fixed with storage basket 4 through a pillar 6 in addition on the base 7, is placed with colored bead 3 in the storage basket 4, and storage basket 4 outsides are provided with counter 5.When carrying out the probability demonstration; Let student's fellowship, let the student that bead 3 is put in the glass tube corresponding with its height numerical value 1 successively, and height numerical value is input in the counter 5 adds up; When the number of student of participating in many more; The height of beads 3 stacks in a plurality of glass tubes 1 approaching with just too distribution, and through counter 5 can write down the participant height, mean, add up and etc. numerical value so that carry out analysis verification.
Claims (1)
1. probability distribution demonstration device; Comprise a base, it is characterized in that: be fixed with the linear distributing glass tube of some equidistance on the base, glass tube below mark has height numerical value section; The glass tube rear is provided with scaleplate; Be fixed with storage basket through a pillar in addition on the base, be placed with colored bead in the storage basket, the storage basket outside is provided with counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202400575U CN202563755U (en) | 2012-05-26 | 2012-05-26 | Probability distribution demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202400575U CN202563755U (en) | 2012-05-26 | 2012-05-26 | Probability distribution demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563755U true CN202563755U (en) | 2012-11-28 |
Family
ID=47213384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202400575U Expired - Fee Related CN202563755U (en) | 2012-05-26 | 2012-05-26 | Probability distribution demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226906A (en) * | 2013-04-02 | 2013-07-31 | 诸暨市联系数学研究所 | Set pair analysis randomness source demonstration device |
-
2012
- 2012-05-26 CN CN2012202400575U patent/CN202563755U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226906A (en) * | 2013-04-02 | 2013-07-31 | 诸暨市联系数学研究所 | Set pair analysis randomness source demonstration device |
| CN103226906B (en) * | 2013-04-02 | 2015-01-07 | 诸暨市联系数学研究所 | Set pair analysis randomness source demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130526 |