CN203689765U - University mathematical probability event teaching demonstration device - Google Patents
University mathematical probability event teaching demonstration device Download PDFInfo
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- CN203689765U CN203689765U CN201420027010.XU CN201420027010U CN203689765U CN 203689765 U CN203689765 U CN 203689765U CN 201420027010 U CN201420027010 U CN 201420027010U CN 203689765 U CN203689765 U CN 203689765U
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- pipeline
- teaching demonstration
- probability event
- under casing
- demonstration device
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 239000011324 bead Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a university mathematical probability event teaching demonstration device. When teachers perform mathematical probability occurrence demonstration, they usually throw a coin, and record the number of the times of the occurrence of the front side and the back side of the coin, and then put the number of the times of the occurrence of the front side and the back side of the coin into simple statistical, while, the above demonstration mode does not assist in understanding of high-abstraction and high-difficulty probability knowledge. The university mathematical probability event teaching demonstration device comprises a launch barrel (1); the launch barrel is connected with a data transmission device (2); the top of the launch barrel is communicated with a cone bottom box (4) through a pipeline B (3); a ball leakage plate (5) is arranged in the cone bottom box; the ball leakage plate is provided with a pipeline A (7), a group of leakage holes (6) and a group of wireless optical sensors (8); the lower opening of the pipeline A is hinged with a group of iron sheets (9); the pipeline B is communicated with an elastic dynamic device; the wireless optical sensors are connected with the data transmission device; and a plastic ball (18) is arranged in the cone bottom box. The university mathematical probability event teaching demonstration device of the utility model is a university mathematical probability occurrence device teaching aid.
Description
technical field:
the utility model relates to a kind of College Maths probability event teaching demonstration device.
background technology:
teacher carries out mathematics probability when demonstration occurs, be all often to use one piece of coin to carry out throwing, simply adds up after having recorded the number of times that pros and cons occurs.High and the high probabilistic knowledge of the difficulty help on not understanding to the level of abstraction.Again or the simple dependence theoretical explanation of teacher explain, student is difficult to grasp relevant knowledge.Need probability generation apparatus for demonstrating to carry out aided education.
summary of the invention:
the purpose of this utility model is to provide a kind of College Maths probability event teaching demonstration device.
above-mentioned object realizes by following technical scheme:
a kind of College Maths probability event teaching demonstration device, its composition comprises: launching tube, described launching tube connection data transmitting device, described launching tube top is by B pipeline communication cone under casing; The plate of losing is installed in described cone under casing, on the described plate of losing, there is one group of small opening, A pipeline and one group of wireless light sensor are installed in the described plate bottom of losing, the end opening of described A pipeline is by the hinged one group of iron plate of rotating shaft, the lower end of described iron plate is stretched in described B pipeline, described B pipeline communication elastic dynamic device; Data transmission device described in described wireless optical sensing wireless connections; Wherein, in described cone under casing, place a plastic beads.
described College Maths probability event teaching demonstration device, described elastic dynamic device also has elastic cavity, the bottom of described elastic cavity also fixedly mounts spring, described spring top connection teeth bar, described tooth bar engagement half-turn gear, described half-turn gear middle part cross-under bearing, described bearing two ends are fixed on described launching tube, and one end of described bearing connects crank.
described College Maths probability event teaching demonstration device, also has one group of pillar between described launching tube and cone under casing.
described College Maths probability event teaching demonstration device, described A pipeline suitable for reading by the hinged round iron plate of rotating shaft, the diameter of described round iron plate is greater than the diameter of described A pipeline.
described College Maths probability event teaching demonstration device, described wireless light sensor is arranged under casing, and described under casing is arranged on by described small opening, and described under casing is identical with the quantity of described small opening.
described College Maths probability event teaching demonstration device, the diameter of described A pipeline is greater than the diameter of described bead, and the diameter of described bead is greater than the diameter of described B pipeline.
the beneficial effects of the utility model:
1. the utility model is provided with a kind of probability generation and pen recorder, the utility model mainly comprises the cone under casing on top and launching tube two parts of bottom, in cone under casing, it is the main occurrence positions that probability occurs, in launching tube, be to manufacture the power that probability occurs, the spring arranging in launching tube is connected with tooth bar, and moving up and down of tooth bar is that the rotation of the gear of the half-turn by crank has been installed provides power.Because the tooth of half-turn gear is identical with the tooth number of tooth bar, when clockwise shake crank, make the tooth of half-turn gear and the tooth of tooth bar complete the process engaging from the beginning to the end, after continuing to shake crank clockwise, half-turn wheel and rack departs from from contact condition again, this hour rack has been moved to bottom makes spring be accumulated elastic potential energy, and the elastic potential energy of spring will be converted to tooth bar and top rod kinetic energy upwards.Top rod is bead jack-up, and along A pipeline upwards and back down round iron plate, bead falls from any one small opening and falls bead, and this is the generation of a probability event, and by optical sensor record the number of times through each small opening.Be launched into and drop to that to fall into be all random in any one small opening from bead, the disturbing factor that the setting of whole device does not exist event to occur, can ensure the fairness that probability event occurs, and makes mathematics probability event generation teaching process become clear.Make up the present situation of existing demonstration device for probability blank, there is auxiliary teacher and give an oral account the effect of explaining abstract probability correlation course, also can help student to understand probability correlation knowledge.
2. the diameter of the A pipeline of the utility model setting is greater than the diameter of bead, and the diameter of bead is greater than the diameter of B pipeline, so just can ensure that bead can not call in launching tube under casing from cone.
3. the removable cover at the cone under casing top that the utility model relates to can freely be opened, and is conducive to whole device and overhauls and clean.The operation of whole device is completely manually carried out, and does not need battery or Power supply, and the making material of launching tube and cone under casing is plastics or steel plate, and cost of manufacture is low, and whole presentation process is environment friendly and pollution-free.
brief description of the drawings:
accompanying drawing 1 is the external structure schematic diagram of the utility model with part section.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to structural representation.
embodiment:
embodiment 1:
a kind of College Maths probability event teaching demonstration device, its composition comprises: launching tube 1, described launching tube connection data transmitting device 2, described launching tube top is communicated with cone under casing 4 by B pipeline 3; The plate 5 of losing is installed in described cone under casing, on the described plate of losing, there is one group of small opening 6, A pipeline 7 and one group of wireless light sensor 8 are installed in the described plate bottom of losing, the end opening of described A pipeline is by the hinged one group of iron plate 9 of rotating shaft, the lower end of described iron plate is stretched in described B pipeline, described B pipeline communication elastic dynamic device; Data transmission device described in described wireless optical sensing wireless connections; Wherein, in described cone under casing, place a plastic beads 18.
removable cover is installed at described cone under casing top.
described data transmission device also has one group of USB interface.
embodiment 2:
according to the College Maths probability event teaching demonstration device described in embodiment 1, described elastic dynamic device also has elastic cavity 10, the bottom of described elastic cavity also fixedly mounts spring 11, described spring top connection teeth bar 12, described tooth bar engagement half-turn gear 13, described half-turn gear middle part cross-under bearing, described bearing two ends are fixed on described launching tube, and one end of described bearing connects crank 14; Wherein, described installation top, tooth bar top rod 15.
embodiment 3:
according to the College Maths probability event teaching demonstration device described in embodiment 1 or 2, between described launching tube and cone under casing, also there is one group of pillar 16.
embodiment 4:
according to the College Maths probability event teaching demonstration device described in embodiment 1 or 2, described A pipeline suitable for reading by the hinged round iron plate 17 of rotating shaft, the diameter of described round iron plate is greater than the diameter of described A pipeline.
embodiment 5:
according to the College Maths probability event teaching demonstration device described in embodiment 1 or 2, described wireless light sensor is arranged under casing, and described under casing is arranged on by described small opening, and described under casing is identical with the quantity of described small opening.
embodiment 6:
according to the College Maths probability event teaching demonstration device described in embodiment 1 or 2, the diameter of described A pipeline is greater than the diameter of described bead, and the diameter of described bead is greater than the diameter of described B pipeline.
Claims (6)
1. a College Maths probability event teaching demonstration device, its composition comprises: launching tube, is characterized in that: described launching tube connection data transmitting device, described launching tube top is by B pipeline communication cone under casing; The plate of losing is installed in described cone under casing, on the described plate of losing, there is one group of small opening, A pipeline and one group of wireless light sensor are installed in the described plate bottom of losing, the end opening of described A pipeline is by the hinged one group of iron plate of rotating shaft, the lower end of described iron plate is stretched in described B pipeline, described B pipeline communication elastic dynamic device; Data transmission device described in described wireless optical sensing wireless connections; Wherein, in described cone under casing, place a plastic beads.
2. College Maths probability event teaching demonstration device according to claim 1, it is characterized in that: described elastic dynamic device also has elastic cavity, the bottom of described elastic cavity also fixedly mounts spring, described spring top connection teeth bar, described tooth bar engagement half-turn gear, described half-turn gear middle part cross-under bearing, described bearing two ends are fixed on described launching tube, and one end of described bearing connects crank.
3. College Maths probability event teaching demonstration device according to claim 1 and 2, is characterized in that: between described launching tube and cone under casing, also have one group of pillar.
4. College Maths probability event teaching demonstration device according to claim 1 and 2, is characterized in that: described A pipeline suitable for reading by the hinged round iron plate of rotating shaft, the diameter of described round iron plate is greater than the diameter of described A pipeline.
5. College Maths probability event teaching demonstration device according to claim 1 and 2, is characterized in that: described wireless light sensor is arranged under casing, and described under casing is arranged on by described small opening, and described under casing is identical with the quantity of described small opening.
6. College Maths probability event teaching demonstration device according to claim 1 and 2, is characterized in that: the diameter of described A pipeline is greater than the diameter of described bead, and the diameter of described bead is greater than the diameter of described B pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027010.XU CN203689765U (en) | 2014-01-17 | 2014-01-17 | University mathematical probability event teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027010.XU CN203689765U (en) | 2014-01-17 | 2014-01-17 | University mathematical probability event teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203689765U true CN203689765U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420027010.XU Expired - Fee Related CN203689765U (en) | 2014-01-17 | 2014-01-17 | University mathematical probability event teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203689765U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation device |
| CN105551347A (en) * | 2016-01-21 | 2016-05-04 | 殷俊峰 | Probability learning device for intelligent mathematics teaching |
| CN106971652A (en) * | 2017-06-02 | 2017-07-21 | 李维波 | Maths demonstration device |
| CN108417123A (en) * | 2018-05-25 | 2018-08-17 | 潍坊科技学院 | A kind of mathematical education probability demonstration equipment |
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
| CN110070783A (en) * | 2019-04-30 | 2019-07-30 | 河南大学 | A kind of statistics normal distribution demonstration teaching aid |
-
2014
- 2014-01-17 CN CN201420027010.XU patent/CN203689765U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715655A (en) * | 2015-04-01 | 2015-06-17 | 白依川 | Advanced mathematics probability presentation 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 |
| CN106971652A (en) * | 2017-06-02 | 2017-07-21 | 李维波 | Maths demonstration device |
| CN108417123A (en) * | 2018-05-25 | 2018-08-17 | 潍坊科技学院 | A kind of mathematical education probability demonstration equipment |
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
| CN110070783A (en) * | 2019-04-30 | 2019-07-30 | 河南大学 | A kind of statistics normal distribution demonstration teaching aid |
| CN110070783B (en) * | 2019-04-30 | 2021-01-12 | 河南大学 | Statistics normal distribution demonstration teaching aid |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 |