CN107256665A - A kind of higher mathematics demonstration device for probability and demenstration method - Google Patents
A kind of higher mathematics demonstration device for probability and demenstration method Download PDFInfo
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- CN107256665A CN107256665A CN201710563566.9A CN201710563566A CN107256665A CN 107256665 A CN107256665 A CN 107256665A CN 201710563566 A CN201710563566 A CN 201710563566A CN 107256665 A CN107256665 A CN 107256665A
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- pull bar
- rotating disk
- riser
- flashboard
- movable block
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
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Abstract
The invention discloses a kind of higher mathematics demonstration device for probability, including riser, the riser is provided with fixing axle, rotating disk is rotatably connected in the fixing axle, the fixing axle runs through rotating disk, the edge of the rotating disk is provided with graduation mark, the end of the fixing axle is also fixedly connected with pointer, the left side of the riser is provided with pedestal, the top of the pedestal is provided with chute, the chute internal activity is connected with movable block, the left side of the movable block is provided with handle, motor is installed at the top of the movable block, the output end of the motor is connected with driving wheel, substrate is fixedly connected with the right side of the riser, the substrate vertical welding is in riser, running through on the substrate has pull bar, the pull bar is horizontally disposed with, the left end of the pull bar is connected with flashboard, pull bar between the flashboard and substrate is provided with spring, the right-hand member of the pull bar is provided with draw ring.Labor intensity is reduced, the substantial amounts of stand-by period is saved, operating efficiency is improved.
Description
Technical field
The present invention relates to instructional technology field, more particularly to a kind of higher mathematics demonstration device for probability and demenstration method.
Background technology
Mathematics (mathematics), is a subject for studying the concepts such as quantity, structure, change, space and information,
Belong to one kind of formal science in terms of certain angle.Mathematics plays irreplaceable in development of human history and social life
Effect, is also study and the essential basic tool of research modern science and technology.Production of the mathematics originating from mankind's early stage is lived
Dynamic, Chaldaic have accumulated certain mathematical knowledge from remote ages, and can apply practical problem from mathematics exercise book
Body sees that also simply observation, with obtained by experience, does not integrate conclusion and proof, but also to affirm fully them to their mathematical knowledge
The contribution probability made to mathematics institute, also known as probability, chance rate, probability (probability) or possibility, are the substantially general of probability theory
Read.Probability is the measurement for the possibility that chance event occurs, typically with one event of a real number representation between 0 to 1
The possibility size of generation.Closer to 1, the event more likely occurs；Closer to 0, then the event unlikely occurs.People are normal
Say that someone has percent how many assurance can be by specifically taking an examination, the possibility that something occurs is how many, and this is all probability
Example.
For higher mathematics demonstration device for probability, apparatus for demonstrating of the prior art is typically demonstrated using rotating disk, but
Manual rotation's rotating disk is needed in presentation process, labor intensity is big, and waits rotating disk to stop operating the times for needing consuming a lot,
Be not suitable for promoting the use of.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of higher mathematics probability proposed is drilled
Showing device and demenstration method.
To achieve these goals, present invention employs following technical scheme：A kind of higher mathematics demonstration device for probability, bag
Riser is included, the riser, which is provided with fixing axle, the fixing axle, is rotatably connected to rotating disk, and the fixing axle runs through rotating disk, institute
The edge for stating rotating disk is provided with graduation mark, and the end of the fixing axle is also fixedly connected with pointer, and the left side of the riser is provided with base
Seat, the top of the pedestal is provided with chute, and the chute internal activity is connected with movable block, and the left side of the movable block is provided with handle
Motor is installed, the output end of the motor is connected with driving wheel, and the right side of the riser is fixed at the top of hand, the movable block
Substrate is connected with, the substrate vertical welding is in riser, and through there is pull bar on the substrate, the pull bar is horizontally disposed with,
The left end of the pull bar is connected with flashboard, and the pull bar between the flashboard and substrate is provided with spring, the pull bar
Right-hand member is provided with draw ring.
It is preferred that, the handle is welded in movable block, and the handle is provided with anti-slip veins.
It is preferred that, the clamping block is vertically mounted to heat sink body, and the end of the clamping block is provided with oblique angle, the master
The axis in the center of circle of driving wheel, the center of circle of rotating disk and pull bar is in same level height.
It is preferred that, the flashboard is circular arc, and the flashboard is provided with anti-slip rubber layer, between the pull bar and flashboard
Welding.
The invention also provides a kind of demenstration method of higher mathematics demonstration device for probability, comprise the following steps：
S1, determine experiment number, experiment number is 600-1000 times；
S2, determine Effective Probability effective coverage；
S3, startup motor, by hand propelled movable block, making the output end of motor be connected with driving wheel close to rotating disk, and
Drive rotating disk to rotate, then make to move block reset；
S4, the step S3 terminated after 3-5 seconds, promoted pull bar, made the flashboard of pull bar left end close to rotating disk, and quickly
Rotating disk is set to stop operating；
After rotating disk in S5, the step S4 stops, the region that observation pointer is pointed to, and keep a record, then make push-and-pull
Bar resets；
S6, the content for repeating step S3-S5, and control altogether experiment number be 600-1000 times；
S7, experimental data is depicted as to form, and analysis of discussing.
A kind of higher mathematics demonstration device for probability and demenstration method that the present invention is provided, compared with prior art, pass through handle
Hand propelled movable block, makes the output end of motor be connected with driving wheel close to rotating disk, and drives rotating disk to rotate, instead of traditional manual
Rotating disk is rotated, labor intensity is reduced, step S3 terminated after 3-5 seconds, pull bar is promoted, makes the flashboard of pull bar left end is close to turn
Disk, and quickly rotating disk is stopped operating, it is not necessary to wait rotating disk to be automatically stopped rotation, save the substantial amounts of stand-by period, improve work
Make efficiency, simple to operate, practical performance is high, record 600, the experimental data of 800 and 1000 times, and be compared respectively are used
Good demonstration effect.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 for this hair driving wheel close to rotating disk when structural representation.
In figure：1 riser, 2 fixing axles, 3 rotating disks, 4 graduation marks, 5 pointers, 6 pedestals, 7 chutes, 8 movable blocks, 9 handles, 10 electricity
Machine, 11 driving wheels, 12 substrates, 13 pull bars, 14 flashboards, 15 springs, 16 draw rings.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.The specific embodiments described herein are merely illustrative of the present invention, is not used to limit
The present invention.
Embodiment one
The invention provides a kind of higher mathematics demonstration device for probability as shown in Figure 1-2, including riser 1, the riser 1
It is provided with fixing axle 2, the fixing axle 2 and is rotatably connected to rotating disk 3, the fixing axle 2 runs through rotating disk 3, the side of the rotating disk 3
Edge is provided with graduation mark 4, and the end of the fixing axle 2 is also fixedly connected with pointer 5, and the left side of the riser 1 is provided with pedestal 6, institute
The top for stating pedestal 6 is provided with chute 7, and the internal activity of chute 7 is connected with movable block 8, and the left side of the movable block 8 is provided with handle
Hand 9, the top of the movable block 8 is provided with motor 10, and the output end of the motor 10 is connected with driving wheel 11, the riser 1
Right side be fixedly connected with substrate 12, the vertical welding of substrate 12 on riser 1, the substrate 12 through there is pull bar 13,
The pull bar 13 is horizontally disposed with, and the left end of the pull bar 13 is connected with flashboard 14, between the flashboard 14 and substrate 12
Pull bar 13 is provided with spring 15, and the right-hand member of the pull bar 13 is provided with draw ring 16, and the handle 9 is welded in movable block 8, described
Handle 9 is provided with anti-slip veins, and the clamping block is vertically mounted to heat sink body, and the end of the clamping block is provided with oblique angle, institute
The axis in the center of circle, the center of circle of rotating disk 3 and pull bar 13 of driving wheel 11 is stated in same level height, the flashboard 14 is circular arc
Shape, the flashboard 14 is welded provided with anti-slip rubber layer between the pull bar 13 and flashboard 14.
As shown in Figure 1-2：The invention also provides a kind of demenstration method of higher mathematics demonstration device for probability, including it is as follows
Step：
S1, determine experiment number, experiment number is 600 times；
S2, determine Effective Probability effective coverage；
S3, startup motor, by hand propelled movable block, making the output end of motor be connected with driving wheel close to rotating disk, and
Drive rotating disk to rotate, then make to move block reset；
S4, the step S3 terminated after 3-5 seconds, promoted pull bar, made the flashboard of pull bar left end close to rotating disk, and quickly
Rotating disk is set to stop operating；
After rotating disk in S5, the step S4 stops, the region that observation pointer is pointed to, and keep a record, then make push-and-pull
Bar resets；
S6, the content for repeating step S3-S5, and control altogether experiment number be 600 times；
S7, experimental data is depicted as to form, and analysis of discussing.
Embodiment two
The invention provides a kind of higher mathematics demonstration device for probability as shown in Figure 1-2, including riser 1, the riser 1
It is provided with fixing axle 2, the fixing axle 2 and is rotatably connected to rotating disk 3, the fixing axle 2 runs through rotating disk 3, the side of the rotating disk 3
Edge is provided with graduation mark 4, and the end of the fixing axle 2 is also fixedly connected with pointer 5, and the left side of the riser 1 is provided with pedestal 6, institute
The top for stating pedestal 6 is provided with chute 7, and the internal activity of chute 7 is connected with movable block 8, and the left side of the movable block 8 is provided with handle
Hand 9, the top of the movable block 8 is provided with motor 10, and the output end of the motor 10 is connected with driving wheel 11, the riser 1
Right side be fixedly connected with substrate 12, the vertical welding of substrate 12 on riser 1, the substrate 12 through there is pull bar 13,
The pull bar 13 is horizontally disposed with, and the left end of the pull bar 13 is connected with flashboard 14, between the flashboard 14 and substrate 12
Pull bar 13 is provided with spring 15, and the right-hand member of the pull bar 13 is provided with draw ring 16, and the handle 9 is welded in movable block 8, described
Handle 9 is provided with anti-slip veins, and the clamping block is vertically mounted to heat sink body, and the end of the clamping block is provided with oblique angle, institute
The axis in the center of circle, the center of circle of rotating disk 3 and pull bar 13 of driving wheel 11 is stated in same level height, the flashboard 14 is circular arc
Shape, the flashboard 14 is welded provided with anti-slip rubber layer between the pull bar 13 and flashboard 14.
As shown in Figure 1-2：The invention also provides a kind of demenstration method of higher mathematics demonstration device for probability, including it is as follows
Step：
S1, determine experiment number, experiment number is 800 times；
S2, determine Effective Probability effective coverage；
S3, startup motor, by hand propelled movable block, making the output end of motor be connected with driving wheel close to rotating disk, and
Drive rotating disk to rotate, then make to move block reset；
S4, the step S3 terminated after 3-5 seconds, promoted pull bar, made the flashboard of pull bar left end close to rotating disk, and quickly
Rotating disk is set to stop operating；
After rotating disk in S5, the step S4 stops, the region that observation pointer is pointed to, and keep a record, then make push-and-pull
Bar resets；
S6, the content for repeating step S3-S5, and control altogether experiment number be 800 times；
S7, experimental data is depicted as to form, and analysis of discussing.
Embodiment three
The invention provides a kind of higher mathematics demonstration device for probability as shown in Figure 1-2, including riser 1, the riser 1
It is provided with fixing axle 2, the fixing axle 2 and is rotatably connected to rotating disk 3, the fixing axle 2 runs through rotating disk 3, the side of the rotating disk 3
Edge is provided with graduation mark 4, and the end of the fixing axle 2 is also fixedly connected with pointer 5, and the left side of the riser 1 is provided with pedestal 6, institute
The top for stating pedestal 6 is provided with chute 7, and the internal activity of chute 7 is connected with movable block 8, and the left side of the movable block 8 is provided with handle
Hand 9, the top of the movable block 8 is provided with motor 10, and the output end of the motor 10 is connected with driving wheel 11, the riser 1
Right side be fixedly connected with substrate 12, the vertical welding of substrate 12 on riser 1, the substrate 12 through there is pull bar 13,
The pull bar 13 is horizontally disposed with, and the left end of the pull bar 13 is connected with flashboard 14, between the flashboard 14 and substrate 12
Pull bar 13 is provided with spring 15, and the right-hand member of the pull bar 13 is provided with draw ring 16, and the handle 9 is welded in movable block 8, described
Handle 9 is provided with anti-slip veins, and the clamping block is vertically mounted to heat sink body, and the end of the clamping block is provided with oblique angle, institute
The axis in the center of circle, the center of circle of rotating disk 3 and pull bar 13 of driving wheel 11 is stated in same level height, the flashboard 14 is circular arc
Shape, the flashboard 14 is welded provided with anti-slip rubber layer between the pull bar 13 and flashboard 14.
As shown in Figure 1-2：The invention also provides a kind of demenstration method of higher mathematics demonstration device for probability, including it is as follows
Step：
S1, determine experiment number, experiment number is 1000 times；
S2, determine Effective Probability effective coverage；
S3, startup motor, by hand propelled movable block, making the output end of motor be connected with driving wheel close to rotating disk, and
Drive rotating disk to rotate, then make to move block reset；
S4, the step S3 terminated after 3-5 seconds, promoted pull bar, made the flashboard of pull bar left end close to rotating disk, and quickly
Rotating disk is set to stop operating；
After rotating disk in S5, the step S4 stops, the region that observation pointer is pointed to, and keep a record, then make push-and-pull
Bar resets；
S6, the content for repeating step S3-S5, and control altogether experiment number be 1000 times；
S7, experimental data is depicted as to form, and analysis of discussing.
In summary：Compared with prior art, movable block 8 is promoted by handle 9, the output end of motor 10 is connected with master
Driving wheel 11 drives rotating disk 3 to rotate close to rotating disk 3, instead of traditional manual rotation rotating disk 3, reduces labor intensity, step S3 knots
After beam 3-5 seconds, pull bar 13 is promoted, makes the flashboard 14 of the left end of pull bar 13 close to rotating disk 3, and rotating disk 3 is stopped operating,
Without waiting for rotating disk 3 and be automatically stopped rotation, save the substantial amounts of stand-by period, improve operating efficiency, simple to operate, practical performance
Height, record 600, the experimental data of 800 and 1000 times, and be compared respectively, using good demonstration effect.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (5)
1. a kind of higher mathematics demonstration device for probability, including riser (1), it is characterised in that：The riser (1) is provided with fixing axle
(2) rotating disk (3), is rotatably connected on the fixing axle (2), the fixing axle (2) runs through rotating disk (3), the side of the rotating disk (3)
Edge is provided with graduation mark (4), and the end of the fixing axle (2) is also fixedly connected with pointer (5), and the left side of the riser (1) is provided with
Pedestal (6), the top of the pedestal (6) is provided with chute (7), and chute (7) internal activity is connected with movable block (8), described
The left side of movable block (8) is provided with handle (9), is provided with motor (10) at the top of the movable block (8), the motor (10) it is defeated
Go out end and be connected with the right side of driving wheel (11), the riser (1) to be fixedly connected with substrate (12), substrate (12) vertical welding
In through there is pull bar (13), the pull bar (13) is horizontally disposed with, the pull bar on riser (1), the substrate (12)
(13) left end is connected with flashboard (14), and the pull bar (13) between the flashboard (14) and substrate (12) is provided with spring
(15), the right-hand member of the pull bar (13) is provided with draw ring (16).
2. a kind of higher mathematics demonstration device for probability according to claim 1, it is characterised in that：Handle (9) welding
In movable block (8), the handle (9) is provided with anti-slip veins.
3. a kind of higher mathematics demonstration device for probability according to claim 1, it is characterised in that：The driving wheel (11)
The axis in the center of circle, the center of circle of rotating disk (3) and pull bar (13) is in same level height.
4. a kind of higher mathematics demonstration device for probability according to claim 1, it is characterised in that：The flashboard (14) is circle
Arc, the flashboard (14) is welded provided with anti-slip rubber layer between the pull bar (13) and flashboard (14).
5. higher mathematics probability demenstration method described in a kind of claim 1, it is characterised in that：Comprise the following steps：
S1, determine experiment number, experiment number is 600-1000 times；
S2, determine Effective Probability effective coverage；
S3, startup motor, by hand propelled movable block, making the output end of motor be connected with driving wheel close to rotating disk, and drive
Rotating disk is rotated, and then makes to move block reset；
S4, the step S3 terminated after 3-5 seconds, promoted pull bar, made the flashboard of pull bar left end close to rotating disk, and quickly made to turn
Disk stops operating；
After rotating disk in S5, the step S4 stops, the region that observation pointer is pointed to, and keep a record, then answer pull bar
Position；
S6, the content for repeating step S3-S5, and control altogether experiment number be 600-1000 times；
S7, experimental data is depicted as to form, and analysis of discussing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563566.9A CN107256665A (en) | 2017-07-12 | 2017-07-12 | A kind of higher mathematics demonstration device for probability and demenstration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563566.9A CN107256665A (en) | 2017-07-12 | 2017-07-12 | A kind of higher mathematics demonstration device for probability and demenstration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107256665A true CN107256665A (en) | 2017-10-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710563566.9A Pending CN107256665A (en) | 2017-07-12 | 2017-07-12 | A kind of higher mathematics demonstration device for probability and demenstration method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312030A (en) * | 2019-12-13 | 2020-06-19 | 吉林师范大学 | Probability statistics teaching presentation device |
| CN113658488A (en) * | 2021-09-06 | 2021-11-16 | 安徽理工大学 | Probability theory experiment model teaching aid |
-
2017
- 2017-07-12 CN CN201710563566.9A patent/CN107256665A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312030A (en) * | 2019-12-13 | 2020-06-19 | 吉林师范大学 | Probability statistics teaching presentation device |
| CN113658488A (en) * | 2021-09-06 | 2021-11-16 | 安徽理工大学 | Probability theory experiment model teaching aid |
| CN113658488B (en) * | 2021-09-06 | 2023-01-17 | 安徽理工大学 | Probability theory experiment model teaching aid |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171017 |
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| WD01 | Invention patent application deemed withdrawn after publication |