CN202033919U - Demonstration device for volume relationship between cone and cylinder - Google Patents
Demonstration device for volume relationship between cone and cylinder Download PDFInfo
- Publication number
- CN202033919U CN202033919U CN2011200141514U CN201120014151U CN202033919U CN 202033919 U CN202033919 U CN 202033919U CN 2011200141514 U CN2011200141514 U CN 2011200141514U CN 201120014151 U CN201120014151 U CN 201120014151U CN 202033919 U CN202033919 U CN 202033919U
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- CN
- China
- Prior art keywords
- cone
- cylinder
- demonstration device
- emulsion tube
- air pressure
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Abstract
A demonstration device for the volume relationship between a cone and a cylinder relates to the technical field of mathematical teaching appliances, and comprises the cone, the cylinder and an emulsion tube, wherein the bottom surfaces of the cone and the cylinder are provided with bottom surface diameter marks for displaying the cone and the cylinder with different diameters, the side surfaces of the cone and the cylinder are provided with scale marks for displaying the heights of the cone and the cylinder, air pressure balance pipes, which are plugged by wedge plugs, are arranged at the side surfaces and close to the bottoms, and when colored liquid in one container is poured into the other container, the wedge plugs are pulled out so as to achieve the purposes of balancing air pressure and facilitating liquid outflow. A communicating pipe is arranged at the tops of the cone and the cylinder and is connected via the emulsion tube so as to facilitate liquid exchange. Compared with the prior art, the demonstration device can demonstrate volume relationships between cones and cylinders of a plurality of models in a directviewing manner, increases classroom interest, and facilitates the cultivation of reverse thinking and derivation abilities of students; and the demonstration device is convenient in usage and easy in improvement, and is a teaching appliance with great popularization value.
Description
Technical field
The utility model relates to a kind of mathematics teaching aid, is cone and cylinder volume relation demonstration device specifically.
Background technology
In mathematical education, need the volume relationship between explanation and demonstration circular cone and the right cylinder, how to carry out the calculating of this respect, what a lot of teachers adopted is explanation and reasoning, and for some students, beyond affordability, how to allow the student experience relation between the two at a glance, existing teaching aid such as has only provided at the contour demonstration teaching aid in the end, and coarse, lack comparative, effect is not fine.
The utility model content
The purpose of this utility model is at the deficiency that does not now have teaching aid, and a kind of cone and cylinder volume relation demonstration device are provided.
The purpose of this utility model realizes by following technological means: cone and cylinder volume relation demonstration device, form by cone, right cylinder and emulsion tube, there is the bottom surface DDI cone and right cylinder bottom surface, mainly show the right cylinder and the cone of different-diameter; There is scale mark the side, shows the height of right cylinder and cone; There is barometric pipe the side near the bottom, and the sub-shutoff of the effective wedge plug of air pressure balance when toppling in another container, is opened the wedge shape stopper to the colored liquid of one of them container, plays equilibrium air pressure, is convenient to the purpose that liquid flows out smoothly.
Communicating pipe is arranged at described cone and right cylinder top, and communicating pipe connects by emulsion tube, is convenient to the exchange of liquid.
Compared with prior art the utlity model has following tangible advantage: can demonstrate the cone of various models and the volume relationship between the right cylinder intuitively, increase the interest in classroom, the reverse thinking and the derivation ability of being convenient to cultivate the student; Easy to use, be easy to improve, be a kind of teaching aid that promotional value is arranged very much.
Description of drawings
Fig. 1 is the utility model synoptic diagram.
Wherein 1. emulsion tubes, 2. wedge shape stopper, 3. colored liquid, 4. scale mark, 5. bottom surface DDI, 6. barometric pipe, 7. communicating pipe.
Embodiment
Below in conjunction with description of drawings the utility model is described in further detail:
The use of this cone and cylinder volume relation demonstration device is: with etc. contour cone and the right cylinder in the end be example.Assemble instrument, in cone, fill it up with colored liquid 3, emulsion tube 1 was connected on communicating pipe 7, cone stood upside down and pull out wedge shape stopper 2 on the barometric pipe 6, colored liquid 3 can slowly flow in the right cylinder, can observe the position of liquid level in right cylinder of colored liquid 3 after all flowing into, thereby contour cone in the end and the volume relationship between the right cylinder such as draw, change different right cylinders or cone and can demonstrate volume relationship between them, and then can verify and derive the formula of cone volume.
In a word, the utility model provides cone and cylinder volume relation demonstration device.The above; it only is a part of embodiment of the present utility model; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (2)
1. cone and cylinder volume relation demonstration device, form by cone, right cylinder and emulsion tube (1), it is characterized in that: there is bottom surface DDI (5) cone and right cylinder bottom surface, there is scale mark (4) side, there is barometric pipe (6) side near the bottom, barometric pipe (6) wedge shape stopper (2) shutoff.
2. cone according to claim 1 and cylinder volume relation demonstration device is characterized in that: communicating pipe (7) is arranged at cone and right cylinder top, and communicating pipe (7) connects by emulsion tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200141514U CN202033919U (en) | 2011-01-10 | 2011-01-10 | Demonstration device for volume relationship between cone and cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200141514U CN202033919U (en) | 2011-01-10 | 2011-01-10 | Demonstration device for volume relationship between cone and cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033919U true CN202033919U (en) | 2011-11-09 |
Family
ID=44896208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200141514U Expired - Fee Related CN202033919U (en) | 2011-01-10 | 2011-01-10 | Demonstration device for volume relationship between cone and cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427714A (en) * | 2016-01-05 | 2016-03-23 | 江南大学 | Instrument for verifying volume relations among sphere, cone and cylinder |
-
2011
- 2011-01-10 CN CN2011200141514U patent/CN202033919U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427714A (en) * | 2016-01-05 | 2016-03-23 | 江南大学 | Instrument for verifying volume relations among sphere, cone and cylinder |
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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: 20111109 Termination date: 20130110 |