CN201177887Y - Teaching tool for teaching demonstrator - Google Patents
Teaching tool for teaching demonstrator Download PDFInfo
- Publication number
- CN201177887Y CN201177887Y CNU2008200212768U CN200820021276U CN201177887Y CN 201177887 Y CN201177887 Y CN 201177887Y CN U2008200212768 U CNU2008200212768 U CN U2008200212768U CN 200820021276 U CN200820021276 U CN 200820021276U CN 201177887 Y CN201177887 Y CN 201177887Y
- Authority
- CN
- China
- Prior art keywords
- demonstration
- dolly
- teaching
- teaching aid
- ball
- 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
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Abstract
The utility model relates to a teaching model, in particular to a demonstration teaching aid. The demonstration teaching aid has the technical proposal that the teaching aid is mainly composed of a dolly, a demonstration plate and a demonstration ball; the dolly has a concave structure; the demonstration ball is matched with an arc orbital groove formed on the top part of the dolly in a sliding manner; vehicle wheels are arranged at the bottom part of the dolly; and the vehicle wheels are in contact with the demonstration plate. The demonstration teaching aid has the advantages that the dolly moves toward the opposite direction along with the movement of the demonstration ball, the experimental effects are obvious, and students can be promoted to understand the conservation law better.
Description
One, technical field:
The utility model relates to a kind of teaching mode, particularly relates to a kind of teaching demonstration teaching aid.
Two, background technology:
The content of the law of conservation of momentum on the physics is: it is zero that a system is not subjected to external force or suffered external force sum, and the aggregate momentum of this system remains unchanged, and this conclusion is called the law of conservation of momentum.(1) law of conservation of momentum is one of occurring in nature the most general most important law of conservation, and it both had been applicable to macro object, also is applicable to microscopic particle; Both be applicable to the low-speed motion object, and also be applicable to high-speed moving object, it is an experiment law, and also available Newton third law and theorem of momentum derive out; (2) have the objects system of acting force to be called system each other, intrasystem object can be two, three or more, will be as required when solving practical problems and find the solution the comfort level of problem, reasonably selective system.Existing teaching mode is because not too directly perceived, and the student begins to learn some difficulties in the understanding.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of teaching demonstration teaching aid that effect is obvious, the student understands easily of demonstrating is provided.
Its technical scheme is: mainly by dolly, demonstration is dull and stereotyped and the demonstration ball is formed, described dolly is a concave structure, the arc track trough roller of demonstration ball and little roof movingly, the dolly bottom is provided with wheel, wheel with demonstrate flat board and contact.
The length that preferred scheme is the arc track groove of little roof is more than 1 meter, and long as far as possible distance can make experiment effect more obvious.
The beneficial effects of the utility model are: along with moving of demonstration ball, dolly also moves round about, and experiment effect is obvious, can be to impel beginning student better to understand law of conservation.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Five, embodiment:
In conjunction with the accompanying drawings, the utility model will be further described:
Its technical scheme is: mainly be made up of dolly 2, demonstration dull and stereotyped 1 and demonstration ball 4, described dolly 2 is a concave structure, and demonstration ball 4 rolls with the arc track groove 5 of little roof and cooperates, and the dolly bottom is provided with wheel 3, and wheel contacts with demonstration dull and stereotyped 1.The demonstration ball is when arc track groove mobile, dolly also moves round about, be set to slide or rough by demonstrating flat board, also can better understand the law of conservation of momentum, wherein, with the length of the arc track groove 5 of little roof is more than 1 meter or longer distance, can make experiment effect more obvious.
Claims (2)
1, a kind of teaching demonstration teaching aid, it is characterized in that: mainly form by dolly (2), demonstration dull and stereotyped (1) and demonstration ball (4), described dolly (2) is a concave structure, demonstration ball (4) rolls with the arc track groove (5) of little roof and cooperates, the dolly bottom is provided with wheel (3), and wheel contacts with demonstration dull and stereotyped (1).
2, teaching demonstration teaching aid according to claim 1 is characterized in that: the length of the arc track groove (5) of described little roof is more than 1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200212768U CN201177887Y (en) | 2008-04-22 | 2008-04-22 | Teaching tool for teaching demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200212768U CN201177887Y (en) | 2008-04-22 | 2008-04-22 | Teaching tool for teaching demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177887Y true CN201177887Y (en) | 2009-01-07 |
Family
ID=40217910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200212768U Expired - Fee Related CN201177887Y (en) | 2008-04-22 | 2008-04-22 | Teaching tool for teaching demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177887Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011084083A1 (en) * | 2010-01-11 | 2011-07-14 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Нижегородский Государственный Университет Им. H. И. Лобачевского" | Educational and recreational device |
-
2008
- 2008-04-22 CN CNU2008200212768U patent/CN201177887Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011084083A1 (en) * | 2010-01-11 | 2011-07-14 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Нижегородский Государственный Университет Им. H. И. Лобачевского" | Educational and recreational 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: 20090107 |