CN203759934U - Teaching aid for demonstration of law of quantitative and qualitative changes - Google Patents
Teaching aid for demonstration of law of quantitative and qualitative changes Download PDFInfo
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- CN203759934U CN203759934U CN201420181206.4U CN201420181206U CN203759934U CN 203759934 U CN203759934 U CN 203759934U CN 201420181206 U CN201420181206 U CN 201420181206U CN 203759934 U CN203759934 U CN 203759934U
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Abstract
The utility model discloses a teaching aid for demonstration of law of quantitative and qualitative changes, and belongs to teaching aids for political lessons. The teaching aid comprises a transparent water tank, a water pipe, a supporting rod, a hinge, a straight bar, an open container, a ball, a support and a submersible pump arranged at the bottom of the transparent water tank. The lower end of the supporting rod is connected to the bottom of the transparent water tank, and the upper end of the supporting rod is connected to the middle of the straight bar through the hinge; the open container is arranged at one end of the straight bar, and the ball is arranged at the other end of the straight bar; one end of the water pipe is connected to the water outlet of the submersible pump, and the other end of the water pipe is fixed above the open container through the support. The teaching aid is capable of demonstrating the law of quantitative and qualitative changes to students so that the students can understand the studied contents easily.
Description
Technical field
The utility model relates to a kind of law of quantitative change and quanlitative change demonstration teaching aid, belongs to politics lesson demonstration teaching aid.
Background technology
Quantitative change refers to that gradually, inapparent variation occur things in quantity and degree; Qualitative change refers to that variation significant, fundamental character has occurred things.The quantitative change Shi Caineng that only acquires a certain degree causes qualitative change.In politics lesson, teacher need to tell about to student the relation of quantitative change and qualitative change, but owing to lacking special demonstration teaching aid, student can not understand content intuitively.
Utility model content
The utility model, for the problem in background technology, proposes a kind of law of quantitative change and quanlitative change demonstration teaching aid.
The utility model, for overcoming the above problems, adopts following technical scheme:
A kind of law of quantitative change and quanlitative change demonstration teaching aid, comprises transparent water vat, water pipe, support bar, hinge, straight-bar, open-top receptacle, spheroid, support and is located at the submersible pump of transparent water cylinder bottom portion; The lower end of described support bar is connected with transparent water cylinder bottom portion, and the upper end of support bar is connected with straight-bar middle part by hinge; Described open-top receptacle is located at one end of straight-bar, and described spheroid is located at the other end of straight-bar; One end of described water pipe is connected with the water delivering orifice of submersible pump, and the other end of water pipe is fixed on open-top receptacle top by support.
As scheme optimization, the utility model also comprises lower limit baffle plate and upper limit baffle plate; Described lower limit baffle plate is connected with support bar is vertical; Described upper limit baffle plate is vertically located at post upper.
Preferably, described open-top receptacle adopts transparent material to make.
Technique effect:
1, the utility model can be demonstrated the relation of quantitative change and qualitative change intuitively to student, is convenient to student and understands content.
2, the utility model can be realized automatic cycle demonstration without manual intervention, designs ingenious, easy to use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the constitutional diagram after straight-bar rotates counterclockwise.
Label title in Fig. 1, Fig. 2: 1, transparent water vat; 2, submersible pump; 3, water pipe; 4, support bar; 5, hinge; 6, straight-bar; 7, open-top receptacle; 8, spheroid; 9, lower limit baffle plate; 10, upper limit baffle plate; 11, water; 12, support.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is done in further detail and is introduced:
Structure of the present utility model as shown in Figure 1, comprises transparent water vat 1, water pipe 3, support bar 4, hinge 5, straight-bar 6, open-top receptacle 7, spheroid 8, support 12 and is located at the submersible pump 2 of transparent water vat 1 bottom; The lower end of described support bar 4 is connected with transparent water vat 1 bottom, and the upper end of support bar 4 is connected with straight-bar 6 middle parts by hinge 5; Described open-top receptacle 7 is located at one end of straight-bar 6, and described spheroid 8 is located at the other end of straight-bar 6; One end of described water pipe 3 is connected with the water delivering orifice of submersible pump 2, and the other end of water pipe 3 is fixed on open-top receptacle 7 tops by support 12.
As scheme optimization, the utility model also comprises lower limit baffle plate 9 and upper limit baffle plate 10; Described lower limit baffle plate 9 is connected with support bar 4 is vertical; Described upper limit baffle plate 10 is vertically located at support bar 4 upper ends; Described open-top receptacle 7 adopts transparent material to make, the variation of being convenient to student and seeing the water yield in open-top receptacle 7 clearly; Described spheroid 8 can adopt solid iron ball, weight when its weight is greater than open-top receptacle 7 and is not filled with water, and weight while being less than open-top receptacle 7 filled with water; Described transparent water vat 1 adopts organic glass to make, and a certain amount of water 11 is equipped with in its inside; Described submersible pump 2 is for pumping to the water of transparent water vat 1 other end of water pipe 3 from one end of water pipe 3.
When demonstration, teacher only need be by the power connection of submersible pump 2, submersible pump 2 just can be started working, and the water in transparent water vat 1 is pumped to the other end of water pipe 3 from one end of water pipe 3, the water flowing out from water pipe 3 can constantly fall into open-top receptacle 7, in the time that the weight of water in open-top receptacle 7 and the weight sum of open-top receptacle 7 are greater than spheroid 8 weight, straight-bar 6 can rotate counterclockwise along hinge 5, until spheroid 8 is blocked (as shown in Figure 2) by upper limit baffle plate 10, now, the water in open-top receptacle 7 can be introduced in transparent water vat 1.Afterwards, because spheroid 8 weight are greater than the weight of open-top receptacle 7, straight-bar 6 can clockwise rotate along hinge 5, until spheroid 8 is blocked (as shown in Figure 1) by lower limit baffle plate 9, the water flowing out from water pipe 3 can continue to fall into open-top receptacle 7, and repeats above process.
In above demonstration, the water in open-top receptacle 7 is on the increase (being equivalent to quantitative change), until straight-bar 6 rotates and the water in open-top receptacle 7 is poured out to (being equivalent to qualitative change), has disclosed the quantitative change Shi Caineng that only acquires a certain degree and has caused qualitative change.Whole presentation process has good intuitive, is convenient to student and understands content.
Claims (3)
1. a law of quantitative change and quanlitative change demonstration teaching aid, is characterized in that: comprise transparent water vat (1), water pipe (3), support bar (4), hinge (5), straight-bar (6), open-top receptacle (7), spheroid (8), support (12) and be located at the submersible pump (2) of transparent water vat (1) bottom; The lower end of described support bar (4) is connected with transparent water vat (1) bottom, and the upper end of support bar (4) is connected with straight-bar (6) middle part by hinge (5); Described open-top receptacle (7) is located at one end of straight-bar (6), and described spheroid (8) is located at the other end of straight-bar (6); One end of described water pipe (3) is connected with the water delivering orifice of submersible pump (2), and the other end of water pipe (3) is fixed on open-top receptacle (7) top by support (12).
2. a kind of law of quantitative change and quanlitative change demonstration teaching aid according to claim 1, is characterized in that: also comprise lower limit baffle plate (9) and upper limit baffle plate (10); Described lower limit baffle plate (9) and vertical connection of support bar (4); Described upper limit baffle plate (10) is vertically located at support bar (4) upper end.
3. a kind of law of quantitative change and quanlitative change demonstration teaching aid according to claim 1, is characterized in that: described open-top receptacle (7) adopts transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181206.4U CN203759934U (en) | 2014-04-15 | 2014-04-15 | Teaching aid for demonstration of law of quantitative and qualitative changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181206.4U CN203759934U (en) | 2014-04-15 | 2014-04-15 | Teaching aid for demonstration of law of quantitative and qualitative changes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759934U true CN203759934U (en) | 2014-08-06 |
Family
ID=51255181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181206.4U Expired - Fee Related CN203759934U (en) | 2014-04-15 | 2014-04-15 | Teaching aid for demonstration of law of quantitative and qualitative changes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633738A (en) * | 2017-09-27 | 2018-01-26 | 刘道灵 | A kind of philosophizing demonstration teaching aid |
-
2014
- 2014-04-15 CN CN201420181206.4U patent/CN203759934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633738A (en) * | 2017-09-27 | 2018-01-26 | 刘道灵 | A kind of philosophizing 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 |
Granted publication date: 20140806 Termination date: 20150415 |
|
| EXPY | Termination of patent right or utility model |