CN203232608U - Function limit demonstration teaching aid with formula demonstration function - Google Patents
Function limit demonstration teaching aid with formula demonstration function Download PDFInfo
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- CN203232608U CN203232608U CN 201320275751 CN201320275751U CN203232608U CN 203232608 U CN203232608 U CN 203232608U CN 201320275751 CN201320275751 CN 201320275751 CN 201320275751 U CN201320275751 U CN 201320275751U CN 203232608 U CN203232608 U CN 203232608U
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Abstract
A function limit demonstration teaching aid with a formula demonstration function relates to a function limit demonstration teaching aid and may be applied to the teaching of higher mathematics. With the provided function limit demonstration teaching aid, problems are solved that a conventional function limit demonstration teaching aid with a single function cannot combine the demonstration of some formulas and the demonstration of function limits in an ingenious manner so that a teacher's teaching contents are not quite rich in the prior art. A housing is arranged on a base; a frosted glass plate and an iron plate are arranged in the housing from the font to the back; a plurality of coordinate point fixed parts are slidingly arranged on a plurality of ropes respectively; the plurality of ropes are arranged on the frosted glass plate in a function limit demonstration window through the plurality of coordinate point fixed parts so that a function curve may be changed by adjusting the positions of the coordinate point fixed parts; a first roller shutter and a second roller shutter are arranged at upper positions on the frosted glass plate successively from the left to the right; a first group of buckles and a second group of buckles are arranged at lower positions on the frosted glass plate successively from the left to the right; and two drawers are arranged on the base in a drawing manner.
Description
Technical field
The utility model relates to a kind of limit of function demonstration teaching aid, is specifically related to a kind of limit of function demonstration teaching aid that has the formula demo function.
Background technology
At present in colleges and universities, about the teaching aid of limit of function aspect seldom, substantially all be that the teacher explains at blackboard, content is abstract, be difficult for understanding, notification number is that the patent of CN20279828U has effectively solved this limit of function teaching aid and need draw different functions repeatedly, not only waste the hours of instruction in classroom, return the teacher and be with this problem of inconvenience, but find in the practical application, existing limit of function demonstration teaching aid function singleness can't cause the teachers ' teaching content abundant inadequately the demonstration of part formula and ingenious the combining of demonstration of limit of function.
The utility model content
The purpose of this utility model is in order to solve existing limit of function demonstration teaching aid function singleness, can't be with the demonstration of part formula and ingenious the combining of demonstration of limit of function, cause the teachers ' teaching content abundant inadequately, and then a kind of limit of function demonstration teaching aid that has the formula demo function is provided.
The technical solution of the utility model is: a kind of limit of function demonstration teaching aid that has the formula demo function comprises housing, base, iron plate, focussing glass, many cotton ropes and a plurality of coordinate points fixture, housing is arranged on the base, have limit of function demonstration mouth on the front end face of housing, iron plate being is brushed with the iron plate of white paint, be printed on crisscross grid and coordinate system on the iron plate, focussing glass and iron plate are successively set in the housing from front to back, the coordinate points fixture comprises inserted slot, cardboard and magnet geometrical clamp, cotton rope slidably is located on the magnet geometrical clamp, inserted slot is packed in the upper end of magnet geometrical clamp, cardboard is inserted in the inserted slot, a plurality of coordinate points fixtures are arranged on the cotton rope by described mode respectively, and all tie a knot in the two ends of cotton rope, many cotton ropes are arranged on the limit of function demonstration mouthful interior focussing glass by a plurality of coordinate points fixtures, come transform function graph by the position of adjusting the coordinate points fixture, described limit of function demonstration teaching aid also comprises first roller shutter, second roller shutter, first group of buckle, second group of buckle and two drawers, first roller shutter and second roller shutter are successively set on the top of focussing glass from left to right, be printed on formula on first roller shutter and do not have answer, be printed on answer and derivation on second roller shutter, first group of buckle and second group of buckle are successively set on the bottom of focussing glass from left to right, and first group of buckle is corresponding with the position of first roller shutter and second roller shutter respectively with second group of buckle, but two drawer pulls are arranged on the base.
Described crisscross grid is yellow grid, and coordinate is green coordinate system or red scale system.
Described first group of buckle is and the matching used buckle of first roller shutter that second group of buckle is and the matching used buckle of second roller shutter.
The utility model compared with prior art has following effect:
1. the utility model is provided with two drawers at base, in order to place many cotton ropes and a plurality of coordinate points fixture, is convenient to the management of cotton rope and coordinate points fixture.2. being printed on formula on the utility model first roller shutter does not have answer, is printed on answer and derivation on second roller shutter, is convenient to put question to and check student's results of learning.3. the utility model not only can be demonstrated limit of function, can also demonstrate mathematical formulae, with formula demonstration and ingenious being attached on the same teaching aid of limit of function demonstration, has enriched teacher's lecture contents, has increased the impression that the student listens to the teacher, and improves school grade.4. the utility model is simple in structure, is easy to realize, is convenient to promote the use of on a large scale.
Description of drawings
Fig. 1 is one-piece construction synoptic diagram of the present utility model; Fig. 2 is the structural representation of the utility model coordinate points fixture.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, present embodiment comprises housing 1, base 2, iron plate 3, focussing glass 4, many cotton ropes 5 and a plurality of coordinate points fixture 6, housing 1 is arranged on the base 2, have limit of function demonstration mouthful 1-1 on the front end face of housing 1, iron plate 3 is for being brushed with the iron plate of white paint, be printed on crisscross grid 3-1 and coordinate system 3-2 on the iron plate 3, focussing glass 4 and iron plate 3 are successively set in the housing 1 from front to back, coordinate points fixture 6 comprises inserted slot 6-1, cardboard 6-2 and magnet geometrical clamp 6-3, cotton rope 5 slidably is located on the magnet geometrical clamp 6-3, inserted slot 6-1 is packed in the upper end of magnet geometrical clamp 6-3, cardboard 6-2 is inserted in the inserted slot 6-1, a plurality of coordinate points fixtures 6 are arranged on the cotton rope 5 by described mode respectively, and all tie a knot in the two ends of cotton rope 5, many cotton ropes 5 are arranged on the focussing glass 4 in the limit of function demonstration mouthful 1-1 by a plurality of coordinate points fixtures 6, come transform function graph by the position of adjusting coordinate points fixture 6, described limit of function demonstration teaching aid also comprises first roller shutter 7, second roller shutter 8, first group of buckle 9, second group of buckle 10 and two drawers 11, first roller shutter 7 and second roller shutter 8 are successively set on the top of focussing glass 4 from left to right, be printed on formula on first roller shutter 7 and do not have answer, be printed on answer and derivation on second roller shutter 8, first group of buckle 9 and second group of buckle 10 are successively set on the bottom of focussing glass 4 from left to right, and first group of buckle 9 is corresponding with the position of first roller shutter 7 and second roller shutter 8 respectively with second group of buckle 10, but two drawer 11 pulls are arranged on the base 2, described crisscross grid 3-1 is yellow grid, coordinate system 3-2 is green coordinate system or red scale system, described first group of buckle 9 is to be and second roller shutter, 8 matching used buckles 10 with 9, the second groups of buckles of first roller shutter, 7 matching used buckles 10.
The crisscross grid 3-1 of present embodiment is yellow grid, and coordinate system 3-2 is green coordinate system or red scale system.So arrange, yellow grid is convenient to the position that the teacher finds suitable coordinate points fixture 6 fast, and the student does not see the Chu Huangse grid, avoided the inconvenience that too much brings to the student because of lines, green coordinate system or red scale system can guarantee that the student sees coordinate system and cotton rope 5 clearly, has improved students'interest in learning.
The utility model can be write mark at cardboard 6-2 in use, has brought convenience for giving lessons of teacher.Simultaneously, according to different function formulas, adjust the quantity that coordinate points fixture 6 is installed at cotton rope 5, thereby realize the demonstration of different limit of function.
Claims (3)
1. limit of function demonstration teaching aid that has the formula demo function, it comprises housing (1), base (2), iron plate (3), focussing glass (4), many cotton ropes (5) and a plurality of coordinate points fixture (6), housing (1) is arranged on the base (2), have limit of function demonstration mouthful (1-1) on the front end face of housing (1), iron plate (3) is for being brushed with the iron plate of white paint, be printed on crisscross grid (3-1) and coordinate system (3-2) on the iron plate (3), focussing glass (4) and iron plate (3) are successively set in the housing (1) from front to back, coordinate points fixture (6) comprises inserted slot (6-1), cardboard (6-2) and magnet geometrical clamp (6-3), cotton rope (5) slidably is located on the magnet geometrical clamp (6-3), inserted slot (6-1) is packed in the upper end of magnet geometrical clamp (6-3), cardboard (6-2) is inserted in the inserted slot (6-1), a plurality of coordinate points fixtures (6) are arranged on the cotton rope (5) by described mode respectively, and all tie a knot in the two ends of cotton rope (5), many cotton ropes (5) are arranged on the interior focussing glass (4) of limit of function demonstration mouthful (1-1) by a plurality of coordinate points fixtures (6), come transform function graph by the position of adjusting coordinate points fixture (6), it is characterized in that: described limit of function demonstration teaching aid also comprises first roller shutter (7), second roller shutter (8), first group of buckle (9), second group of buckle (10) and two drawers (11), first roller shutter (7) and second roller shutter (8) are successively set on the top of focussing glass (4) from left to right, be printed on formula on first roller shutter (7) and do not have answer, second roller shutter is printed on answer and derivation on (8), first group of buckle (9) and second group of buckle (10) are successively set on the bottom of focussing glass (4) from left to right, and first group of buckle (9) is corresponding with the position of first roller shutter (7) and second roller shutter (8) respectively with second group of buckle (10), two drawers (11) but pull be arranged on the base (2).
2. a kind of limit of function demonstration teaching aid that has the formula demo function according to claim 1, it is characterized in that: described crisscross grid (3-1) is yellow grid, coordinate system (3-2) is green coordinate system or red scale system.
3. a kind of limit of function demonstration teaching aid that has the formula demo function according to claim 2, it is characterized in that: described first group of buckle (9) is and the matching used buckle of first roller shutter (7) (9) that second group of buckle (10) is and the matching used buckle (10 of second roller shutter (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320275751 CN203232608U (en) | 2013-05-20 | 2013-05-20 | Function limit demonstration teaching aid with formula demonstration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320275751 CN203232608U (en) | 2013-05-20 | 2013-05-20 | Function limit demonstration teaching aid with formula demonstration function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232608U true CN203232608U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320275751 Expired - Fee Related CN203232608U (en) | 2013-05-20 | 2013-05-20 | Function limit demonstration teaching aid with formula demonstration function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610559A (en) * | 2017-09-19 | 2018-01-19 | 张汕 | A kind of high school mathematicses parabola hyperbola ellipse schooling apparatus |
-
2013
- 2013-05-20 CN CN 201320275751 patent/CN203232608U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610559A (en) * | 2017-09-19 | 2018-01-19 | 张汕 | A kind of high school mathematicses parabola hyperbola ellipse schooling apparatus |
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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: 20131009 Termination date: 20140520 |