CN208367978U - Primary school mathematics arithmetic apparatus for demonstrating - Google Patents
Primary school mathematics arithmetic apparatus for demonstrating Download PDFInfo
- Publication number
- CN208367978U CN208367978U CN201820092548.7U CN201820092548U CN208367978U CN 208367978 U CN208367978 U CN 208367978U CN 201820092548 U CN201820092548 U CN 201820092548U CN 208367978 U CN208367978 U CN 208367978U
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- China
- Prior art keywords
- grid
- arm
- display board
- primary school
- frame
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model belongs to math teaching tool for primary school field, more particularly to a kind of primary school mathematics arithmetic apparatus for demonstrating, including pedestal, pedestal is fixedly arranged above display board, the leading flank of display board is equipped with grid and writes area, grid is formed by several small square composites, connection frame corresponding with grid is fixed on front side of display board, the lower arm for connecting frame is equipped with dial corresponding with grid with left arm, it connects and slidably connects longitudinal scale between the upper arm and lower arm of frame, it connects and slidably connects lateral scale between the left arm and right arm of frame, the top two sides of display board are respectively and fixedly provided with linking arm, connecting rod is fixed between two linking arms, several sliding pearls are slidably connected in connecting rod.The utility model is simple and reasonable, can demonstrate the arithmetic of primary school mathematics, effectively excite the learning interest of pupil, to improve the quality of instruction of mathematics teacher.
Description
Technical field
The utility model relates to a kind of primary school mathematics arithmetic apparatus for demonstrating, belong to math teaching tool for primary school field.
Background technique
Arithmetic refers to four kinds of addition, subtraction, multiplication and division operations.Arithmetic is the important interior of primary school mathematics
Hold, and the basis of the other mathematically related knowledge of study, so its qualification and mathematical ability are closely related.
In traditional primary school math teaching, teacher is typically all to carry out four fundamental rules by way of writing directly on blackboard
The explanation and teaching of operation, this form is very dull, can not excite the learning interest of pupil, causes pupil's attention not
It concentrates, quality of instruction is poor.
Utility model content
According to the above-mentioned deficiencies in the prior art, technical problem to be solved by the utility model is: providing a kind of structure letter
It is single reasonable, it can effectively excite the primary school mathematics arithmetic apparatus for demonstrating of pupil's learning interest.
Primary school mathematics arithmetic apparatus for demonstrating described in the utility model, including pedestal, pedestal are fixedly arranged above exhibition
Show that plate, the leading flank of display board are equipped with grid and write area, grid is formed by several small square composites, the front side of display board
It is fixed with connection frame corresponding with grid, the lower arm of frame is connected and left arm is equipped with dial corresponding with grid, connection
Longitudinal scale is slidably connected between the upper arm and lower arm of frame, connects and slidably connects lateral mark between the left arm of frame and right arm
Ruler, the top two sides of display board are respectively and fixedly provided with linking arm, and connecting rod is fixed between two linking arms, is slidably connected in connecting rod
Several sliding pearls.
Handle is equipped between two above-mentioned linking arms, convenient for the carrying of the utility model.
Above-mentioned connecting rod is " Z " type, can effectively be distinguished not used sliding pearl with the cunning pearl used, convenient for pupil's
Study.
Above-mentioned grid is square, and structure is more reasonable.
Operation principle and process:
It writes in area in use, several arithmetic topics can be listed in by mathematics teacher, when demonstrating add operation, can divide
The cunning pearl of corresponding number is not slided to the right according to the numerical value of summand and addend, the number of the total cunning pearl slided to the right is quilt
Addend and addend and；When demonstrating subtraction, the cunning pearl of corresponding number can be slided to the right according to the numerical value of minuend, then
Slide back to the cunning pearl of corresponding number to the left according to the numerical value of subtrahend, then the number of the remaining sliding pearl of right end is minuend and subtrahend
Difference；When demonstrating multiplying, can first slide longitudinal scale to the right according to the numerical value of multiplicand to corresponding position, then further according to
The numerical value upward sliding transverse direction scale of multiplier is to corresponding position, then longitudinal scale and lateral scale sliding are formed by enclosure space
The number of interior small square is the product of multiplicand and multiplier；When demonstrating division arithmetic, can first according to the numerical value of divisor to
The longitudinal scale of right sliding is to corresponding position, then further according to the numerical value upward sliding transverse direction scale of dividend, meanwhile, to longitudinal mark
The number for the small square that ruler is formed by enclosure space with lateral scale sliding is counted, when small square number and
When the numerical value of dividend is equal, stop sliding lateral scale, then the registration of dial corresponding to lateral scale is dividend
With the quotient of divisor.
Possessed beneficial effect is the utility model compared with prior art:
Primary school mathematics arithmetic apparatus for demonstrating described in the utility model, it is simple and reasonable, it can be to primary school mathematics
Arithmetic is demonstrated, and the learning interest of pupil is effectively excited, to improve the quality of instruction of mathematics teacher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of display board in Fig. 1；
Fig. 3 is the structural schematic diagram that frame is connected in Fig. 1.
In figure: 1, pedestal；2, display board；3, frame is connected；4, dial；5, grid；6, lateral scale；7, longitudinal scale；
8, linking arm；9, sliding pearl；10, handle；11, connecting rod；12, area is write.
Specific embodiment
The embodiments of the present invention are described further with reference to the accompanying drawing:
As shown in Figure 1 to Figure 3, primary school mathematics arithmetic apparatus for demonstrating described in the utility model, including pedestal 1, bottom
Seat 1 is fixedly arranged above display board 2, and the leading flank of display board 2 is equipped with grid 5 and writes area 12, and grid 5 is by several small pros
Shape is composed, and the front side of display board 2 is fixed with connection frame 3 corresponding with grid 5, is connected and is set on the lower arm and left arm of frame 3
There is dial 4 corresponding with grid 5, connects and slidably connect longitudinal scale 7 between the upper arm and lower arm of frame 3, connection frame 3
Lateral scale 6 is slidably connected between left arm and right arm, the top two sides of display board 2 are respectively and fixedly provided with linking arm 8, two linking arms 8
Between be fixed with connecting rod 11, several sliding pearls 9 are slidably connected in connecting rod 11.
In preferred embodiment: handle 10 is equipped between two linking arms 8, convenient for the carrying of the utility model；Connecting rod 11 is
" Z " type can effectively distinguish not used sliding pearl 9 with the cunning pearl 9 used, convenient for the study of pupil；Grid 5 is square,
Structure is more reasonable.
It is write in area 12 in use, several arithmetic topics can be listed in by mathematics teacher, it, can when demonstrating add operation
Slide the cunning pearl 9 of corresponding number to the right according to the numerical value of summand and addend respectively, the number of the total cunning pearl 9 slided to the right is i.e.
For summand and addend and；When demonstrating subtraction, the cunning pearl of corresponding number can be slided to the right according to the numerical value of minuend
9, then slide back to the cunning pearl 9 of corresponding number to the left according to the numerical value of subtrahend, then the number of the remaining sliding pearl 9 of right end is minuend
With the difference of subtrahend；When demonstrating multiplying, longitudinal scale 7 can be first slided to the right according to the numerical value of multiplicand to corresponding position,
Then further according to the numerical value upward sliding transverse direction scale 6 of multiplier to corresponding position, then longitudinal scale 7 slides institute with lateral scale 6
The number of small square in the enclosure space of formation is the product of multiplicand and multiplier；It, can first root when demonstrating division arithmetic
Longitudinal scale 7 is slided to the right to corresponding position according to the numerical value of divisor, is then laterally marked further according to the numerical value upward sliding of dividend
Ruler 6, meanwhile, the number for sliding the small square being formed by enclosure space with lateral scale 6 to longitudinal scale 7 is counted
Number stops sliding lateral scale 6 when the number of small square is equal with the numerical value of dividend, then corresponding to lateral scale 6
The registration of dial 4 is the quotient of dividend and divisor.
Primary school mathematics arithmetic apparatus for demonstrating described in the utility model, it is simple and reasonable, it can be to primary school mathematics
Arithmetic is demonstrated, and the learning interest of pupil is effectively excited, to improve the quality of instruction of mathematics teacher.
Claims (4)
1. a kind of primary school mathematics arithmetic apparatus for demonstrating, including pedestal (1), it is characterised in that: pedestal (1) is fixedly arranged above
Display board (2), the leading flank of display board (2) are equipped with grid (5) and write area (12), and grid (5) is by several small square groups
It closes, connection frame (3) corresponding with grid (5) is fixed on front side of display board (2), connect the lower arm and left arm of frame (3)
It is equipped with dial (4) corresponding with grid (5), connects and slidably connects longitudinal scale between the upper arm and lower arm of frame (3)
(7), it connects and is slidably connected lateral scale (6) between the left arm and right arm of frame (3), the top two sides of display board (2) are fixed
Have linking arm (8), be fixed between two linking arms (8) connecting rod (11), several sliding pearls are slidably connected in connecting rod (11)
(9)。
2. primary school mathematics arithmetic apparatus for demonstrating according to claim 1, it is characterised in that: two linking arms
(8) handle (10) are equipped between.
3. primary school mathematics arithmetic apparatus for demonstrating according to claim 1 or 2, it is characterised in that: the connecting rod
It (11) is " Z " type.
4. primary school mathematics arithmetic apparatus for demonstrating according to claim 1 or 2, it is characterised in that: the grid (5)
It is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820092548.7U CN208367978U (en) | 2018-01-19 | 2018-01-19 | Primary school mathematics arithmetic apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820092548.7U CN208367978U (en) | 2018-01-19 | 2018-01-19 | Primary school mathematics arithmetic apparatus for demonstrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367978U true CN208367978U (en) | 2019-01-11 |
Family
ID=64913044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820092548.7U Expired - Fee Related CN208367978U (en) | 2018-01-19 | 2018-01-19 | Primary school mathematics arithmetic apparatus for demonstrating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208367978U (en) |
-
2018
- 2018-01-19 CN CN201820092548.7U patent/CN208367978U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190111 Termination date: 20200119 |