CN202058339U - Primary school mathematics addition and subtraction demonstration device - Google Patents
Primary school mathematics addition and subtraction demonstration device Download PDFInfo
- Publication number
- CN202058339U CN202058339U CN2011201665998U CN201120166599U CN202058339U CN 202058339 U CN202058339 U CN 202058339U CN 2011201665998 U CN2011201665998 U CN 2011201665998U CN 201120166599 U CN201120166599 U CN 201120166599U CN 202058339 U CN202058339 U CN 202058339U
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- bar code
- digital
- rotor wheel
- plus
- minus
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- Expired - Fee Related
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Abstract
The utility model discloses a primary school mathematics addition and subtraction demonstration device, belonging to the technical field of teaching appliance, comprising a figure display disc (1), characterized in that on the figure display disc (1) there are provided three figure display windows (2) and one add and subtract display window (3), and inside the figure display disc (1) there are provided a figure bar code rotation wheel visible through the figure display windows (2) and an add and subtract bar code rotation wheel (4) visible through the add and subtract display window (3). The primary school mathematics addition and subtraction demonstration device is simple in structure and convenient for using, thereby not only being convenient for the teachers and students to directly demonstrate, but also increasing the learning interest of the students and reducing the work load of the teachers.
Description
Technical field
The utility model relates to the teaching aid technical field, a kind of specifically primary school mathematics plus-minus method demonstration device.
Background technology
At present, on mathematics class, teacher needs when primary school student is carried out the teaching of plus-minus method, owing to there is not visual illustration, the explanation that only relies on teacher is difficult to make the student that the understanding of a rational faculty is arranged, and especially for elementary education, primary school student is had certain degree of difficulty, can't improve the learning interest of student, influence teaching efficiency easily mathematics class.Existing way is to take in kind or demonstrate by picture by hand, and complex operation has like this increased teacher's work load.
Summary of the invention
It is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, and makes things convenient for teacher's demonstration to plus-minus method in teaching process, can improve student's learning interest, thereby alleviate the primary school mathematics plus-minus method demonstration device of teacher's work load.
In order to reach above purpose, the technical scheme that the utility model adopted is: primary school mathematics plus-minus method demonstration device, comprise digital display dial, it is characterized in that: described digital display dial is provided with 3 digital displaying windows and 1 plus-minus display window, is provided with digital bar code rotor wheel that reveals from described digital displaying window respectively and the plus-minus bar code rotor wheel that reveals from described plus-minus display window in the described digital display dial.
The utility model is also implemented by following measure: described digital bar code rotor wheel comprises the second digital bar code rotor wheel and the answer bar code rotor wheel of the first digital bar code rotor wheel, setting in parallel, and a side of described digital display dial is provided with the digital swing handle that is used for rotating respectively the described first digital bar code rotor wheel, the second digital bar code rotor wheel and answer bar code rotor wheel; The opposite side of described digital display dial is provided with the plus-minus swing handle that is used to rotate described plus-minus bar code rotor wheel.
The beneficial effects of the utility model are: by digital display dial is set, on digital display dial, be provided with a plurality of digital displaying windows and plus-minus display window, and the numeral on the digital bar code rotor wheel is revealed by digital displaying window, can rotate digital bar code rotor wheel as required like this, to realize the conversion between the different digital, thereby can carry out signed magnitude arithmetic(al) according to the numeral on two digital displaying windows, and by third digit display window demonstration operation result, make teaching more directly perceived by starting to demonstrate like this, can improve students'interest in learning; Can make things convenient for the memory of student by plus-minus bar code rotor wheel, and carry out different calculating the plus-minus symbol, simple to operation.The utility model is simple in structure, and is easy to use, not only makes things convenient for the academics and students to carry out ocular demonstration, thereby improves student's learning interest, and reduced teacher's work load.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
As shown in drawings, primary school mathematics plus-minus method demonstration device comprises digital display dial 1, is provided with 3 digital displaying windows 2 and 1 plus-minus display window 3 on digital display dial 1, the numeral of needs plus-minus and the numeral of final operation result can be revealed by digital displaying window 2, easy to use; Can make by plus-minus display window 3 add, minus sign reveals, and makes the student observe memory to the plus and minus calculation rule, makes things convenient for student's visual learning.
In digital display dial 1, be provided with digital bar code rotor wheel and plus-minus bar code rotor wheel 4.Wherein, numeral bar code rotor wheel comprises the first digital bar code rotor wheel 5, the second digital bar code rotor wheel 6 and the answer bar code rotor wheel 7 of setting in parallel, at the first digital bar code rotor wheel 5, write numeral respectively on the second digital bar code rotor wheel 6 and the answer bar code rotor wheel 7, by selecting the numeral on the first digital bar code rotor wheel 5 and the second digital bar code rotor wheel 6, can the numeral on these two bar code rotor wheels be added, subtract calculating, at last the numeral on the first digital bar code rotor wheel 5 and the second digital bar code rotor wheel 6 is added, result after subtracting shows by answer bar code rotor wheel 7, so not only make things convenient for teacher to operate, alleviated teacher's work load, and the student can intuitively remember and observe, and understanding adds, the operation rule of subtraction has improved learning interest.
A side that is positioned at first digital bar code rotor wheel 5, the second digital bar code rotor wheel 6 and answer bar code rotor wheel 7 on digital display dial 1 is provided with digital swing handle 8, can rotate first digital bar code rotor wheel 5, second digital bar code rotor wheel 6 and the answer bar code rotor wheel 7 by the digital swing handle 8 that rotates respectively on first digital bar code rotor wheel 5, the second digital bar code rotor wheel 6 and the answer bar code rotor wheel 7, different numerals is revealed from digital displaying window 2, conveniently different numerals is calculated, easy to use.
Opposite side at digital display dial 1 is provided with the plus-minus swing handle 9 that is used to rotate plus-minus bar code rotor wheel 4, is convenient to select plus and minus calculation by plus-minus swing handle 9, makes things convenient for observation of students, has improved students'interest in learning.
The utility model is simple in structure, and is easy to use, not only makes things convenient for the academics and students to carry out ocular demonstration, thereby improves student's learning interest, and reduced teacher's work load.
Claims (2)
1. primary school mathematics plus-minus method demonstration device, comprise digital display dial (1), it is characterized in that: described digital display dial (1) is provided with 3 digital displaying windows (2) and 1 plus-minus display window (3), is provided with digital bar code rotor wheel that reveals from described digital displaying window (2) respectively and the plus-minus bar code rotor wheel (4) that reveals from described plus-minus display window (3) in the described digital display dial (1).
2. primary school mathematics plus-minus method demonstration device according to claim 1, it is characterized in that: described digital bar code rotor wheel comprises the second digital bar code rotor wheel (6) and the answer bar code rotor wheel (7) of the first digital bar code rotor wheel (5), setting in parallel, and a side of described digital display dial (1) is provided with the digital swing handle (8) that is used for rotating respectively the described first digital bar code rotor wheel (5), the second digital bar code rotor wheel (6) and answer bar code rotor wheel (7); The opposite side of described digital display dial (1) is provided with the plus-minus swing handle (9) that is used to rotate described plus-minus bar code rotor wheel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201665998U CN202058339U (en) | 2011-05-24 | 2011-05-24 | Primary school mathematics addition and subtraction demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201665998U CN202058339U (en) | 2011-05-24 | 2011-05-24 | Primary school mathematics addition and subtraction demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058339U true CN202058339U (en) | 2011-11-30 |
Family
ID=45018307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201665998U Expired - Fee Related CN202058339U (en) | 2011-05-24 | 2011-05-24 | Primary school mathematics addition and subtraction demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282192A (en) * | 2014-10-17 | 2015-01-14 | 南丹县青少年学生校外活动中心 | Count demonstrator |
| CN107993526A (en) * | 2017-12-04 | 2018-05-04 | 方正圆 | Mathematical education interaction device is used in one kind teaching |
-
2011
- 2011-05-24 CN CN2011201665998U patent/CN202058339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282192A (en) * | 2014-10-17 | 2015-01-14 | 南丹县青少年学生校外活动中心 | Count demonstrator |
| CN107993526A (en) * | 2017-12-04 | 2018-05-04 | 方正圆 | Mathematical education interaction device is used in one kind teaching |
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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: 20111130 Termination date: 20120524 |