CN87100045A - Children's addition-subtraction slide rule - Google Patents
Children's addition-subtraction slide rule Download PDFInfo
- Publication number
- CN87100045A CN87100045A CN 87100045 CN87100045A CN87100045A CN 87100045 A CN87100045 A CN 87100045A CN 87100045 CN87100045 CN 87100045 CN 87100045 A CN87100045 A CN 87100045A CN 87100045 A CN87100045 A CN 87100045A
- Authority
- CN
- China
- Prior art keywords
- dish
- scale
- moving chi
- children
- moving
- 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.)
- Pending
Links
Images
Abstract
The invention provides a kind of children's addition-subtraction slide rule, it is made up of scale dish, moving chi dish, vernier pointer.Have the equal and scale in correspondence with each other of distance on scale dish, moving chi dish, make the scale displacement by moving moving chi dish, thereby calculate the result quickly and accurately, it is adapted to the basic exercise that children carry out plus and minus calculation.
Description
The present invention relates to a kind of slipstick, particularly a kind of children's addition-subtraction slide rule is applicable to children's basic plus and minus calculation during immunologing mathematics just.
Children can run into a lot of difficulties when begining to learn plus-minus method, the finger, the toe that have have all been used, the children that entered a school that particularly have, owing to lack portable operational tool, have to be with the pencil in the writing case, rubber all as the object of making an inventory of.The computational tool that occurs from the existing market has electronic calculator, pearl formula counter etc., uses electronic calculator from children, lacks the understanding of imagery, from using pearl formula counter, because volume is excessive, is not easy to carry.
The objective of the invention is to provide a kind of children's addition-subtraction slide rule, and it not only can add and subtract calculating visually, and can also verify operation result.
Invention is achieved in that and is equipped with the adjustable rule dish that can twitch or rotate on the fixed ruler dish, chi is marked with scale, and the distance between scale all equates, the other arabic numeral that are arranged in order that indicate of each scale, when plus and minus calculation, by mobile adjustable rule, just can draw result of calculation in corresponding point according to the size of displacement.
For realizing purpose of the present invention, slipstick can be made into the ruler type that can twitch and two kinds of the garden disc type that can rotate, and the concrete structure of invention is provided by following examples and accompanying drawing thereof.
Figure one is the front view (FV) of ruler type addition-subtraction slide rule.
Figure two is sectional views of ruler type addition-subtraction slide rule.
Figure three is front view (FV)s of garden disc type addition-subtraction slide rule.
Figure four is sectional views of garden disc type addition-subtraction slide rule.
With reference to figure one, scale dish " 1 " has the twice dovetail groove, the slideway that is chi dish " 2 " together of broad wherein, narrower is the slideway of vernier pointer " 3 " together, the top of scale dish has a centimetre chi scale " 7 ", a slipstick and a centimetre chi are combined, for study is provided convenience, the below of moving chi dish slideway has the equidistant scale sign of a row, and scale sign below indicates the arabic numeral " 4 " that are arranged in order, and its effect is the position of being convenient to search counting, simultaneously be convenient to verify result of calculation again, scale numbering is unsuitable too much, and 20 get final product with interior, mainly are to carry out basic exercise.Move the identical scale numbering " 5 " of scale numbering " 4 " that has on the chi dish " 2 " with on the scale dish, both scale unit's unifications are for after moving several scales at moving chi dish " 2 ", still there is number corresponding with it on the scale dish " 1 ", for the ease of twitching moving chi dish " 2 ", a handle " 6 " is installed at the right-hand member of moving chi dish " 2 ".
The principle of work of Fig. 3 is identical with figure one, it adopts the garden disc type, form by the moving chi dish " 2 " of scale dish " 1 ", pointer " 3 ", with the garden heart is rotating shaft, scale dish " 1 " is bigger than the external diameter of moving chi dish " 2 ", scale numbering on scale numbering " 4 " on the scale dish " 1 " and the moving chi dish " 2 " in correspondence with each other, the distance between scale equates, leaves handle " 6 " on the moving chi dish.
During use, move moving chi dish " 2 ", utilize the digital potential difference on moving chi dish and the scale dish to calculate the result.When carrying out additional calculation, at first on the scale dish, determine an addend, will move this number of 0 bit alignment on the chi dish then, on moving chi dish, look into several another one addends again, the corresponding point of this addend are exactly result of calculation.Shown in figure one, figure three, carry out 3+5 and calculate, on scale dish " 1 ", find earlier numeral 3, will move this number of 0 bit alignment of chi dish " 2 ", on moving chi dish " 2 ", look into several another one addends 5 again, the corresponding point of numeral 5 are exactly answer 8.Subtraction is the inverse operation of addition, as carries out 8-5 and calculate, as long as with the two digits alignment, checks that again 0 corresponding point on the moving chi dish " 2 " are exactly operation result 3.
This chi is of value to children's intellectual development, is the aid of study.
Claims (3)
1, a kind of children's addition-subtraction calculation element of being made up of scale dish " 1 ", moving chi dish " 2 ", vernier pointer " 3 " is characterized in that:
(1) have equidistant scale sign on scale dish " 1 ", the moving chi dish " 2 ",
(2) the scale sign is other indicates since 0 Arabic numerals that are arranged in order " 4 ", " 5 ",
(3) the scale sign on scale dish " 1 " and the moving chi dish " 2 " in correspondence with each other,
2, device according to claim 1 is characterized in that scale dish " 1 ", moving chi dish " 2 " can make ruler type and garden disc type, and scale numbering " 4 ", " 5 " line spread or ring shooting are on scale dish " 1 ", moving chi dish " 2 ".
3, according to claim 1,2 described devices, it is characterized in that moving chi dish " 2 " can upward move at scale dish " 1 ", thereby make scale produce displacement, reach the computing purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100045 CN87100045A (en) | 1987-01-03 | 1987-01-03 | Children's addition-subtraction slide rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100045 CN87100045A (en) | 1987-01-03 | 1987-01-03 | Children's addition-subtraction slide rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87100045A true CN87100045A (en) | 1988-08-03 |
Family
ID=4812688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100045 Pending CN87100045A (en) | 1987-01-03 | 1987-01-03 | Children's addition-subtraction slide rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87100045A (en) |
-
1987
- 1987-01-03 CN CN 87100045 patent/CN87100045A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3559881A (en) | Nomogram computer | |
| CN87100045A (en) | Children's addition-subtraction slide rule | |
| CN2032343U (en) | Slide rule for children doing addition and subtraction | |
| US3688418A (en) | Manual computing device | |
| Cooke | Mathematics for primary and early years: Developing subject knowledge | |
| CN2132216Y (en) | Addition subtraction computation demonstrating rule for children | |
| CN212721217U (en) | Convex surface survey and drawing caliper | |
| CN208889109U (en) | A kind of children's addition-subtraction Rule for performing mathematical calculations | |
| US3314602A (en) | Gas mileage calculator | |
| US2547955A (en) | Vectorial and mathematical calculator | |
| US3670958A (en) | Slide rule | |
| CN2164580Y (en) | Trigonometrid function board | |
| US3540648A (en) | Slide calculator for direct addition and/or subtraction of integer qualities in two number systems | |
| CN214873846U (en) | Multifunctional drawing device for calculus | |
| CN2140082Y (en) | Mathematics count card | |
| CN201186561Y (en) | Five-functional square | |
| CN211740028U (en) | Multifunctional measuring tool for mathematics | |
| CN2268951Y (en) | Mathematic calculator for children | |
| CN210324745U (en) | Decomposition demonstration teaching aid for numbers | |
| CN2478182Y (en) | Mathematics coordinate rule | |
| CN201392531Y (en) | Calculator provided with protractor | |
| CN85202013U (en) | Counter for addition and subtraction computing | |
| US3495772A (en) | Adding and subtracting device | |
| CN1996430B (en) | Combined multifunctional mathematics teaching apparatus | |
| CN208271425U (en) | Teaching apparatus for primary school maths |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |