Three-number straight-adding and straight-subtracting abacus with three beads on each upper

An abacus and abacus technology, applied in the field of teaching aids, can solve the problems of not encouraging students to learn mathematics, complex learning, and difficulty in understanding, and achieve the effect of easy learning and mastery.

Inactive Publication Date: 2009-02-04
王金辉
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] There are so many formulas, and there are 2 to 3 situations for each addition or subtraction of a number, it is more complicated to learn and difficult to understand
This set of formulas is only applicable to the traditional abacus, and cannot be used in other places. It is easy to forget after a long time. It can only be used on the premise of memorizing the formulas. During the calculation, follow the formulas to dial the beads. The problem is that it is impossible to achieve direct addition and subtraction,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-number straight-adding and straight-subtracting abacus with three beads on each upper
  • Three-number straight-adding and straight-subtracting abacus with three beads on each upper
  • Three-number straight-adding and straight-subtracting abacus with three beads on each upper

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0067] Example 1

[0068] Such as figure 1 Shown: The upper three-type three-number direct addition and direct subtraction abacus is an improvement on the traditional abacus. The upper two upper beads of the traditional "up two under five" type abacus are turned into three upper beads (3), below Five lower beads become twelve lower beads (7), which is an abacus of "up three and lower twelve". One upper bead (3) represents 5, and one lower bead (7) represents 1. The middle four of the twelve lower beads (7) in each grade are in different colors from the upper four and the lower four; a digital card (6) is set on the frame (1); the abacus beads of each grade use different colors Represents different bits.

Example Embodiment

[0069] Example 2

[0070] Such as figure 2 Shown: The upper three-type three-number direct addition and direct subtraction abacus is to turn the twelve lower beads of the "up three lower twelve" type abacus into thirteen lower beads (7), which is "up three lower thirteen" In the abacus, the upper bead (3) represents 5, and the lower bead (7) represents 1. The middle four of the thirteen lower beads (7) in each gear are in different colors from the upper four and the lower five; a digital card (6) is set on the frame (1); the abacus beads of each grade use different colors Represents different bits.

Example Embodiment

[0071] Example 3

[0072] Such as image 3 Shown: The upper three-type three-number direct addition and direct subtraction abacus is to turn the twelve lower beads of the "up three lower twelve" type abacus into fourteen lower beads (7), which is "up three under fourteen" In the abacus, the upper bead (3) represents 5, and the lower bead (7) represents 1. The fifth and tenth of the fourteen beads (7) in each grade are heterochromatic beads (5); a digital sign (6) is set on the frame (1); the beads of each grade are represented by different colors Different bits.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an upper-three type three-number direct-adding and direct-deducting counting frame. The traditional counting frame has more calculation formulae which are complex to learn and difficult to understand; besides, the traditional counting frame can not realize direct adding or deducting and can be hardly combined with the written calculation of the modern mathematics education, so the studying function is difficult to be embodied. To solve the problems, the invention makes improvement on the traditional counting frame and provides a upper-three type three-number direct-adding and direct-deducting counting frame; the counting frame changes the two upper beads of the traditional type counting frame into three beads, and the five lower beads into twelve lower beads, and becomes a type counting frame; wherein, each upper bead stands for 5, while each lower bead stands for 1. The counting frame can further become a type or type counting frame. The counting frame needs no formula in the calculation and is easy to learn and understand; as long as the user can count and dial the numbers, the user can directly add or deduct numbers through the counting frame; the counting frame combines with the written calculation of the modern mathematics education and can have a better understanding and awareness into the concept of carry and borrow.

Description

technical field [0001] The invention relates to a teaching aid, in particular to an abacus. Background technique [0002] Abacus is a traditional Chinese calculation tool and an important invention in ancient China. The use of abacus and abacus is not only convenient for calculation, but also has the effect of exercising thinking ability. Using the abacus requires the close cooperation of the brain, eyes, and hands. Therefore, many schools and parents use the abacus to train children's thinking and calculation skills. Traditional abacus generally adopts the bead structure of "up two down five", "up two down four", "up down five" or "up down four". The calculation of this kind of abacus requires a separate set of formulas: [0003] Addition table [0004] Add one: one to one, one to five to four, one to nine to one; [0005] Add two: two to two, two to five to three, two to eight to one; [0006] Add three: three to three, three to five to two, three to seven to one; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06C1/00G09B19/02
Inventor 安正文
Owner 王金辉
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products