CN201035444Y

CN201035444Y - Nine bead abacus

Info

Publication number: CN201035444Y
Application number: CNU2007200113819U
Authority: CN
Inventors: 王汉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-29
Filing date: 2007-03-29
Publication date: 2008-03-12
Anticipated expiration: 2017-03-29

Abstract

The utility model provides a nine-bead abacus used for calculation, teaching and intelligence development. The abacus frame is provided with a plurality of bead shafts, each of which penetrates nine medium beads, and a bead shaft on the upper side of the medium beads penetrates more than four beads while the lower side of the medium beads penetrates less than four beads, and the beads on the upper and the lower sides of the medium beads are distinguished by the colors. The abacus frame of bead shafts has corresponding positioning points on the upper and the lower sides. Nine beads are arranged on each bead shaft of each calculation position. Because the different color of the beads on the upper and the lower sides of the medium beads, the nine-bead abacus of the utility model, the nine-bead abacus of the utility model can conveniently and intuitively fulfill the adding and the reducing, and the counting, and then is helpful for the math and the calculation improvement; the utility model is suitable to be used as a teaching instrument, a learning instrument or a play toy.

Description

Abacus of nine-bead on one shaft

Technical field

The utility model provides that the stationery field is used to calculate and the Abacus of nine-bead on one shaft of teaching and intelligence development.

Background technology

Before the utility model proposes, abacus is divided into two lattice up and down, and last lattice have 1 or 2 pearls, and following lattice have 4 pearls.Each pearl of last lattice is represented natural number 5, and each pearl of following lattice is represented natural number 1.Can carry out the addition subtraction multiplication and division computing by pearl location status of lattice and following lattice on abacus.

For student who begins to learn arithmetic, counting or children, existing abacus is difficult to grasp, and obscures easily.So it is clear to utilize existing abacus teaching not reach.Understandable effect.

Summary of the invention

Be difficult to the shortcoming of imparting knowledge to students and learning in order to overcome existing abacus, the utility model provides a kind of Abacus of nine-bead on one shaft.This abacus is realized the effect of arithmetic, counting by changing the state of bead on abacus.

The scheme that the utility model technical solution problem is taked is: be provided with a plurality of bead axles on the abacus frame of anchor point having, on each bead axle, be coated with bead, it is characterized in that: on each bead axle, be coated with nine beads, on the bead axle above the middle bead, be coated with bead on four, below middle bead, be coated with four following beads.

Good effect is: owing to be set with nine bead pearls on the bead axle of each calculation position of the utility model Abacus of nine-bead on one shaft, and the 5th bead and other four bead colouring discriminations settings up and down, so can carry out plus and minus calculation, counting easily and intuitively, help improving teaching and study arithmetic.Suitable to teaching aid or schooling apparatus and toy use.

Description of drawings

Fig. 1 is the utility model structural drawing

Among Fig. 1,1. abacus frame, 2. bead axle, 3. bead, bead among the 3.1., the last bead of 3.2., bead under the 3.3., anchor point 4.

Embodiment

According to shown in Figure 1, on abacus frame 1, be provided with a plurality of bead axles 2 with anchor point 4, on each bead axle, be coated with nine beads 3, on the bead axle above the middle bead 3.1, be coated with bead 3.2 on four, below middle bead, be coated with four following beads 3.3.Middle bead and upper and lower bead colouring discrimination are provided with.

One, purposes of the present utility model

1, counting

Bead is counting by upper ledge.A following pearl represents 1, and dialling in a following pearl is exactly that abacus has write down 1 by upper ledge, dials two following pearls by upper ledge, and abacus has just write down 2 ...

Because bead is more, dialled 5 o'clock, directly up dial from " bead "; Dialled 6 o'clock, can " middle bead " following Rhizoma Trillii Tschonoskii begin one and up dial; Dialled 7 o'clock, and can up dial by two following pearls of " middle bead " ...

If count from left to right, first anchor point is represented a position, then represents ten for first of its front grade, represents hundred for second grade, and third gear just the 3rd anchor point is represented kilobit ... first grade of expression tenths of its back, second grade of expression hundredths.When for example dialling " 12 ", can locate last shelves at first and dial in Rhizoma Trillii Tschonoskii, coach two pearls simultaneously in the location by upper ledge by upper ledge.

2, count number

It is several 1 to dial in following strain at anchor point, and it is several 2 to dial in following strain again, dial in a following strain again and count 3......, several 10 at present pearl do not had, just dial and go 9, dial in Rhizoma Trillii Tschonoskii at last shelves and represent 10.

3, calculate

(1) addition is seen down pearl, enough adds directly to add, and adds inadequately to cover 1.

For example: 3+4, dial last three following pearls earlier, dial four following pearls again, 7 pearls are represented 3+4=7 by upper ledge as a result; 7+8 dials earlier last seven following pearls by upper ledge, and it is just not much of that to add 8 times pearls, dials from last pearl and goes 8 complement 2 (forming two phases of 10 complement each other) to dial to last shelves and go up Rhizoma Trillii Tschonoskii, and the result is 15.

(2) subtraction is taken a fancy to pearl, and enough subtracting directly subtracts, and subtracts inadequately from last shelves and moves back 1, and these shelves add benefit.

For example: 9-6, dial earlier upward 9, take a fancy to pearl and enough subtract 6, directly group go 6, the result is 3; 14-5 dials earlier and goes up " 14 ", and taking a fancy to pearl is that 4 pearls subtract 5 inadequately, just dials from last shelves and goes to go up a pearl, adds that from this grade 5 complement (dialling last five following pearls by upper ledge) result is 9.

(3) abacus mental calculation (carrying out mental arithmetic) by rechoning by the abacus

By single grade of white silk, practice totally, strengthen the rechoning by the abacus exercise and increase impression.5+3 for example, single grade of white silk carries out the exercise of 5+3 repeatedly on shelves.Trained totally is to practise totally on each overall shelves.

Dial one and imitatively dial one and think group that carrying out the transition to does not at last calculate on an abacus directly carries out mental arithmetic by real.Real dialling is exactly actually to dial pearl with hand and calculate, and imitative dialling is exactly to copy to dial the pearl action and directly do not dial pearl and dial empty exercise, and wanting to dial is exactly to want that with brain the action of dialling pearl carries out the brain calculation.

According to above purposes, Abacus of nine-bead on one shaft can be used as teaching aid and schooling apparatus, and big abacus is a teaching aid, and selfish calculations are learning aid.

(4) Qi Zhi education

Both hands are dialled pearl, and the simultaneously left brain and the right brain of exploit person reach the purpose of skillful with one's hands soul, improve one's memory, be toy be again teaching aid.

Two, using method

1, liquidation: bead is all by lower frame.Liquidation earlier before using.

2, dialling bead on leans on upper ledge (being called for short " go up and dial ") for adding.

3, set aside bead from upper ledge (be called for short " setting aside ") for subtracting.

4, counting: middle bead up is 5, and middle bead many 1 is 6, and many 2 is 7, and many 3 is 8, and many 4 is 9.

Three, characteristics

1, be different from one, lower four five-bead abacus, five-bead abacus carries out full slender acanthopanax, and is broken Five most of students when subtracting are not easy to understand and grasp, and particularly carry out " the add with carry fifth day of the first lunar month " When " giving up the throne and filling it up with 5 ", the student more is not easy to grasp, and Abacus of nine-bead on one shaft then can be separated This difficult problem of determining.

2, it is different from " counter ", and counter is to turn over from behind pearl forward, and is very numb Tired, when particularly carrying out additional calculation, can not find out enough to add not enough to add.

3, the middle bead of Abacus of nine-bead on one shaft is conveniently directly found out in the difference of other bead color 5 or than 5 big number is several, be convenient to counting, be convenient to dial pearl, need not look into one by one number.

Claims

1. Abacus of nine-bead on one shaft, on the abacus frame with anchor point (4) (1), be provided with a plurality of bead axles (2), on each bead axle, be coated with bead (3), it is characterized in that: on each bead axle, be coated with nine beads, on the bead axle of middle bead (3.1) top, be coated with four and go up bead (3.2), below middle bead, be coated with four following beads (3.3).

2. abacus according to claim 1 is characterized in that: middle bead and upper and lower bead colouring discrimination are provided with.