CN201000587Y

CN201000587Y - Ten-beads ladder abacus

Info

Publication number: CN201000587Y
Application number: CNU2006200108055U
Authority: CN
Inventors: 王成功
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-16
Filing date: 2006-10-16
Publication date: 2008-01-02
Anticipated expiration: 2016-10-16

Abstract

The utility model relates to a ten beads step abacus, which is characterized in ''dual face, correspondence, and ten-bead type''. A ''beam'' is replaced by the entire ''two-color'' of the bead, and the ''two-color'' divides the beads into upper and lower two major parts; the quantities of the beads with same color upside and downside each step are orderly increased or decreased by degrees. The steps are divided into eleven steps in order to be capable of each corresponding to the numbers from zero to ten; and each step is provided with ten beads, each bead represents the number code ''1''. The abacus is exclusively developed for the child begins to learn the math, and the abacus is convenient for surveyably, happily and quickly learning the numbers from zero to ten, and the disassembling and composition and the plus and minus of the numbers within ten; the learning and the plus and minus of the numbers within ten are the fundamental base of math.

Description

Ten pearl ladder abacuses

Technical field the utility model relates to the happy abacus of knowing number apace of a kind of child of being convenient to.

The last pearl of background technology tradition abacus " generation five (every pearl is represented numeral 5) ", beyond affordability for the child of first knowledge number.In order to overcome deficiency like this, I have developed and have been easy to the ten pearl ladder abacuses that child knows number, calculating.

The summary of the invention technical problem to be solved in the utility model provide a kind of simple, be convenient to child's abacus of immunologing mathematics just.

This abacus is made of frame, shelves, pearl, and the moulded congruent right-angle triangles that are two oblique correspondences in the positive back side.Shelves are provided with 11 shelves altogether for can be corresponding one by one with numeral " 0～10 " or " 10～0 ".Every grade all ten of beads are all represented digital " 1 " for every, and each grade bead removing from beginning to end is two kinds of colors, and the upper and lower homochromy pearl number of each grade increasing or decreasing successively; The integral body of bead " double-colored " has constituted two tiltedly corresponding congruent right-angle triangles one on the other.

The structure of this abacus front and back is identical, and the two sides can both be used; But the initial orientation at the positive back side is different when using, and the front is bottom right or upper left initial, and the back side is lower-left or upper right initial.

The beneficial effects of the utility model are: one is simple in structure, is easy to make, and only needs to transform slightly on the basis of traditional abacus to get final product; Its two novel and beautiful, moulded is two tiltedly corresponding congruent right-angle triangles, and frame, pearl is distinguished with matching three kinds of harmonious colors up and down; It three is convenient to operation, can allow the child that begins to learn be familiar with " coming into plain view " " 0～10 " numeral, carry out ten with interior plus and minus calculation.

Description of drawings Fig. 1 is the Facad structure synoptic diagram, and Fig. 4 is the structure synoptic diagram, and Fig. 2 and Fig. 3 are the following illustration of implementation method, and Fig. 5 and Fig. 6 are the back side illustration of implementation method.On the figure 1 is that frame, 2 is that shelves, 3 are pearl under last pearl, 4 is.

When using, embodiment at first liquidates (the liquidation back is as Fig. 1 and Fig. 4) general four classes of dividing of operation.(1) understanding numeral " 0～10 " (can mate corresponding number card).Upper and lower pearl should got in touch and carried out.Earlier by the order understanding of " 0～10 ", after upset number sequence again and consolidate, deepen.The example of the understanding of single number " 3 ": find out the shelves (up and down each) of monochromatic three pearls earlier, corresponding with digital " 3 " again understanding.(2) decomposition and the composition of numeral " 2～9 ": upper and lowerly can both utilize (under Fig. 2 " 6 " for example) with beads; Make an accurate selection of down " 6 " shelves pearl earlier, then the last pearl of all grades on the right is set aside (except 0 grade), make it and all be " 6 " (as Fig. 2).Its example is if use the back side, result such as Fig. 5.The decomposition of " 10 " and composition: with the double-colored pearl number of shelves " with " be " 10 ".(3) 10 with interior plus-minus.Addition: can select digital big shelves pearl (many with pearl) down earlier, and then add decimal sign indicating number pearl (as " 6+2=8 ", its " summand, addend and " is as Fig. 3).Subtraction: select the shelves pearl (pearl under use) of minuend earlier more, and then computing (as " 8-2=6 ", its " minuend, subtrahend, poor " is as Fig. 6).The understanding of number and plus-minus in (four) 100 (it is following to allow bead all lean on), main utilization is carried out for right two grades, but must religion forward and back position (example slightly).

Operation key issue " one two three ": " one successively " is the thing amount (pearl number) of being familiar with earlier, back its numeral of understanding; " two correspondences " counts corresponding, top and following corresponding (all there are identical pearl number in top and bottom) for numeral and pearl; " three elements " are shelves, pearl (pearl up and down), number (numeral), and will make good use of three's inner link all the time.

Claims

1. a pearl ladder abacus is made of shelves, pearl, frame, it is characterized in that: described shelves (2) are established 11 grades (2) altogether in order to adapt with last pearl (3), the number " 0～10 " of following pearl (4) or the arrangement of " 10～0 "; Every grade of (2) all ten of described pearl (3,4), and the quantity of last pearl (3) of each grade (2) and following pearl (4) increases progressively " 0～10 " or successively decrease " 10～0 " successively.

2. ten pearl ladder abacuses according to claim 1, its pearl is characterised in that: each grade (2) bead (3,4) except that head and the tail is divided into upper and lower two large divisions; The last pearl (3) of each grade (2), following the increasing progressively successively of quantity " 0～10 " of pearl (4), promptly initial shelves (2) be that " 0 ", second grade (2) they are " 2 " for " 1 ", third gear (2) to its pearl (3,4) number from a left side or from the right side ... the 11 grade (2) are " 10 "; Successively decrease successively " 10～0 " of the quantity of the last pearl (3) of each grade (2), following pearl (4), promptly initial shelves (2) are that " 10 ", second grade (2) they are " 8 " for " 9 ", third gear (2) to its pearl (3,4) number from a left side or from the right side ... the 11 grade (2) are " 0 ".