CN207458397U - Addition and subtraction Quick arithmetic unit - Google Patents

Abstract

The utility model proposes a kind of addition and subtraction Quick arithmetic unit, including rectangular frame；It is parallel in rectangular frame to be equipped with more crossbeams, more sliding bars are equipped with through every crossbeam is parallel, sliding bar intersects with beam vertical, and every sliding bar is separated into multistage by crossbeam, and more sliding bars are divided into 100 sections in total；There are one movable pearls for string on every section of sliding bar, string has 100 movable pearls in total, using the movable pearl in the upper left corner as initiating terminal, using the movable pearl in the lower right corner as clearing end, be from left to right corresponding in turn on each movable pearl and indicate 1~100 different number.The learner combines closely figure and counting, computing, and children is enable quickly and intuitively to carry out the signed magnitude arithmetic(al) within 100, and then promotes the coordinated development of its imaginal thinking capability and digital computation capability, has the function that develop its mathematics intelligence.

Description

Addition and subtraction Quick arithmetic unit

Technical field

The utility model is related to teaching aid technical field more particularly to a kind of apparatus for being suitable for children for learning computing.

Background technology

At present, well known children's addition-subtraction calligraphy learning auxiliary appliance mainly has toy abacus, addition table, counter, addition Card or learning board, teaching stick etc. are practised, in addition with some toy-types, interest type addition and subtraction aided education equipment.For children, The important point of study addition and subtraction is experience process, understands and calculate reason, form thought, and then develops the mathematics intelligence of children.Above In cited a variety of addition-subtraction learning equipment, though what is had has process, lacking and calculate reason, then process, calculation reason all lack some, because And it is little to the psychological help of children for learning addition and subtraction, the effect of exploitation children mathmatics intelligence can not be played.

Find that on June 26th, 2013, the CN203025995U utility model patents of Granted publication disclosed one by retrieval Kind children's addition-subtraction method visual learning device, including rectangular base plate with groove, hard steel bar, bead with holes；Rectangular base with groove The groove surface of plate is printed on dashed circle pattern；String has one to ten bead with holes respectively on ten hard steel bars, and sequentially fixes On the flange of rectangular base plate with groove；Bead with holes and dashed circle pattern column alignment and each column bead with holes and circle of dotted line Shape pattern number and for ten.The learner combines closely figure and counting, computing, has effectively facilitated children image thinking ability With the coordinated development of digital computation capability；But due to its structure design, cause the learner that can only be transported to number within ten It calculates, so as to limit its scope of application.

The content of the invention

The defects of existing children's addition-subtraction calligraphy learning equipment function is single, poor intuition to overcome, using effect unobvious, this Utility model proposes a kind of apparatus for being suitable for children for learning computing.

For this purpose, the technical solution of the utility model is：Addition and subtraction Quick arithmetic unit, including rectangular frame, it is characterised in that： It is parallel in rectangular frame to be equipped with more crossbeams, it is equipped with more sliding bars, sliding bar and beam vertical through every crossbeam is parallel Intersecting, every sliding bar is separated into multistage by crossbeam, and more sliding bars are divided into 100 sections in total；It is gone here and there on every section of sliding bar There are one movable pearls, and go here and there has 100 movable pearls in total, using the movable pearl in the upper left corner as initiating terminal, with the work in the lower right corner Dynamic pearl is clearing end, is from left to right corresponding in turn on each movable pearl and indicates 1~100 different number.

Advantageous effect：

The utility model sets on each movable pearl and is counted with it by setting 100 movable pearls in frame The corresponding number in position divides result of calculation to carry out computing using the method for numerical digit+number, children is made to be formed to one using digital addition and subtraction Digital visual in image understanding within hundred；Pair plus, subtraction " gather hundred ", " tearing hundred open " for calculating in reason form perceptual knowledge, and to this It gathers and tears open to form figure memory, raising adds, the efficiency of subtraction study；And enable children using graphics thinking expertly to 100 Within number split, enhance its computing capability；Further, since this teaching aid is close by figure and counting, computing in design With reference to, therefore children not only improve during playing and cultivate its number sense, and be conducive to the development of its ability of mental arithmetic, and then promote Into the coordinated development of its imaginal thinking capability and digital computation capability, have the function that develop its mathematics intelligence.

Description of the drawings

Fig. 1 is the front view of the utility model；

Figure label is：1st, rectangular frame；2nd, crossbeam；3rd, sliding bar；4th, movable pearl.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail.

As shown in Figure 1, a kind of addition and subtraction Quick arithmetic unit, including rectangular frame 1；It is parallel in rectangular frame 1 to be fixed with Three crossbeams 2 are equipped with 25 sliding bars 3 through every crossbeam is parallel, and sliding bar 3 intersects vertically with horizontal 2 beams, every slip Bar 3 is separated into four sections by three crossbeams, and 25 sliding bars are divided into 100 sections in total（The quantity of sliding bar and crossbeam can It is converted according to actual conditions）；The movable pearl 4 there are one strings on every section of sliding bar, go here and there to have 100 movable pearls in total, Using the movable pearl in the upper left corner as initiating terminal, using the movable pearl in the lower right corner as clearing end, from left to right in each movable pearl 4 On be corresponding in turn to and indicate 1~100 different number.

In actual use, computing can be carried out in following manner：

1）, add operation:

Example：2+3=5 first push to pearl 2 during computing, then push to three pearls successively to the right, last Pearl is exactly result 5；Example：11+21=32 first push to pearl 11 during computing, then push to 21 pearls successively to the right As a result son is exactly 32.

2）Subtraction：

Example：7-3=4 first push to pearl 7 during computing, then push to three pearls successively to the left side, last Pearl is exactly result 4；Example：40-20=20 first push to pearl 40 during computing, then push to 20 pearls successively to the left side As a result son is exactly 20.

3）, decomposition operation：

Example：10-（）=7, first pearl 10 is pushed to during computing, then pearl 7 is also pushed to, just formation between two pearls Distance, then numerical digit is as a result exactly 3 to pearl 7 since pearl 9；Example：（）- 2=8, first pearl 2 is pushed to during computing, Then several 8 pearls to the right, are as a result exactly 10；Example：100-（）=7, first pearl 100 is pushed to during computing, then pearl 7 It pushes to, distance is formed between two pearls, then numerical digit is as a result exactly 93 to pearl 7 since pearl 99.

The utility model sets on each movable pearl and is counted with it by setting 100 movable pearls in frame The corresponding number in position makes children be formed to digital visual in image understanding within 100；Pair plus, subtraction calculate " gather hundred " in reason, " tearing hundred open " forms perceptual knowledge, and gathers and tear open to form figure memory to this, and raising adds, the efficiency of subtraction study；And make children Expertly the number within 100 can be split using graphics thinking, enhance its computing capability；Further, since this teaching aid exists Figure and counting, computing are combined closely in design, therefore children not only improve during playing and cultivate its number sense, and have Beneficial to the development of its ability of mental arithmetic, and then promote the coordinated development of its imaginal thinking capability and digital computation capability, reach exploitation The effect of its mathematics intelligence.

The foregoing is merely the preferable possible embodiments of the utility model, not limiting to the patent model of the utility model Enclose, therefore all equivalent transformations made with the utility model description, be similarly included in the scope of the utility model it It is interior.

Claims (1)

1. addition and subtraction Quick arithmetic unit, including rectangular frame, it is characterised in that：It is parallel in rectangular frame to be equipped with more crossbeams, More sliding bars are equipped with through every crossbeam is parallel, sliding bar intersects with beam vertical, and every sliding bar is separated into more by crossbeam Section, more sliding bars are divided into 100 sections in total；String goes here and there to have 100 in total there are one movable pearl on every section of sliding bar Movable pearl, using the movable pearl in the upper left corner as initiating terminal, using the movable pearl in the lower right corner as clearing end, from left to right each It is corresponding in turn on movable pearl and indicates 1~100 different number.