CN2241367Y - Multiplication table rotary disc - Google Patents

Abstract

The utility model relates to a multiplication table rotary disc which is composed of a big rotary disc, a middle rotary disc, a small rotary disc and a center shaft. The big rotary disc, the middle rotary disc and the small rotary disc are arranged on the central shaft concentrically, wherein, the big rotary disc is provided with multiplicands and products, which are distributed and marked in a rule; the middle rotary disc is provided with multipliers and hollow fan-shaped lattices, which distributed and arranged in a rule, and moreover, the small rotary disc is provided with fan-shaped gaps. When the utility model is used, a multiplicand and a multiplier in the same color are aligned, the fan-shaped gaps are aligned to the multiplicand and the multiplier, at the moment, a number displayed by the hollow fan-shaped lattices and the fan-shaped gaps is a product. Thus, the product of the multiplication of two numbers can be magically obtained by the operation and displayed. A pupil can develop an interest in learning.

Description

The multiplication rotating disk

The utility model relates to the utensil that a kind of pupil learns multiplication.

Primary school one, the sophomoric student study multiplication that is about to begin, the teacher mainly is to allow the student learn to recite multiplication table in the teaching method in this stage, should admit that this pedagogical effect of always continuing to use is good, but students reflects that generally this learning method is uninteresting, tasteless, lacks interest.

The purpose of this utility model provides and a kind ofly can improve the learning equipment that the pupil learns multiplication interest.

This learning equipment is called the multiplication rotating disk, by traffic cycle, turntable, mini-roundabout and central shaft are formed, and traffic cycle, turntable and mini-roundabout are installed on the central shaft from bottom to top with one heart, traffic cycle and turntable are divided into ten eight equal parts by radial line respectively, and be divided into seven layers and six layers of concentric ring by concentric circles respectively, and from inside to outside ground floor is overlapping to the layer 6 concentric ring with from inside to outside ground floor on the traffic cycle respectively to the layer 6 concentric ring on the turntable, every layer of concentric ring on traffic cycle and the turntable then forms the fan-shaped lattice of 18 lattice, indicate two on the traffic cycle layer 7 concentric ring in every adjacent fan-shaped lattice of two lattice numeral is identical but color is respectively red and black multiplicand, and the color of adjacent two different multiplicands is different, the numeral of multiplicand is 1 successively, 2,3,4,5,6,7,8,9, traffic cycle ground floor to the fan-shaped case marker on the layer 5 concentric ring has the product number, wherein the color with pairing multiplicand is identical respectively for the color of two row product numbers of same two identical multiplicand correspondences, and the product number with multiplicand red 1 and black 1 correspondence is respectively 1,3,5,7,9 and 2,4,6,8, product number with multiplicand red 2 and black 2 correspondences is respectively 2,6,10,14,18 and 4,8,12,16, product number with multiplicand red 3 and black 3 correspondences is respectively 3,9,15,21,27 and 6,12,18,24, product number with multiplicand red 4 and black 4 correspondences is respectively 4,12,20,28,36 and 8,16,24,32, product number with multiplicand red 5 and black 5 correspondences is respectively 5,15,25,35,45 and 10,20,30,40, two row product numbers with multiplicand red 6 and black 6 correspondences are respectively 6,18,30,42,54 and 12,24,36,48, product number with multiplicand red 7 and black 7 correspondences is respectively 7,21,35,49,63 and 14,28,42,56, product number with multiplicand red 8 and black 8 correspondences is respectively 8,24,40,56,72 and 16,32,48,64, product number with multiplicand red 9 and black 9 correspondences is respectively 9,27,45,63,81 and 18,36,54,72, indicate a multiplier in the fan-shaped lattice of every lattice on the turntable layer 6 concentric ring, numeral is 1 successively, 2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9, wherein odd number is red, even number is a black, the turntable ground floor is equipped with hollow fan-shaped lattice to the layer 5 concentric ring, corresponding multiplier 1 on the ground floor concentric ring wherein, 2 fan-shaped lattice are hollow lattice, corresponding multiplier 3 on the second layer concentric ring, 4 fan-shaped lattice are hollow lattice, corresponding multiplier 5 on the 3rd layer of concentric ring, 6 fan-shaped lattice are hollow lattice, corresponding multiplier 7 on the 4th layer of concentric ring, 8 fan-shaped lattice are hollow lattice, the fan-shaped lattice of corresponding multiplier 9 are hollow lattice on the layer 5 concentric ring, the external diameter of mini-roundabout equates with the external diameter of turntable layer 5 concentric ring, it is 20 ° sector notch that mini-roundabout is provided with central angle, and the footpath, the end of this sector notch equates with the internal diameter of turntable ground floor concentric ring.

Illustrate particular content of the present utility model below in conjunction with drawings and Examples.

Fig. 1: structural drawing of the present utility model;

The vertical view of Fig. 2: Fig. 1;

Fig. 3: the upper surface figure of traffic cycle;

Fig. 4: the plan structure figure of turntable.

As shown in the figure, multiplication rotating disk described in the utility model is by traffic cycle (1), turntable (2), mini-roundabout (3) and central shaft (4) are formed, and traffic cycle (1), turntable (2) and mini-roundabout (3) are installed on the central shaft (4) from bottom to top with one heart, traffic cycle (1) and turntable (2) are respectively by radial line (5,6) be divided into ten eight equal parts, and respectively by concentric circles (7,8) be divided into seven layers and six layers of concentric ring (9,10), and from inside to outside ground floor from inside to outside ground floor to the same respectively traffic cycle of layer 6 concentric ring (10) (1) is overlapping to layer 6 concentric ring (9) on the turntable (2), and every layer of concentric ring on traffic cycle (1) and the turntable (2) (9,10) then form the fan-shaped lattice (11 of 18 lattice, 12), traffic cycle (1) layer 7 concentric ring (9) is gone up and to be indicated two in every adjacent fan-shaped lattice of two lattice (11) numeral is identical but color is respectively red and black multiplicand, and the color of adjacent two different multiplicands is different, the numeral of multiplicand is 1 successively, 2,3,4,5,6,7,8,9, traffic cycle (1) ground floor to the fan-shaped lattice (11) on the layer 5 concentric ring (9) indicate the product number, wherein the color with pairing multiplicand is identical respectively for the color of two row product numbers of same two identical multiplicand correspondences, and the product number with multiplicand red 1 and black 1 correspondence is respectively 1,3,5,7,9 and 2,4,6,8, product number with multiplicand red 2 and black 2 correspondences is respectively 2,6,10,14,18 and 4,8,12,16, product number with multiplicand red 3 and black 3 correspondences is respectively 3,9,15,21,27 and 6,12,18,24, product number with multiplicand red 4 and black 4 correspondences is respectively 4,12,20,28,36 and 8,16,24,32, product number with multiplicand red 5 and black 5 correspondences is respectively 5,15,25,35,45 and 10,20,30,40, two row product numbers with multiplicand red 6 and black 6 correspondences are respectively 6,18,30,42,54 and 12,24,36,48, product number with multiplicand red 7 and black 7 correspondences is respectively 7,21,35,49,63 and 14,28,42,56, product number with multiplicand red 8 and black 8 correspondences is respectively 8,24,40,56,72 and 16,32,48,64, product number with multiplicand red 9 and black 9 correspondences is respectively 9,27,45,63,81 and 18,36,54,72, indicate a multiplier in the fan-shaped lattice of every lattice (12) on turntable (2) the layer 6 concentric ring (10), numeral is 1 successively, 2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9, wherein odd number is red, even number is a black, turntable (2) ground floor is equipped with hollow fan-shaped lattice (12) to layer 5 concentric ring (10), wherein ground floor concentric ring (10) is gone up corresponding multiplier 1,2 fan-shaped lattice (12) are hollow lattice, second layer concentric ring (10) is gone up corresponding multiplier 3,4 fan-shaped lattice (12) are hollow lattice, the 3rd layer of concentric ring (10) gone up corresponding multiplier 5,6 fan-shaped lattice (12) are hollow lattice, the 4th layer of concentric ring (10) gone up corresponding multiplier 7,8 fan-shaped lattice (12) are hollow lattice, the fan-shaped lattice (12) that layer 5 concentric ring (10) is gone up corresponding multiplier 9 are hollow lattice, the external diameter of the same turntable of external diameter (2) the layer 5 concentric ring (10) of mini-roundabout (3) equates, it is 20 ° sector notch (13) that mini-roundabout (3) is provided with central angle, and the internal diameter of end footpath same turntable (2) the ground floor concentric ring (10) of this sector notch (13) equates.Adopt red, black two kinds of colors to indicate to multiplicand, multiplier and product number above, in fact so long as two kinds of different marking modes get final product, for example, adopt solid line and dotted line reference numerals, or two kinds of different font reference numerals or two kinds of font reference numerals that vary in size or the like.Above-mentioned traffic cycle (1), turntable (2) mini-roundabout (3) adopt paper board material or plastics book sheet to make, after the same rotating disk of central shaft (4) (1,2, the 3) assembling, two axial ends will form shoulder block, in case three rotating disks (1,2,3) are deviate from, adopt the spring button to make central shaft (4) in the present embodiment, the central shaft (4) that forms the mounting or dismounting structure also is feasible.

Multiplicand that traffic cycle is identical with color on the turntable and multiplier alignment, rotate mini-roundabout then, make sector notch aim at multiplicand and multiplier, so, the product numeral that shows by hollow fan-shaped lattice and sector notch promptly is the product of this multiplicand with multiplier, and obviously, the pupil draws the products that two numbers multiply each other after by aforesaid operations magically, can produce learning interest, and improve learning efficiency multiplication.

Claims (1)

1, a kind of multiplication rotating disk, it is characterized in that: by traffic cycle (1), turntable (2), mini-roundabout (3) and central shaft (4) are formed, and traffic cycle (1), turntable (2) and mini-roundabout (3) are installed on the central shaft (4) from bottom to top with one heart, traffic cycle (1) and turntable (2) are respectively by radial line (5,6) be divided into ten eight equal parts, and respectively by concentric circles (7,8) be divided into seven layers and six layers of concentric ring (9,10), and from inside to outside ground floor from inside to outside ground floor to the same respectively traffic cycle of layer 6 concentric ring (10) (1) is overlapping to layer 6 concentric ring (9) on the turntable (2), and every layer of concentric ring on traffic cycle (1) and the turntable (2) (9,10) then form the fan-shaped lattice (11 of 18 lattice, 12), traffic cycle (1) layer 7 concentric ring (9) is gone up and to be indicated two in every adjacent fan-shaped lattice of two lattice (11) numeral is identical but color is respectively red and black multiplicand, and the color of adjacent two different multiplicands is different, the numeral of multiplicand is 1 successively, 2,3,4,5,6,7,8,9, traffic cycle (1) ground floor to the fan-shaped lattice (11) on the layer 5 concentric ring (9) indicate the product number, wherein the color with pairing multiplicand is identical respectively for the color of two row product numbers of same two identical multiplicand correspondences, and the product number with multiplicand red 1 and black 1 correspondence is respectively 1,3,5,7,9 and 2,4,6,8, product number with multiplicand red 2 and black 2 correspondences is respectively 2,6,10,14,18 and 4,8,12,16, product number with multiplicand red 3 and black 3 correspondences is respectively 3,9,15,21,27 and 6,12,18,24, product number with multiplicand red 4 and black 4 correspondences is respectively 4,12,20,28,36 and 8,16,24,32, product number with multiplicand red 5 and black 5 correspondences is respectively 5,15,25,85,45 and 10,20,30,40, two row product numbers with multiplicand red 6 and black 6 correspondences are respectively 6,18,30,42,54 and 12,24,36,48, product number with multiplicand red 7 and black 7 correspondences is respectively 7,21,35,49,63 and 14,28,42,56, product number with multiplicand red 8 and black 8 correspondences is respectively 8,24,40,56,72 and 16,32,48,64, product number with multiplicand red 9 and black 9 correspondences is respectively 9,27,45,63,81 and 18,36,54,72, indicate a multiplier in the fan-shaped lattice of every lattice (12) on turntable (2) the layer 6 concentric ring (10), numeral is 1 successively, 2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9, wherein odd number is red, even number is a black, turntable (2) ground floor is equipped with hollow fan-shaped lattice (12) to layer 5 concentric ring (10), wherein ground floor concentric ring (10) is gone up corresponding multiplier 1,2 fan-shaped lattice (12) are hollow lattice, second layer concentric ring (10) is gone up corresponding multiplier 3,4 fan-shaped lattice (12) are hollow lattice, the 3rd layer of concentric ring (10) gone up corresponding multiplier 5,6 fan-shaped lattice (12) are hollow lattice, the 4th layer of concentric ring (10) gone up corresponding multiplier 7,8 fan-shaped lattice (12) are hollow lattice, the fan-shaped lattice (12) that layer 5 concentric ring (10) is gone up corresponding multiplier 9 are hollow lattice, the external diameter of the same turntable of external diameter (2) the layer 5 concentric ring (10) of mini-roundabout (3) equates, it is 20 ° sector notch (13) that mini-roundabout (3) is provided with central angle, and the internal diameter of end footpath same turntable (2) the ground floor concentric ring (10) of this sector notch (13) equates.

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