CN215068822U

CN215068822U - Cuboid volume calculation teaching aid for primary school mathematics teaching

Info

Publication number: CN215068822U
Application number: CN202121538798.7U
Authority: CN
Inventors: 斯日古令
Original assignee: Si Riguling
Current assignee: Si Riguling
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-07
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a cuboid volume calculation teaching aid for primary school's mathematical education, which comprises a base, the spacing frame of having arranged of upside rectangular array on chassis, the upper end four corners of spacing frame all sets up to the fillet, movable mounting has the volume calculation subassembly on the spacing frame, the upper end internalization alternate on chassis has group's frame, the volume calculation subassembly is including counting the piece, interpolation post, base block and stopper, the lower extreme of base block is fixed with the spacing piece. Has the advantages that: this device can simulate the relation of cuboid and square at first to can let the student oneself hand operation, the volume of cuboid is controlled to the number of piles, line number and the column number through controlling the little square, and can count out the number that forms the little square of this cuboid, with this volume that can make the student know why the cuboid calculates according to the formula, and can make the little square that is not used for forming the cuboid remain stable, can not scatter at will, conveniently resets after using.

Description

Cuboid volume calculation teaching aid for primary school mathematics teaching

Technical Field

The utility model belongs to teaching aid field for the teaching specifically is a cuboid volume calculation teaching aid for primary school's mathematical education is related to.

Background

The teaching aid is a model, a real object, a specimen, an instrument, a chart, a slide projector and the like for explaining something, and also comprises teaching equipment, a teaching instrument, practical training equipment, education equipment, experimental equipment, a teaching specimen, a teaching model and the like. The students are placed in the main positions, the processes and inducements of the thinking elicitations of the students are grasped, wide thinking space and intelligence background are created, demonstration, operation and test opportunities are provided for the students as much as possible, the multidirectional thinking ability and the reverse thinking ability of the students are cultured, and the thinking ability and the creating ability of the students are developed greatly.

The calculation of the cuboids is the content that students need to learn in primary schools, and the conventional teaching method is that a teacher lets the students remember a hard-back calculation formula and then uses the calculation formula for calculation, so that the students cannot fully feel and know the cuboid volume in autonomous activities and interesting games, and the initiative learning enthusiasm of the students is low and the learning efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cuboid volume calculation teaching aid for primary school's mathematical education just lies in solving above-mentioned problem.

In order to achieve the technical purpose, the utility model provides a following technical scheme:

the utility model provides a pair of cuboid volume calculation teaching aid for primary school's mathematical education, including the chassis, the spacing frame of upside rectangular array arrangement on chassis, the upper end four corners of spacing frame all sets up to the fillet, movable mounting has the volume calculation subassembly on the spacing frame, the upper end internalization alternate on chassis has group's frame.

Preferably, the volume calculating component comprises counting blocks, inserted columns, base blocks and limiting blocks, the limiting blocks are fixed at the lower ends of the base blocks, the limiting blocks are movably inserted between four adjacent limiting frames, the base blocks are arranged above the limiting frames in a rectangular array mode, a vertical row of counting blocks are placed above each base block, inner insertion grooves are formed in the centers of the upper sides of the base blocks and the upper sides of the counting blocks, the inserted columns are fixed at the centers of the lower sides of the counting blocks, and the inserted columns are movably inserted into the counting blocks below or the inner insertion grooves in the base blocks.

Preferably, the volume of the counter block is equal to the volume of the base block and is a cube.

Preferably, the counter blocks and the base blocks are both magnet blocks, and the two adjacent base blocks and the two adjacent counter blocks are magnetically attracted to each other.

Preferably, the corners of the four adjacent counting blocks, which are close to each other, are provided with arc grooves, and the radius of each arc groove is larger than that of one end of the poking frame, which is positioned in the chassis.

Preferably, the outer cover is movably sleeved outside the upper end of the chassis.

Preferably, magnet rings are inserted into the lower end of the outer cover and the upper side of the chassis, and the two magnet rings are mutually attracted in a magnetic manner.

Preferably, a resisting plate is fixed on the upper side of the chassis and is positioned in the outer cover.

Preferably, a calculating plate is movably inserted in the lower end of the chassis.

Has the advantages that: this device can simulate the relation of cuboid and square at first to can let the student oneself hand operation, the volume of cuboid is controlled to the number of piles, line number and the column number through controlling the little square, and can count out the number that forms the little square of this cuboid, with this volume that can make the student know why the cuboid calculates according to the formula, and can make the little square that is not used for forming the cuboid remain stable, can not scatter at will, conveniently resets after using.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a partially enlarged structural view of the part B of fig. 3.

The reference numerals are explained below:

1. an outer cover; 2. a chassis; 3. a magnetic ring; 4. a limiting frame; 5. a computing board; 6. pulling the frame; 7. a volume calculation component; 71. a counting block; 72. inserting a column; 73. a base block; 74. a limiting block; 8. and a support plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1-4, the utility model provides a cuboid volume calculates teaching aid for primary school's mathematical education, including chassis 2, the spacing 4 of having arranged of the upside rectangular array on chassis 2, the upper end four corners of spacing 4 all sets up to the fillet, and movable mounting has volume calculation subassembly 7 on the spacing 4, and the frame 6 has been dialled in the upper end internalization alternate of chassis 2, can restrict the moving direction of volume calculation subassembly 7 through spacing 4 to prevent that count piece 71 and base block 73 among the volume calculation subassembly 7 from empting.

In this embodiment, the volume calculating assembly 7 includes a counting block 71, an inner inserting column 72, a base block 73 and a limiting block 74, the limiting block 74 is fixed at the lower end of the base block 73, the limiting block 74 is movably inserted between four adjacent limiting frames 4, the base block 73 is arranged above the limiting frames 4 in a rectangular array, a vertical counting block 71 is arranged above each base block 73, inner slots are arranged at the upper sides of the base blocks 73 and the upper center of the counting block 71, the inner inserting column 72 is fixed at the lower center of the counting block 71, the inner inserting column 72 is movably inserted in the lower counting block 71 or the inner slot in the base block 73, cuboids of various sizes can be formed by the counting block 71, the volume of the cuboids can be verified according to the number of the counting blocks 71, the two counting blocks 71 are prevented from being separated from each other by the inner inserting column 72, the volume of the counting block 71 is equal to the volume of the base block 73 and is a cube, counting block 71 and base block 73 are the magnet piece, and between two adjacent base blocks 73, mutual magnetic attraction between two adjacent counting blocks 71, it can attract each other to contain two adjacent counting blocks 71 and base block 73 of magnetism, further avoid scattering at will, the one corner that is close to each other of four adjacent counting blocks 71 all is equipped with the arc groove, the radius in arc groove is greater than the radius of dialling the one end that frame 6 is located chassis 2, conveniently dial frame 6 and separate adjacent counting block 71.

In this embodiment, the enclosing cover 1 has been cup jointed in the outer activity of the upper end of chassis 2, avoids inside ash falling and protects this device internals when this device is idle, has all alternate magnet circle 3 in the lower extreme of enclosing cover 1 and chassis 2's the upside, and two magnet circles 3 attract each other magnetism, guarantee the stability of enclosing cover 1.

In this embodiment, a resisting plate 8 is fixed on the upper side of the chassis 2, the resisting plate 8 is located in the outer cover 1, and the resisting plate 8 can prevent the base block 73 and the counting block 71 from moving out of the chassis 2.

In this embodiment, the lower end of the chassis 2 is movably inserted with the calculating board 5, so that the calculating table can be conveniently made on the calculating board 5.

By adopting the structure, when the device is used, the device is placed on a horizontal teacher desk, the outer cover 1 is pulled out upwards, the calculating plate 5 is pulled out, a cuboid length-width-height table and the like can be manufactured on the calculating plate 5, then the cuboid is separated according to data on the table, the steps of separating the cuboid are as follows, firstly, the length, the width and the height of the table on the calculating plate 5 are checked, then, the dial frame 6 is pulled out, the dial frame 6 is inserted into the arc groove, the counting block 71 and the base block 73 are shifted backwards according to the required length of the cuboid until the base block 73 is abutted against the abutting plate 8, then, the dial frame 6 is inserted into the counting block 71 and the base block 73 which are pulled out in the previous step according to the width of the table, the dial frame 6 is shifted rightwards, a part of the base block 73 and the counting block 71 can be pulled out again, then, the dial frame 6 is inserted into the counting block 71 which is pulled out in the previous step according to the height of the table, the dial frame 6 is pulled upwards, the cuboid with the length, the width and the height specified in the table can be separated out, then counting is carried out, the counted number value of the counting block 71 is filled in the table, and the rest counting blocks 71 and the rest base blocks 73 can be kept not to be disordered due to the function of the inner inserting column 72 and the function of the limiting frame 4 and the limiting block 74 of the other counting blocks 71, so that subsequent resetting is convenient.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a teaching aid is calculated with cuboid volume to primary school's mathematical education which characterized in that: including chassis (2), spacing (4) have been arranged to the upside rectangular array of chassis (2), the upper end four corners of spacing (4) all sets up to the fillet, movable mounting has volume calculation subassembly (7) on spacing (4), the upper end internalization of chassis (2) alternates and has dialled frame (6).

2. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 1, characterized in that: the volume calculating component (7) comprises a counting block (71), an inner inserting column (72), a base block (73) and limiting blocks (74), wherein the limiting blocks (74) are fixed at the lower end of the base block (73), the limiting blocks (74) are movably inserted between four adjacent limiting frames (4), the base block (73) is arranged above the limiting frames (4) in a rectangular array mode, a vertical row of counting blocks (71) is arranged above each base block (73), inner inserting grooves are formed in the upper side of the base block (73) and the upper side center of each counting block (71), the inner inserting column (72) is fixed at the lower side center of each counting block (71), and the inner inserting column (72) is movably inserted into the inner inserting grooves in the counting blocks (71) or the base blocks (73) below in an up-down mode.

3. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 2, characterized in that: the volume of the counting block (71) is equal to that of the base block (73) and is a cube.

4. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 2, characterized in that: the counting blocks (71) and the base blocks (73) are both magnet blocks, and the two adjacent base blocks (73) and the two adjacent counting blocks (71) are mutually attracted in a magnetic manner.

5. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 2, characterized in that: the corners of the four adjacent counting blocks (71) close to each other are provided with arc grooves, and the radius of each arc groove is larger than that of one end of the shifting frame (6) located in the chassis (2).

6. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 1, characterized in that: the outer cover (1) is movably sleeved outside the upper end of the chassis (2).

7. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 6, characterized in that: magnet rings (3) are inserted into the lower end of the outer cover (1) and the upper side of the chassis (2), and the two magnet rings (3) are mutually attracted in a magnetic manner.

8. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 6, characterized in that: a resisting plate (8) is fixed on the upper side of the chassis (2), and the resisting plate (8) is positioned in the outer cover (1).

9. The cuboid volume calculation teaching aid for primary school mathematics teaching of claim 1, characterized in that: a calculating plate (5) is movably inserted in the lower end of the chassis (2).