CN211349773U

CN211349773U - Addition and subtraction calculation teaching aid for primary school mathematics teaching

Info

Publication number: CN211349773U
Application number: CN202020485780.4U
Authority: CN
Inventors: 潘玉萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-08-25
Anticipated expiration: 2030-04-07

Abstract

The utility model discloses a teaching aid is calculated with plus-minus method to primary school's mathematical education, including base, unit count piece, scale paper, drawer and fixed pin, base top one side department is equipped with integrated into one piece's backplate, the base top is equipped with two stands, the backplate is close to the vertical center department of stand one side and bonds and has transparent intermediate layer, and scale paper joint is in transparent intermediate layer, and base one side outer wall is opened there is the cavity, and cavity bottom both sides department all bonds and has the slide rail, and drawer bottom both sides department all bonds and has the slider, and the specification of slider and the specification looks adaptation of slide rail, drawer top outer wall open have the round hole groove that the equidistance distributes, the specification in round hole groove and the outer disc specification looks adaptation of unit count piece, unit count piece is cylindrical structure, and unit count piece top center department opens the central through-hole that has a perfect understanding. The teaching aid is simple in overall design, convenient to take and carry, high in stability, suitable for being used in the teaching of addition and subtraction operation of the lower grades of primary schools and capable of promoting the learning efficiency of students.

Description

Addition and subtraction calculation teaching aid for primary school mathematics teaching

Technical Field

The utility model discloses mathematics teaching aid technical field specifically is a teaching aid is calculated with addition subtraction to primary school's mathematics teaching.

Background

Mathematics is a subject of studying concepts such as quantity, structure, variation, space, and information, and belongs to a form science from a certain point of view. Mathematics is generated from counting, computing, measuring, and observing the shape and motion of objects through the use of abstraction and logical reasoning. Mathematics has become part of the educational category in many countries and regions. It is used in different fields including science, engineering, medicine, economics and finance. Mathematicians also study pure mathematics, which is the material of mathematics itself, and do not target any practical application.

Mathematics is a more important study subject in the teaching process, and mathematics in the lower grades of primary schools are designed into some simple addition and subtraction operation and cognition, and the teaching of pure numbers or theories is performed in the teaching process, so that the students cannot visually and vividly show the appearance performance of the mathematics, but the existing addition and subtraction teaching aids are relatively lacked, so that the addition and subtraction calculation teaching aid for the mathematical teaching of the primary schools is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a teaching aid is calculated with addition subtraction to primary school's mathematical education to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an addition and subtraction algorithm teaching aid for primary school mathematics teaching comprises a base, a unit counting part, scale paper, a drawer and a fixing pin, a back plate which is integrally formed is arranged at one side of the top of the base, two upright posts are arranged at the top of the base, a transparent interlayer is bonded at the vertical center of one surface of the back plate close to the upright post, the scale paper is clamped in the transparent interlayer, a cavity is formed on the outer wall of one side of the base, sliding rails are bonded at the two sides of the bottom of the cavity, sliding blocks are bonded at the two sides of the bottom of the drawer, the specification of the sliding block is matched with that of the sliding rail, circular hole grooves are formed in the outer wall of the top of the drawer and are distributed at equal intervals, the specification of the circular hole groove is matched with the specification of the outer circular wall of the unit counting piece, the unit counting piece is of a cylindrical structure, and the center of the top of the unit counting part is provided with a through center through hole, and the specification of the center through hole is matched with that of the upright post.

Furthermore, the top parts of the two sides of the base are provided with fixed through grooves communicated with the cavity, the top parts of the two sides of the drawer are provided with fixed clamping grooves, and the fixed pins are inserted into the fixed clamping grooves and the fixed through grooves.

Furthermore, the height of the unit grid of the scale paper is equal to that of the unit counting piece, and the unit grid on the scale paper is marked with numbers from bottom to top in sequence.

Furthermore, a hand-held handle is arranged at the center of the outer wall of the top of the back plate, and the base, the back plate and the hand-held handle are of formed structures made of plastic materials.

Furthermore, a drawer handle is fixed on the outer wall of the drawer close to the top through screws, and the drawer is made of plastic materials.

Furthermore, the cross section of the sliding rail is of an inverted convex structure, and the sliding block is provided with a convex through groove matched with the sliding rail.

Compared with the prior art, the beneficial effects of the utility model are that: when the teaching aid is used, the fixing pin is pulled out, the drawer is pulled out again, a proper amount of unit counting pieces are taken out from the circular groove, the unit counting pieces are sequentially placed on the stand column, corresponding height numbers on the scale paper are read, addition and subtraction demonstration teaching is realized, in the teaching display process, students can objectively observe the increase and decrease of the unit counting pieces and the digital change of the corresponding height on the scale paper, namely abstract theories are combined with real objects, further understanding of the students on addition and subtraction operation is enhanced, the learning effect of the students is promoted, through the arrangement of the base, on one hand, an installation space is provided for the drawer, on the other hand, the effect of greatly reducing the gravity center of the teaching aid is also played, further, the stability of the teaching aid is effectively enhanced, the condition of toppling or unstable placement is prevented, through the arrangement of the drawer and the circular groove, a storage space is provided for the unit counting pieces, and the, the teaching aid is simple in overall design, convenient to take and carry, high in stability, suitable for being used in the teaching of addition and subtraction operation of the lower grades of primary schools and capable of promoting the learning efficiency of students.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the base and the back plate of the present invention;

FIG. 3 is a schematic view of the drawer structure of the present invention;

FIG. 4 is a schematic structural view of a unit counting member of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 3 according to the present invention;

fig. 6 is a schematic structural diagram of the slide rail and the slide block of the present invention.

In the figure: the multifunctional counter comprises a base 1, a back plate 2, upright posts 3, a unit counting part 4, a portable handle 5, a transparent interlayer 6, scale paper 7, a cavity 8, a slide rail 9, a slide block 10, a drawer 11, a circular hole groove 12, a fixed clamping groove 13, a fixed through groove 14, a fixed pin 15, a drawer handle 16 and a central through hole 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-6: an addition and subtraction calculation teaching aid for primary school mathematics teaching comprises a base 1, a unit counting part 4, a scale paper 7, a drawer 11 and a fixed pin 15, wherein an integrally formed back plate 2 is arranged at one side of the top of the base 1, two upright posts 3 are arranged at the top of the base 1, a transparent interlayer 6 is bonded at the vertical center of one surface of the back plate 2 close to the upright posts 3, the scale paper 7 is clamped in the transparent interlayer 6, a cavity 8 is formed in the outer wall of one side of the base 1, slide rails 9 are bonded at two sides of the bottom of the cavity 8, slide blocks 10 are bonded at two sides of the bottom of the drawer 11, the specification of each slide block 10 is matched with the specification of each slide rail 9, circular hole grooves 12 are distributed equidistantly on the outer wall of the top of the drawer 11, the specification of each circular hole groove 12 is matched with the specification of the outer circular wall of the unit counting part 4, the unit counting part 4 is of a, the specification of the central through hole 17 is matched with the specification of the upright post 3, the top parts of two sides of the base 1 are respectively provided with a fixed through groove 14 communicated with the cavity 8, the top parts of two sides of the drawer 11 are respectively provided with a fixed clamping groove 13, the fixed pin 15 is inserted in the fixed clamping groove 13 and the fixed through groove 14, the height of each unit lattice of the scale paper 7 is equal to that of the unit counting piece 4, the number of each unit lattice on the scale paper 7 is sequentially marked from bottom to top, the center of the outer wall of the top of the back plate 2 is provided with a hand-held handle 5, the base 1, the back plate 2 and the hand-held handle 5 are of a formed structure made of plastic materials, the drawer handle 16 is fixed on the outer wall of the drawer 11 close to the top part through screws, the drawer 11 is made of plastic materials, the cross section of the sliding rail 9 is of an inverted convex structure, the sliding block 10 is provided with a convex through groove matched with the sliding rail, when the, the unit counting pieces 4 are sequentially placed on the stand column 3, corresponding height numbers on the scale paper 7 are read, addition and subtraction demonstration teaching is realized, in the teaching display process, students can objectively observe increase and decrease of the unit counting pieces 4 and digital changes of corresponding heights on the scale paper 7, abstract theories are combined with real objects, understanding of the students on addition and subtraction operation is further enhanced, learning effects of the students are promoted, through arrangement of the base 1, on one hand, an installation space is provided for the drawer 11, on the other hand, the effect of greatly reducing the center of gravity of the teaching aid is also achieved, stability of the teaching aid is effectively enhanced, toppling or unstable placement is prevented, through arrangement of the drawer 11 and the circular hole groove 12, a storage space is provided for the unit counting pieces 4, the unit counting pieces 4 are prevented from being lost when not used, the teaching aid is concise in overall design and convenient to take and carry, the stability is high, and the device is suitable for being used in the teaching of addition and subtraction operation of the lower grades of primary schools and can promote the learning efficiency of students.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a teaching aid is calculated with addition subtraction to primary school's mathematical education, includes base (1), unit count piece (4), scale paper (7), drawer (11) and fixed pin (15), its characterized in that: the integrated backboard (2) is arranged at one side of the top of the base (1), the two upright posts (3) are arranged at the top of the base (1), the transparent interlayer (6) is bonded at the vertical center of the backboard (2) close to one side of the upright posts (3), the scale paper (7) is connected in the transparent interlayer (6), the cavity (8) is formed in the outer wall of one side of the base (1), the slide rails (9) are bonded at the two sides of the bottom of the cavity (8), the sliding blocks (10) are bonded at the two sides of the bottom of the drawer (11), the specification of the sliding blocks (10) is matched with that of the slide rails (9), the circular hole grooves (12) distributed at equal intervals are formed in the outer wall of the top of the drawer (11), the specification of the circular hole grooves (12) is matched with that of the outer circular wall of the unit counting piece (4), the unit counting piece (4) is of a cylindrical structure, and the center through hole (17) is formed at the center of the top of, the specification of the central through hole (17) is matched with that of the upright post (3).

2. The addition and subtraction algorithm teaching aid for primary school mathematics teaching according to claim 1, characterized in that: the fixed through groove (14) that communicate with cavity (8) have all been opened to base (1) both sides top department, fixed slot (13) have all been opened to drawer (11) both sides top department, fixed pin (15) are inserted and are located fixed slot (13) and fixed logical inslot (14).

3. The addition and subtraction algorithm teaching aid for primary school mathematics teaching according to claim 1, characterized in that: the height of the unit grid of the scale paper (7) is equal to that of the unit counting piece (4), and the unit grid on the scale paper (7) is marked with numbers sequentially from bottom to top.

4. The addition and subtraction algorithm teaching aid for primary school mathematics teaching according to claim 1, characterized in that: the portable electric scooter is characterized in that a portable handle (5) is arranged in the center of the outer wall of the top of the backboard (2), and the base (1), the backboard (2) and the portable handle (5) are of formed structures made of plastic materials.

5. The addition and subtraction algorithm teaching aid for primary school mathematics teaching according to claim 1, characterized in that: a drawer handle (16) is fixed on the outer wall of the drawer (11) close to the top through screws, and the drawer (11) is made of plastic materials.

6. The addition and subtraction algorithm teaching aid for primary school mathematics teaching according to claim 1, characterized in that: the cross section of the sliding rail (9) is of an inverted convex structure, and the sliding block (10) is provided with a convex through groove matched with the sliding rail.