CN206460681U - A kind of primary school mathematics multiplication demonstration device for teaching - Google Patents

Abstract

The utility model discloses a kind of primary school mathematics multiplication demonstration device for teaching, including the second fagging, multiplication sign label and handle, second fagging is connected with the first fagging and the 3rd fagging respectively by hinge, first fagging, the surface of second fagging and the 3rd fagging is provided with clipboard, the side of the multiplication sign label is fixed with clipboard and arrow label, the parcel tray is connected with the 3rd fagging, cavity is provided with above the parcel tray, the handle is connected by rotating shaft with the first fagging, install fluted in the outside of the handle, hole slot is provided with the handle.The primary school mathematics multiplication demonstration device for teaching, using accordion structure, small volume, carries easy to use, the writing demonstration form of code requirement and provided with arrow label, substantially reduce student and understand difficulty, quality of instruction is good, and practicality is high, is allowed to preferably carry out multiplication teaching work, more easily allow student to understand multiplication knowledge, improve the efficiency of study.

Description

A kind of primary school mathematics multiplication demonstration device for teaching

Technical field

The utility model is related to primary school's multiplication teaching equipment technical field, and specially a kind of primary school mathematics multiplication teaching is used Apparatus for demonstrating.

Background technology

Multiplication refers to the shortcut for adding up identical number, is that the quantitative change of addition causes the result of qualitative change, multiplication is known Knowledge is also one of China's primary school mathematics basis of curriculum knowledge, with quite varied, and primary school mathematics multiplication teaching demand is higher, institute Also it is on the increase therewith with device requirement, multiplication demonstration device for teaching is exactly one of them, the teaching of multiplication on the market is with drilling Showing device species is various, pattern is different, but the multiplication demonstration device for teaching nowadays sold also has more or less deficiency.

Do not use accordion structure such as, volume is larger, teacher carries, in-convenience in use, the book without code requirement Demonstration form and arrow label are write, student understands that difficulty is big, and quality of instruction is poor, and practicality is not high, and causing to use needs Ask not high, in order to solve weak point existing on the market, be badly in need of improving the technology of device multiplication demonstration device for teaching at present, It is allowed to preferably carry out multiplication teaching work, more easily allows student to understand multiplication knowledge, improves the efficiency of study.

Utility model content

The purpose of this utility model is to provide a kind of primary school mathematics multiplication demonstration device for teaching, to solve above-mentioned background The volume that is proposed in technology is larger, carry in-convenience in use, student understands the problems such as difficulty is big.

To achieve the above object, the utility model provides following technical scheme：A kind of primary school mathematics multiplication teaching demonstration Device, including the second fagging, multiplication sign label, parcel tray and handle, second fagging by hinge respectively with the first fagging and 3rd fagging is connected, and the upper and lower ends of the second fagging are separately installed with the first fagging and the 3rd fagging, first fagging, The surface of second fagging and the 3rd fagging is provided with clipboard, and the multiplication sign label is connected with the first fagging, the multiplication sign The side of label is fixed with clipboard and arrow label, and the upper and lower ends of arrow label are provided with clipboard, described second The surface inserting of fagging has addition label, and the parcel tray is connected with the 3rd fagging, and the top of the parcel tray sets free Hole, the handle is connected by rotating shaft with the first fagging, and the outside of the handle installs fluted, is provided with the handle Hole slot.

It is preferred that, the surface area of first fagging, the second fagging and the 3rd fagging is equal.

It is preferred that, the clipboard is erasable formula blank.

It is preferred that, the volume of the groove is more than the volume of parcel tray.

It is preferred that, the cross-sectional area of the handle is less than the surface area in cavity, and the rotatable angular range of handle be 0- 90°。

Compared with prior art, the beneficial effects of the utility model are：The primary school mathematics multiplication demonstration device for teaching, is adopted With accordion structure, small volume, teacher carries, using more convenient, the writing demonstration form of code requirement and provided with arrow Leader board, substantially reduces student and understands difficulty, quality of instruction is relatively good, and practicality is high, is allowed to preferably carry out multiplication teaching work Industry, more easily allows student to understand multiplication knowledge, improves the efficiency of study.

Brief description of the drawings

Fig. 1 is the utility model deployed configuration schematic diagram；

Fig. 2 is the utility model the first fagging back structures schematic diagram；

Fig. 3 is the utility model closing structure schematic diagram.

In figure：1st, the first fagging, 2, hinge, the 3, second fagging, the 4, the 3rd fagging, 5, clipboard, 6, multiplication sign label, 7, arrow Leader board, 8, plus sige label, 9, cavity, 10, parcel tray, 11, groove, 12, handle, 13, hole slot, 14, rotating shaft.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of primary school mathematics multiplication teaching demonstration dress Put, including the first fagging 1, hinge 2, the second fagging 3, the 3rd fagging 4, clipboard 5, multiplication sign label 6, arrow label 7, plus sige mark Board 8, cavity 9, parcel tray 10, groove 11, handle 12, hole slot 13 and rotating shaft 14, the second fagging 3 is by hinge 2 respectively with first Fagging 1 is connected with the 3rd fagging 4, and the upper and lower ends of the second fagging 3 are separately installed with the first fagging 1 and the 3rd fagging 4, the The surface area of one fagging 1, the second fagging 3 and the 3rd fagging 4 is equal, using accordion structure, the small volume after folding, religion Teacher carries, using more convenient, and the surface of the first fagging 1, the second fagging 3 and the 3rd fagging 4 is provided with clipboard 5, writing Plate 5 is erasable formula blank, writes relatively convenient, writing is clear, and the form more specification that clipboard 5 is arranged, and coordinates arrow Leader board 7 is used, and is substantially reduced student and is understood difficulty, quality of instruction is relatively good, and practicality is high, is allowed to preferably carry out multiplication religion Operation is learned, more easily allows student to understand multiplication knowledge, the efficiency of study is improved, multiplication sign label 6 is connected with the first fagging 1, The side of multiplication sign label 6 is fixed with clipboard 5 and arrow label 7, and the upper and lower ends of arrow label 7 are provided with clipboard 5, The surface inserting of second fagging 3 has addition label 8, and parcel tray 10 is connected with the 3rd fagging 4, and the top of parcel tray 10 is provided with Cavity 9, handle 12 is connected by rotating shaft 14 with the first fagging 1, and fluted 11, the volume of groove 11 are installed in the outside of handle 12 More than the volume of parcel tray 10, after folding device, parcel tray 10 can be received into groove 11, and hole slot is provided with handle 12 13, the cross-sectional area of handle 12 is less than the surface area in cavity 9, and the rotatable angular range of handle 12 is 0-90 °, and device enters After row is folded, handle 12 rotates 90 ° of presentation vertical states from groove 11, stretches, allows through the cavity 9 on the 3rd fagging 4 User carries carrying with hand, using very convenient.

Operation principle：When using the primary school mathematics multiplication demonstration device for teaching, by the first fagging 1, the and of the second fagging 3 3rd fagging 4 is rotated by hinge 2 to deploy, and follows rotating shaft 14 to turn in groove 11 handle 12, by hole slot 13 by device Hang up, the instruments such as pen, blackboard eraser are taken out from parcel tray 10, good numeral is write in the clipboard 5 on the first fagging 1 and carries out multiplication Computing, is indicated according to the arrow of the side of clipboard 5 on the first fagging 1：Second row numeral is multiplied by first row numeral, is first according to Units multiplies the first row clipboard 5 that the digital sum that units and units multiply obtained by tens is filled up on the second fagging 3 In, then multiply units according to tens and tens multiplies numeral obtained by tens and being filled up on the second fagging 3 second Arrange in clipboard 5, then by the numerical value in first row clipboard 5 on the second fagging 3 and the numerical value phase in second row clipboard 5 Plus, the result drawn is write out in the clipboard 5 on the 3rd fagging 4, and the result is the final numerical value of two digit multiplication, here it is The whole process of primary school mathematics multiplication demonstration device for teaching work.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of primary school mathematics multiplication demonstration device for teaching, including the second fagging (3), multiplication sign label (6), parcel tray (10) and Handle (12), it is characterised in that：Second fagging (3) by hinge (2) respectively with the first fagging (1) and the 3rd fagging (4) It is connected, and the upper and lower ends of the second fagging (3) are separately installed with the first fagging (1) and the 3rd fagging (4), first fagging (1), the surface of the second fagging (3) and the 3rd fagging (4) is provided with clipboard (5), the multiplication sign label (6) and the first fagging (1) it is connected, the side of the multiplication sign label (6) is fixed with clipboard (5) and arrow label (7), and arrow label (7) is upper Lower two ends are provided with clipboard (5), and the surface inserting of second fagging (3) has addition label (8), the parcel tray (10) It is connected with the 3rd fagging (4), empty (9) is provided with above the parcel tray (10), the handle (12) passes through rotating shaft (14) it is connected with the first fagging (1), fluted (11) are installed in the outside of the handle (12), are provided with the handle (12) Hole slot (13).

2. a kind of primary school mathematics multiplication demonstration device for teaching according to claim 1, it is characterised in that：First support The surface area of plate (1), the second fagging (3) and the 3rd fagging (4) is equal.

3. a kind of primary school mathematics multiplication demonstration device for teaching according to claim 1, it is characterised in that：The clipboard (5) it is erasable formula blank.

4. a kind of primary school mathematics multiplication demonstration device for teaching according to claim 1, it is characterised in that：The groove (11) volume is more than the volume of parcel tray (10).

5. a kind of primary school mathematics multiplication demonstration device for teaching according to claim 1, it is characterised in that：The handle (12) cross-sectional area is less than the surface area of empty (9), and the rotatable angular range of handle (12) is 0-90 °.