CN211178185U - Modified is teaching aid for mathematical education - Google Patents

Abstract

The utility model discloses an improved teaching aid for mathematics teaching, comprising: an upper circular ruler, a lower circular ruler, a straight ruler and a drawing rod; The ends are fixedly provided with fixed blocks, the inner center of the straightedge is fixedly provided with a rotating cavity, the rotating cavity is fixedly installed with a turntable, and the side surface of the turntable is fixedly connected with a transfer rod that penetrates the straightedge, and the circular drawing rod A telescopic cavity is fixed inside the other end, a telescopic rod is movably installed inside the telescopic cavity, a fixed cylinder is fixedly connected to the side wall of one end of the circular rod, and a fixed stud is movably screwed inside the fixed cylinder. A chalk tube is fixedly connected to one end of the rod away from the drawing circle rod, and a fastening stud is fixed and screwed inside a side wall of the chalk tube. The utility model provides an improved teaching aid for mathematics teaching, which is multifunctional, simple in structure and low in cost.

Description

An improved teaching aid for mathematics teaching

technical field

The utility model relates to the technical field of teaching tools, in particular to an improved teaching tool for mathematics teaching.

Background technique

Teaching aids are physical objects for the purpose of disseminating science and technology and educating people. They are complete technology media and indispensable equipment in youth science and technology activities. The teaching aids used in scientific and technological activities include physical teaching aids and replica teaching aids. Specifically, there are specimens or samples from nature: such as biological specimens, mineral specimens, fossils, rocks and rare animal samples used in scientific and technological education activities. There are also imitations and models of specimens: some specimens are very precious (such as the Peking Man skull fossil) and should not be spread everywhere, so people have made various imitations and models to spread scientific and technological information. Another example is the anatomical model of the human body, the model used in the three models of navigation, sea and car. Teaching aids can also be divided into demonstration and practical operation.

However, the existing teaching aids for mathematics have the following shortcomings: the traditional mathematics teaching aids are usually straight edge plates and circular tooth plates. Although the structure is simple, the function is single. One teaching aid can only complete the drawing of one shape. Due to the limited number of corresponding teaching aids, the supply of different types of teaching aids will be in short supply, so it is necessary to purchase additional teaching aids of different types.

Utility model content

The purpose of this utility model is to provide an improved teaching aid for mathematics teaching, so as to solve the problems raised in the above background technology.

In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved teaching aid for mathematics teaching, comprising: an upper circular ruler, a lower circular ruler, a ruler and a drawing rod, and both ends of the upper circular ruler are fixedly installed with Turning pins, the side surfaces of the two turning pins are fixedly installed on both ends of the lower ruler, both ends of the ruler are fixedly provided with fixing blocks, and the two fixing blocks are fixedly connected to the inner walls of the two ends of the lower ruler. The inner center of the ruler is fixedly provided with a rotating cavity, a turntable is fixedly installed inside the rotation cavity, the side surface of the turntable is fixedly connected with a transfer rod that penetrates the ruler, and the other end of the transfer rod is fixedly sleeved on one end of the round rod. Inside, a telescopic cavity is fixed inside the other end of the circular drawing rod, a telescopic rod is movably installed inside the telescopic cavity, a fixing cylinder is fixedly connected to the side wall of one end of the circular drawing rod, and a fixed cylinder is movably screwed inside the fixed cylinder. A fixed stud, one end of the fixed stud away from the drawing circle rod is fixedly connected with a fixed knob, and one end of the telescopic rod away from the drawing circle rod is fixedly connected with a chalk tube, and a side wall of the chalk tube is fixedly screwed with a fastening screw. The end of the fastening stud close to the chalk tube is fixedly connected with a fastening arc plate, the end of the fastening stud away from the chalk tube is fixedly connected with a fastening knob, and an angle scale is fixed on the surface of the upper ruler. A length scale is fixed on the surface of the ruler.

Further, three iron suction sheets are fixedly installed on the other surface of the upper ruler, three iron suction sheets are fixedly installed on the other surface of the lower ruler, and three iron suction sheets are fixedly installed on the other surface of the ruler.

Further, the inside of the fixing cylinder is communicated with the telescopic cavity, so as to realize the function of the fixed stud sticking to the telescopic rod.

Further, the angle scale and the length scale are fixed on the same plane, and the nine iron suction sheets are fixedly installed on the same plane.

Further, the diameter of the telescopic rod is smaller than the diameter of the telescopic cavity, and the diameter of the turntable is smaller than the diameter of the rotating cavity.

Further, the center position of the upper ruler, the center position of the lower ruler, the center position of the rotating cavity and the center position of the turntable are all at one point.

Compared with the prior art, the beneficial effects of the present utility model are:

The utility model can realize the effect of flipping and folding by relying on two rotating pins on the upper circular ruler and the lower circular ruler. When it is only necessary to draw a straight line or measure the distance of the straight line, the upper circular ruler and the lower circular ruler are rotated and folded, and when a circle needs to be drawn Or in the case of a circular arc, turn the upper and lower circular rulers to open, this teaching aid can complete the drawing and measurement of straight lines, the drawing of arcs, the measurement of angles and other functions, with simple structure and low cost, to avoid the shortage of teaching aids. phenomenon, easy to promote.

Description of drawings

1 is a schematic structural diagram of an improved teaching aid for mathematics teaching in an embodiment of the present utility model;

Fig. 2 is the assembly structure schematic diagram of the improved mathematics teaching teaching aid in the embodiment of Fig. 1 that draws a round rod;

Fig. 3 is the partial enlarged structure schematic diagram of A place in Fig. 1;

FIG. 4 is a schematic diagram of a rear view of the improved teaching aid for mathematics teaching in the embodiment of FIG. 1 .

Reference signs: 1-upper round ruler; 2-lower round ruler; 3-straight ruler; 4-drawing round rod; 5-fixed block; 6-angle scale; 7-length scale; 8-turn pin; 9-transfer Rod; 10-rotating cavity; 11-turntable; 12-expanding cavity; 13-telescopic rod; 14-fixing cylinder; 15-fixing stud; 16-fixing knob; 17-chalk tube; 18-fastening stud; 19 - Fastening knob; 20- Fastening arc plate; 21- Iron suction sheet.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-4 together, FIG. 1 is a schematic structural diagram of an improved teaching aid for mathematics teaching in an embodiment of the present utility model, and FIG. 2 is an assembly of the improved teaching aid for mathematics teaching in the embodiment of FIG. 1 to draw a circular rod Structural schematic diagram, Fig. 3 is the partial enlarged structural schematic diagram of A place in Fig. 1, Fig. 4 is the rear view structure schematic diagram of the improved mathematics teaching aid in the embodiment of Fig. 1, wherein, a kind of improved mathematics teaching aid, including : The upper ruler 1, the lower ruler 2, the ruler 3 and the drawing rod 4, the upper ruler 1 is fixedly installed with a rotating pin 8 at both ends, and the side surfaces of the two rotating pins 8 are fixedly installed on the lower ruler At both ends of the ruler 2, the upper ruler 1 and the lower ruler 2 can achieve the effect of flipping and folding by means of two rotating pins 8. The two ends of the ruler 3 are fixed with fixed blocks 5, and the fixing blocks 5 are used to connect the ruler. 3 and the effect of the lower ruler 2, the two fixed blocks 5 are fixedly connected to the inner walls of the two ends of the lower ruler 2, the inner center of the ruler 3 is fixedly provided with a rotating cavity 10, and the rotating cavity 10 provides a space for the turntable 11 to rotate, A turntable 11 is fixedly installed inside the rotating cavity 10, and the rotation of the turntable 11 can realize the effect of drawing a circular arc. The side surface of the turntable 11 is fixedly connected with a transfer rod 9 penetrating the ruler 3, and the other end of the transfer rod 9 is fixed with a sleeve Connected to the inside of one end of the circle drawing rod 4 , the other end of the circle drawing rod 4 is fixedly provided with a telescopic cavity 12 , a telescopic rod 13 is movably installed in the telescopic cavity 12 , and the telescopic rod 13 can move in the telescopic cavity 12 , To achieve the effect of adjusting the corresponding radius of the arc, a fixing cylinder 14 is fixedly connected to the side wall of one end of the circular drawing rod 4. The fixing cylinder 14 is used to fix and install the fixing stud 15, and the fixing cylinder 14 is movably screwed with a fixing stud inside. 15. A fixing knob 16 is fixedly connected to one end of the fixing stud 15 away from the circle-drawing rod 4. By twisting the fixing knob 16, the effect of adjusting the elastic and fixing of the telescopic rod 13 can be realized. The telescopic rod 13 is fixed at one end away from the circle-drawing rod 4. A chalk tube 17 is connected, and the chalk tube 17 is used to install the chalk. A fastening stud 18 is fixed and screwed inside a side wall of the chalk tube 17. Arc-fixing plate 20, the tightening arc plate 20 can achieve the effect of assisting in fixing the chalk, one end of the tightening stud 18 away from the chalk tube 17 is fixedly connected with a tightening knob 19, and the surface of the upper ruler 1 is fixedly provided with an angle scale 6. A length scale 7 is fixed on the surface of the ruler 3 .

Three iron suction sheets 21 are fixedly installed on the other surface of the upper ruler 1 , three iron suction sheets 21 are fixedly installed on the other surface of the lower ruler 2 , and three iron suction sheets are fixedly installed on the other surface of the ruler 3 . Sheet 21, the iron suction sheet 21 can be used to adsorb the teaching aid on the blackboard.

The interior of the fixing cylinder 14 is communicated with the telescopic cavity 12 , and is used for realizing the effect of the fixing stud 15 being in close contact with the telescopic rod 13 , and finally achieving the effect of adjusting and fixing the telescopic rod 13 .

The angle scale 6 and the length scale 7 are fixed on the same plane, and the nine iron suction sheets 21 are fixedly installed on the same plane, so that the fixed surface and the working surface can be reasonably utilized in the same plane.

The diameter of the telescopic rod 13 is smaller than that of the telescopic cavity 12, so that the telescopic rod 13 can move freely inside the telescopic cavity 12. The diameter of the turntable 11 is smaller than the diameter of the rotating cavity 10, and the turntable 11 is provided. enough room for rotation.

The position of the center of the upper circle 1, the center of the lower circle 2, the center of the rotating cavity 10 and the center of the turntable 11 are all at one point, so as to achieve the effect of drawing a standard arc.

To sum up, the present invention provides an improved teaching aid for mathematics teaching. When working, the teaching aid is placed close to the blackboard, and the iron-absorbing sheet 21 can be used to adsorb the teaching aid on the blackboard. The lower ruler 2 can achieve the effect of flipping and folding by means of two pivot pins 8. When only need to draw a straight line or measure the distance of the straight line, rotate and fold the upper ruler 1 and the lower ruler 2, and stick them on the blackboard to complete the drawing. Work, when it is necessary to draw a circle or arc, turn the upper ruler 1 and the lower ruler 2 to open, install the chalk in the chalk tube 17, twist the tightening knob 19, and then drive the tightening stud 18 to rotate and move, The effect of tightening the arc plate 20 to assist in fixing the chalk can be realized, and the fixing knob 16 can be twisted to drive the fixing stud 15 to rotate and move, thereby realizing the effect of adjusting the elastic and fixing of the telescopic rod 13, and the telescopic rod 13 can be in the telescopic cavity 12. Move, and finally achieve the effect of adjusting the corresponding radius of the arc. The device has simple structure, simple operation, small footprint, but has complete functions and comprehensive drawing shapes.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

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

Claims (6)

1. A modified is teaching aid for mathematical education which characterized in that includes: the multifunctional ruler comprises an upper round ruler (1), a lower round ruler (2), a ruler (3) and a drawing round rod (4), wherein rotary pins (8) are fixedly mounted at both ends of the upper round ruler (1), two rotary pins (8) are fixedly mounted at both ends of the lower round ruler (2) on the side surfaces of the rotary pins (8), fixed blocks (5) are fixedly arranged at both ends of the ruler (3), the two fixed blocks (5) are fixedly connected with the inner walls at both ends of the lower round ruler (2), a rotary cavity (10) is fixedly arranged at the inner center of the ruler (3), a rotary disc (11) is fixedly mounted in the rotary cavity (10), a rotary rod (9) penetrating through the ruler (3) is fixedly connected to the side surface of the rotary disc (11), the other end of the rotary rod (9) is fixedly connected in the drawing round rod (4), a telescopic cavity (12) is fixedly arranged in the other end of the drawing round rod (4), and a telescopic rod (13) is movably mounted, draw pole (4) one end lateral wall fixedly connected with solid fixed cylinder (14), gu fixed cylinder (14) inside activity spiro union has fixing stud (15), fixing stud (15) are kept away from and are drawn pole (4) one end fixedly connected with fixed knob (16), draw pole (4) one end fixedly connected with chalk pipe (17) are kept away from in telescopic link (13), chalk pipe (17) a lateral wall inside fixed spiro union has fastening stud (18), fastening stud (18) are close to chalk pipe (17) one end fixed switching and have fastening arc board (20), chalk pipe (17) one end fixedly connected with fastening knob (19) are kept away from in fastening stud (18), go up circle chi (1) fixed surface and seted up angle scale (6), length scale (7) have been seted up to ruler (3) fixed surface.

2. The improved teaching aid for mathematical education as claimed in claim 1, wherein the other surface of the upper round ruler (1) is fixedly provided with three iron absorbing sheets (21), the other surface of the lower round ruler (2) is fixedly provided with three iron absorbing sheets (21), and the other surface of the straight ruler (3) is fixedly provided with three iron absorbing sheets (21).

3. An improved teaching aid for mathematical education as claimed in claim 1 further comprising: the inner part of the fixed cylinder (14) is communicated with the telescopic cavity (12) and is used for realizing the function that the fixed stud (15) is tightly attached to the telescopic rod (13).

4. An improved teaching aid for mathematical education as claimed in claim 2, further comprising: the angle scales (6) and the length scales (7) are fixedly arranged on the same plane, and nine iron absorbing sheets (21) are fixedly arranged on the same plane.

5. An improved teaching aid for mathematical education as claimed in claim 3 further comprising: the diameter size of the telescopic rod (13) is smaller than that of the telescopic cavity (12), and the diameter size of the rotary table (11) is smaller than that of the rotary cavity (10).

6. An improved teaching aid for mathematical education as claimed in claim 5 further comprising: the circle center position of the upper circular ruler (1), the circle center position of the lower circular ruler (2), the circle center position of the rotating cavity (10) and the circle center position of the rotating disc (11) are all on one point.

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