Combined mathematics teaching aid

Abstract

The utility model provides a combined mathematics teaching aid which comprises a base plate, an angle measuring frame, a connecting plate, a ruler and a movable frame, the angle measuring frame is fixed on the base plate, the connecting plate is vertically fixed on the side face of the base plate, the side end of the ruler is sleeved on the outer side of the connecting plate, and the movable frame is movably connected on the base plate. A positioning column is installed on the base plate close to the circle center of the angle measuring frame, the long circular slide way is connected to the outer side of the positioning column in a sliding mode, a row of connecting holes parallel to the long circular slide way are formed in the movable frame, and auxiliary rods are movably connected into the connecting holes. According to the utility model, the angle measuring frame is fixed on the base plate, so that the measurement operation of angles with different sizes can be completed through the inner frame and the outer arc-shaped frame, the drawing of a fixed angle can be completed by utilizing the auxiliary rod and the ruler, and the drawing of triangles with different inner angles can be completed by matching with the lateral connecting plate; therefore, combined drawing of different shapes in the mathematics teaching process can be expanded, and convenience and practicability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mathematics teaching aids, and specifically relates to a combined mathematics teaching aid. Background Art

[0002] In the process of mathematics teaching, the teaching of geometric figures usually requires the drawing of different types of geometric shapes. However, due to the complexity of geometric shapes, several different types of drawing tools are usually required to work together. The existing geometric tools are usually for drawing single shapes. Teachers need to use different tools when drawing geometric figures in class, which will take up part of the class time and affect the teaching quality.

[0003] Based on this, a combined mathematics teaching aid is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a combined mathematics teaching aid in view of the deficiencies of the above-mentioned prior art to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a combined mathematics teaching aid, including a base plate, an angle measuring frame, a connecting plate, a ruler and a movable frame;

[0006] The angle measuring frame is fixed on the base plate, and a connecting plate is vertically fixed on the side of the base plate, the side end of the ruler is sleeved on the outer side of the connecting plate, and the movable frame is movably connected to the base plate;

[0007] The movable frame is provided with an oblong slideway, a positioning column is installed on the base plate near the center of the angle measuring frame, and the oblong slideway is slidably connected to the outside of the positioning column;

[0008] The movable frame is provided with a row of connection holes parallel to the oblong slideway, and an auxiliary rod is movably connected in any of the connection holes, and the length of the auxiliary rod is not less than half of the length of the base plate.

[0009] As a further description of the present invention, the angle measuring frame includes an inner frame and an outer arc frame, the inner frame and the outer arc frame are both fixed on a base plate, and the centers of the inner frame and the outer arc frame coincide with each other.

[0010] As a further illustration of the present invention, angle measuring lines are provided on both the inner frame and the outer arc frame.

[0011] As a further description of the present invention, the positioning column is a rectangular column, and the movable frame is vertically connected to the base plate.

[0012] As a further illustration of the present invention, the straight line where the plurality of connecting holes are located passes through the center of the angle measuring frame.

[0013] As a further description of the present invention, a connecting sleeve is fixed to one side of the ruler, and the connecting plate is sleeved in the connecting sleeve.

[0014] As a further illustration of the present invention, a threaded pin is threadedly connected to the outer side of the connecting sleeve, and a fixed connection between the connecting plate and the ruler is completed under the action of the threaded pin.

[0015] As a further illustration of the present invention, a length measuring line is provided on the ruler, the ruler and the substrate are arranged parallel to each other, and the lengths of the ruler and the substrate are equal.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The utility model fixes the angle measuring frame on the base plate. The angle measuring frame includes an inner frame and an outer arc frame. Both the inner frame and the outer arc frame are fixed on the base plate. The centers of the inner frame and the outer arc frame coincide with each other. Thus, the inner frame and the outer arc frame can be used to measure angles of different sizes. At the same time, arcs or semicircles of different sizes can be drawn through the inner side of the outer arc frame and the outer side of the inner frame. It is convenient and practical.

[0018] 2. The utility model vertically fixes a connecting plate on the side of the base plate, and the side end of the ruler is sleeved on the outside of the connecting plate. The movable frame is movably connected to the base plate, and an oblong slideway is arranged on the movable frame. A positioning column is installed on the base plate near the center of the angle measuring frame, and the oblong slideway is slidably connected to the outside of the positioning column. The positioning column is a rectangular column, so that the movable frame can be adjusted up and down on the base plate through the action of the positioning column. A row of connecting holes parallel to the oblong slideway is arranged on the movable frame, and an auxiliary rod is movably connected in any connecting hole. The straight line where the multiple connecting holes are located passes through the center of the angle measuring frame. When a triangle with a fixed angle needs to be drawn, First, use the movable frame to move up, and when the connecting hole used coincides with the center of the angle measuring frame, press down to stop the movable frame from moving on the base plate, and then adjust the inclination angle of the auxiliary rod. The rotating shaft on the auxiliary rod is a rotating connecting seat with damping. When the auxiliary rod is rotated to a fixed angle, release the movable frame, and move the movable frame downward under the action of external force. When the connecting hole for connecting the auxiliary rod on the movable frame coincides with the ruler, stop moving the movable frame downward. At this time, the auxiliary rod and the ruler can be used to complete the drawing of a fixed angle, and the lateral connecting plate can be used to complete the drawing of triangles with different internal angles, thereby expanding the combined drawing of different shapes in the mathematics teaching process, which is convenient and practical.

[0019] 3. The utility model fixes a connecting sleeve on one side of the ruler, the connecting plate is sleeved in the connecting sleeve, and the outer side of the connecting sleeve is threadedly connected with a threaded pin. Under the action of the threaded pin, the connecting plate and the ruler are fixedly connected. The distance between the ruler and the base plate can be adjusted through the connecting plate, so that parallel lines with different distances can be drawn. At the same time, triangles of different sizes can be drawn by utilizing the distance between the ruler and the base plate, which is efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the use state of the utility model.

[0022] Description of reference numerals:

[0023] 1-base plate; 2-angle measuring frame; 21-inner frame; 22-outer arc frame; 3-connecting plate; 4-ruler; 41-connecting sleeve; 42-threaded pin; 5-movable frame; 51-oblong slideway; 52-connecting hole; 53-auxiliary rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a combined mathematics teaching aid, including a base plate 1, an angle measuring frame 2, a connecting plate 3, a ruler 4 and a movable frame 5;

[0026] The angle measuring frame 2 is fixed on the substrate 1, and the angle measuring frame 2 includes an inner frame 21 and an outer arc frame 22. The inner frame 21 and the outer arc frame 22 are both fixed on the substrate 1, and the centers of the inner frame 21 and the outer arc frame 22 coincide with each other, so that the measurement operation of angles of different sizes can be completed through the inner frame 21 and the outer arc frame 22.

[0027] At the same time, arcs or semicircles of different sizes can be drawn through the inner side of the outer arc frame 22 and the outer side of the inner frame 21, which is convenient and practical.

[0028] In order to facilitate intuitive measurement and reading of angles, angle measurement lines are provided on both the inner frame 21 and the outer arc frame 22 .

[0029] A connecting plate 3 is vertically fixed on the side of the base plate 1, the side end of the ruler 4 is sleeved on the outer side of the connecting plate 3, and the movable frame 5 is movably connected to the base plate 1;

[0030] The movable frame 5 is provided with an oblong slideway 51, and a positioning column 11 is installed on the base plate 1 near the center of the angle measuring frame 2, and the oblong slideway 51 is slidably connected to the outside of the positioning column 11;

[0031] In order to vertically connect the movable frame 5 to the base plate 1 , the positioning column 11 is a rectangular column, so that the movable frame 5 can be adjusted up and down on the base plate 1 through the action of the positioning column 11 .

[0032] The movable frame 5 is provided with a row of connection holes 52 parallel to the oblong slideway 51 , and an auxiliary rod 53 is movably connected in any of the connection holes 52 , and the length of the auxiliary rod 53 is not less than half of the length of the base plate 1 .

[0033] The straight line where the multiple connecting holes 52 are located passes through the center of the angle measuring frame 2. When it is necessary to draw a triangle with a fixed angle, the movable frame 5 is first moved up. When it is moved up to the connecting hole 52 in use and the center of the angle measuring frame 2 coincide with each other, the movable frame 5 is pressed down to stop the movement of the base plate 1, and then the inclination angle of the auxiliary rod 53 is adjusted. The rotating shaft on the auxiliary rod 53 is a rotating connecting seat with damping. When the auxiliary rod 53 is rotated to a fixed angle, the movable frame 5 is released, and the movable frame 5 is moved down under the action of external force. When the connecting hole 52 connected to the auxiliary rod 53 on the movable frame 5 coincides with the ruler 4, the downward movement of the movable frame 5 is stopped. At this time, the auxiliary rod 53 and the ruler 4 can be used to complete the drawing of a fixed angle, and the lateral connecting plate 3 can be used to complete the drawing of triangles with different internal angles, thereby expanding the combined drawing of different shapes in the mathematics teaching process, which is convenient and practical.

[0034] A connecting sleeve 41 is fixed to one side of the ruler 4, and the connecting plate 3 is sleeved in the connecting sleeve 41. The outer side of the connecting sleeve 41 is threadedly connected with a threaded pin 42. Under the action of the threaded pin 42, the fixed connection between the connecting plate and the ruler 4 is completed. The distance between the ruler 4 and the substrate 1 can be adjusted through the connecting plate 3, so that parallel lines with different distances can be drawn. At the same time, the distance between the ruler 4 and the substrate 1 can also be used to draw triangles of different sizes, which is efficient and convenient.

[0035] In order to facilitate the combined use of the substrate 1 and the ruler 4 , a length measuring line is provided on the ruler 4 . The ruler 4 and the substrate 1 are arranged parallel to each other, and the lengths of the ruler 4 and the substrate 1 are equal.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined mathematics teaching aid, characterized in that: It comprises a base plate (1), an angle measuring frame (2), a connecting plate (3), a ruler (4) and a movable frame (5); The angle measuring frame (2) is fixed on the base plate (1), and a connecting plate (3) is vertically fixed on the side of the base plate (1), the side end of the ruler (4) is sleeved on the outside of the connecting plate (3), and the movable frame (5) is movably connected to the base plate (1); An oblong slideway (51) is provided on the movable frame (5), a positioning column (11) is installed on the base plate (1) near the center of the angle measuring frame (2), and the oblong slideway (51) is slidably connected to the outside of the positioning column (11); The movable frame (5) is provided with a row of connection holes (52) parallel to the oblong slideway (51), and an auxiliary rod (53) is movably connected in any of the connection holes (52), and the length of the auxiliary rod (53) is not less than half the length of the base plate (1).

2. A combined mathematics teaching aid according to claim 1, characterized in that: The angle measuring frame (2) comprises an inner frame (21) and an outer arc frame (22); the inner frame (21) and the outer arc frame (22) are both fixed on the base plate (1); and the centers of the inner frame (21) and the outer arc frame (22) coincide with each other.

3. A combined mathematics teaching aid according to claim 2, characterized in that: Angle measurement lines are provided on both the inner frame (21) and the outer arc-shaped frame (22).

4. A combined mathematics teaching aid according to claim 1, characterized in that: The positioning column (11) is a rectangular column, and the movable frame (5) is vertically connected to the base plate (1).

5. A combined mathematics teaching aid according to claim 1, characterized in that: The straight line where the plurality of connection holes (52) are located passes through the center of the angle measuring frame (2).

6. A combined mathematics teaching aid according to claim 1, characterized in that: A connecting sleeve (41) is fixed to one side of the ruler (4), and the connecting plate (3) is sleeved in the connecting sleeve (41).

7. A combined mathematics teaching aid according to claim 6, characterized in that: The outer side of the connecting sleeve (41) is threadedly connected with a threaded pin (42), and the connection plate and the ruler (4) are fixedly connected under the action of the threaded pin (42).

8. A combined mathematics teaching aid according to claim 1, characterized in that: A length measuring line is provided on the ruler (4); the ruler (4) and the substrate (1) are arranged parallel to each other, and the lengths of the ruler (4) and the substrate (1) are equal.

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