CN211441734U

CN211441734U - Teaching aid for college mathematics teaching

Info

Publication number: CN211441734U
Application number: CN201922223022.5U
Authority: CN
Inventors: 路线
Original assignee: Jilin Teachers Institute of Engineering and Technology
Current assignee: Jilin Teachers Institute of Engineering and Technology
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-08
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a teaching aid for college mathematical education, including the ruler, the last difference fixedly connected with handle and the handle of ruler, the upper surface edge of ruler is provided with the scale mark, spout and standing groove have been seted up respectively to the upper surface of ruler, the left side inner wall of spout rotates and is connected with the fixed point needle, and the inside sliding connection of spout has the circle instrument of drawing, the oval instrument of drawing has been placed to the inside of standing groove. This teaching aid for college mathematical education, through the damping pivot, control fixed point needle and dwang respectively to ninety degrees of the bottom rotation of ruler, a chalk is established to the cover on the chalk cover, the sliding block slides whole instrument of drawing a circle through the spout, confirm the position of drawing a circle instrument through the pointer, utilize the fixed instrument of drawing a circle of fixed establishment on the fixed block, hold the ruler through the handle, use the fixed point needle as the centre of a circle, the fixed point needle is to the distance between the pointer for the radius rotation ruler draws a circle, thereby reached the effect of conveniently drawing a circle.

Description

Teaching aid for college mathematics teaching

Technical Field

The utility model relates to a teaching aid technical field specifically is teaching aid for college mathematics teaching.

Background

The university teaching is a teaching material for the university mathematics courses of the series of university such as the physical science, the computer science, the electronic science and the like of the university, the content of the teaching material mainly comprises unary calculus, linear algebra preliminary, analytic geometry, multivariate function differential science, calculus, line-surface integral, series and generalized integral science, linear algebra and differential equation, and the teaching material meets the basic requirements of the high-grade mathematics courses of the university physical science specialty and the like examined in 1989 of national academy of education and the requirements of the national university student study-in-study unified examination mathematics examination outline formulated in 1998.

The analytic geometry can be divided into plane geometry and space geometry, the plane geometry mainly comprises a triangle, a quadrangle, a fan and the like, the spaces mainly comprise a cuboid, a cylinder, a sphere and the like, the analytic geometry approximately accounts for four questions in an examination and accounts for important scores, the geometry is better scored in the aspect of the whole university mathematics, when a teacher of the university mathematics teaches and analyzes the scores, some figures need to be drawn on a blackboard so as to be better taught, the functions of the existing teaching tools are single, the commonly used drawing tools mainly comprise a triangular ruler, a protractor, a compass and the like, so that the teacher needs to take a lot of teaching aids when in class, the great inconvenience is realized, the existing teaching aids do not have the teaching aids for drawing ellipses, and many teachers draw the ellipses according to the feelings of the teacher and have certain teaching differences, the utility model provides a teaching aid is used in college mathematical education.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a teaching aid is used in college mathematics teaching 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: teaching aid for college mathematical education, including the ruler, the last fixedly connected with handle and handle respectively of table of ruler, the upper surface edge of ruler is provided with the scale mark, spout and standing groove have been seted up respectively to the upper surface of ruler, the left side inner wall of spout rotates and is connected with the fixed point needle, and the inside sliding connection of institute spout has the instrument of drawing a circle, the oval instrument of drawing has been placed to the inside of standing groove, the upper surface of ruler is provided with the storage box of placing the string for drawing ellipse.

Preferably, the fixed point needle passes through the damping pivot and rotates the left side inner wall of connection at the spout, the damping pivot can drive fixed point needle ninety degrees of internal rotation, and its needle point of fixed point needle ninety degrees back internal rotation is located the coplanar with the zero scale of ruler upper surface.

Preferably, draw the circle instrument including sliding at the inside sliding block of spout, the side of sliding block rotates through the damping pivot and is connected with the dwang, the top fixedly connected with chalk cover of dwang, the upper surface difference fixedly connected with pointer and the fixed block of sliding block, the upper surface of fixed block is provided with fixed establishment.

Preferably, the fixing mechanism comprises a fixing rod sleeved inside the fixing block, the bottom end of the fixing rod penetrates through the fixing block, elastic pieces are arranged on the side faces of the fixing rod, a reset rod is arranged on the side faces of the fixing block, and the outer surfaces of the fixing rod and the reset rod are all sleeved with reset springs in an adaptive mode.

Preferably, draw the oval instrument and include the fixed point pole, the quantity of fixed point pole is two, and the equal fixedly connected with magnetite in bottom of two fixed point poles, two fixed point pole be the surface and all seted up the wire tying groove.

Preferably, the surface of the handle is rotatably connected with a rotating sleeve which is convenient to rotate when a circle is drawn, and the rotating sleeve is made of rubber.

Advantageous effects

The utility model provides a teaching aid for college mathematical education possesses following beneficial effect:

1. this teaching aid for college mathematical education, through the damping pivot, control fixed point needle and dwang respectively to ninety degrees of the bottom rotation of ruler, a chalk is established to the cover on the chalk cover, the sliding block slides whole instrument of drawing a circle through the spout, confirm the position of drawing a circle instrument through the pointer, utilize the fixed instrument of drawing a circle of fixed establishment on the fixed block, hold the ruler through the handle, use the fixed point needle as the centre of a circle, the fixed point needle is to the distance between the pointer for the radius rotation ruler draws a circle, thereby reached the effect of conveniently drawing a circle.

2. This teaching aid for college mathematical education adsorbs the fixed point pole on the blackboard through the magnetite, ties the fine rule on the system wire casing on the fixed point pole, a swing joint chalk on the fine rule to the fixed point pole rotates the chalk as the focus and can draw the ellipse, thereby has reached the effect of drawing the ellipse.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic side sectional view of the present invention;

FIG. 4 is a schematic side sectional view of the fixing block of the present invention;

fig. 5 is a schematic side view of the grip of the present invention.

In the figure: 1 ruler, 2 handles, 3 handles, 4 sliding grooves, 5 placing grooves, 6 fixed point needles, 7 storage boxes, 8 damping rotating shafts, 9 sliding blocks, 10 rotating rods, 11 chalk sleeves, 12 pointers, 13 fixed blocks, 14 fixed rods, 15 elastic sheets, 16 reset rods, 17 reset springs, 18 fixed point rods, 19 magnets, 20 wiring grooves and 21 rotating sleeves.

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.

Referring to fig. 1-5, the present invention provides a technical solution: teaching aid is used in college mathematical education, including ruler 1, the upper table of ruler 1 is fixedly connected with handle 2 and handle 3 respectively, and the support of carrying that can be very convenient through handle 2 to and the position of the fixed ruler 1 of accessible handle 2 when drawing, convenient pivoted when being connected with the convenient circle of drawing is changeed in the surface rotation of handle 3 and overlaps 21, changes the material of overlapping 21 and is rubber, and handle 3 and commentaries on classics cover 21 are for convenient fixed and take when drawing the circle.

Ruler 1's upper surface edge is provided with the scale mark, spout 4 and standing groove 5 have been seted up respectively to ruler 1's upper surface, the left side inner wall of spout 4 rotates and is connected with fixed point needle 6, fixed point needle 6 rotates the left side inner wall of connecting at spout 4 through damping pivot 8, damping pivot 8 can drive fixed point needle 6 and is right degree to ruler 1's bottom rotation, and fixed point needle 6 is located the coplanar to its needle point of ruler 1 upper surface's bottom rotation ninety degree back zero scale, damping pivot 8 is provided with two gears, only ninety degree's rotation can be realized, fixed point needle 6 is the circular shape centre of a circle of drawing.

The inside sliding connection of spout 4 draws the circle instrument, draw the circle instrument including sliding at the inside sliding block 9 of spout 4, sliding block 9's side is rotated through damping pivot 8 and is connected with dwang 10, the top fixedly connected with chalk cover 11 of dwang 10, a chalk can be cup jointed in chalk cover 11's inside, be used for drawing circularly on the blackboard, sliding block 9's upper surface fixedly connected with pointer 12 and fixed block 13 respectively, the circular shape radius of drawing is exactly to pointer 12's position fixed point needle 6, the upper surface of fixed block 13 is provided with fixed establishment.

The fixing mechanism comprises a fixing rod 14 sleeved inside a fixing block 13, the bottom end of the fixing rod 14 penetrates through the fixing block 13, an elastic sheet 15 is arranged on the side face of the fixing rod 14, a reset rod 16 is arranged on the side face of the fixing block 13, adaptive reset springs 17 are sleeved on the outer surfaces of the fixing rod 14 and the reset rod 16, and the reset springs 17 are mainly used for elastic reset of the fixing rod 14 and the reset rod 16.

Placing groove 5's inside has been placed and has been painted oval instrument, paint oval instrument and include fixed point pole 18, the quantity of fixed point pole 18 is two, and the equal fixedly connected with magnetite 19 in bottom of two fixed point poles 18, present blackboard inside all is provided with iron plate, fixed point pole 18 can adsorb on the blackboard through magnetite 19, it is oval just can be very convenient drawing as the focus to use two fixed point poles 18, be the surface of two fixed point poles 18 and all seted up system wire casing 20, the upper surface of ruler 1 is provided with places the storage box 7 of painting oval string.

The working principle is as follows: when a circle needs to be drawn in the teaching process, the fixed point needle 6 and the rotating rod 10 are respectively controlled to rotate ninety degrees towards the bottom of the ruler 1 through the damping rotating shaft 8, a piece of chalk is sleeved on the chalk sleeve 11, the sliding block 9 slides the whole circle drawing tool through the sliding groove 4, the position of the circle drawing tool is determined through the pointer 12, the fixed rod 14 on the fixed block 13 is pressed down, the fixed rod 14 is clamped inside the fixed block 13 through the elastic piece 15, the bottom end of the fixed rod 14 can be contacted and clamped with the upper surface of the ruler 1, the ruler 1 is held through the handle 3, the distance between the fixed point needle 6 and the pointer 12 is taken as the radius to rotate the ruler 1 to draw the circle, the reset rod 16 is pressed down when different circles need to be drawn, the fixed rod 14 returns to the original position and is not clamped with the ruler 1, a new circle is drawn through the sliding groove 4 and the pointer 12, the fixed point rod 18 is adsorbed on the blackboard through the magnet, a thin line is tied on a line tying groove 20 on the fixed point rod 18, a piece of chalk is movably connected to the thin line, and the chalk is rotated by taking the fixed point rod 18 as a focus to draw an ellipse.

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. University is teaching aid for mathematical education, including ruler (1), its characterized in that: the upper surface of ruler (1) is gone up fixedly connected with handle (2) and handle (3) respectively, the upper surface edge of ruler (1) is provided with the scale mark, spout (4) and standing groove (5) have been seted up respectively to the upper surface of ruler (1), the left side inner wall of spout (4) is rotated and is connected with fixed point needle (6), and the inside sliding connection of spout (4) has the circle instrument of drawing, the oval instrument of drawing has been placed to the inside of standing groove (5), the upper surface of ruler (1) is provided with places and draws storage box (7) of oval string.

2. A teaching aid for university mathematics as claimed in claim 1, wherein: fixed point needle (6) rotate through damping pivot (8) and connect the left side inner wall in spout (4), damping pivot (8) can drive fixed point needle (6) to the bottom of ruler (1) ninety degrees of rotation, and fixed point needle (6) are located the coplanar to its needle point and the zero scale of ruler (1) upper surface behind the bottom of ruler (1) ninety degrees of rotation.

3. A teaching aid for university mathematics as claimed in claim 1, wherein: draw circle instrument including slide at inside sliding block (9) of spout (4), the side of sliding block (9) is rotated through damping pivot (8) and is connected with dwang (10), the top fixedly connected with chalk cover (11) of dwang (10), the upper surface difference fixedly connected with pointer (12) and fixed block (13) of sliding block (9), the upper surface of fixed block (13) is provided with fixed establishment.

4. A teaching aid for university mathematics as claimed in claim 3, wherein: the fixing mechanism comprises a fixing rod (14) which is sleeved inside the fixing block (13), the bottom end of the fixing rod (14) penetrates through the fixing block (13), an elastic sheet (15) is arranged on the side face of the fixing rod (14), a reset rod (16) is arranged on the side face of the fixing block (13), and reset springs (17) of the adaptation are sleeved on the outer surfaces of the fixing rod (14) and the reset rod (16).

5. A teaching aid for university mathematics as claimed in claim 1, wherein: draw oval instrument including fixed point pole (18), the quantity of fixed point pole (18) is two, and the equal fixedly connected with magnetite (19) in bottom of two fixed point poles (18), two fixed point pole (18) be the surface and all seted up and be a wire casing (20).

6. A teaching aid for university mathematics as claimed in claim 1, wherein: the surface of the handle (3) is rotatably connected with a rotating sleeve (21) which is convenient to rotate when a circle is drawn, and the rotating sleeve (21) is made of rubber.