CN113002221A

CN113002221A - Be applied to mathematics teaching of education and teaching with supplementary teaching device

Info

Publication number: CN113002221A
Application number: CN202110371785.3A
Authority: CN
Inventors: 虎思远
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-06-22

Abstract

The invention discloses an auxiliary teaching device for mathematical teaching, which is applied to education and teaching and comprises an adjusting component and a driving component, wherein the adjusting component comprises a protractor, a fixed pipe is fixedly arranged in the middle of the position of the center point of the protractor, a compass supporting leg is rotatably arranged on the surface of the fixed pipe, one end of the compass supporting leg is movably provided with a sleeve, the inner wall of the sleeve is movably provided with a holding pipe, and the inner wall of the holding pipe is movably provided with a chalk end. According to the invention, the angle of the scale mark of the protractor where the colored line is located is firstly adjusted, then the bracket is held by a single hand and is arranged perpendicular to the plane of the blackboard, the chalk head is attached to the blackboard, the drive rod is driven by the thumb to move through the drive plate, so that the drive rod is matched with the drive ring and the connecting block to drive the protractor to rotate, the protractor drives the chalk head to complete circle drawing operation through the compass support leg and the sleeve, the operation is simple, and the operation can be completed by a single hand, thereby achieving the purpose of convenience in use.

Description

Be applied to mathematics teaching of education and teaching with supplementary teaching device

Technical Field

The invention relates to the technical field of teaching aids, in particular to an auxiliary teaching device for mathematical teaching, which is applied to education and teaching.

Background

The teaching aid is a general term of various instruments used for enabling students to visually and vividly understand teaching contents and instruments used by teachers during teaching. The teaching aid is called for short. The teaching aid can improve the learning interest of students, enrich perceptual knowledge, help to form clear concepts, and when developing the geometric teaching of the observation ability and thinking ability of students, compasses and protractors are indispensable teaching aids.

However, in the prior art, in actual use, a teacher needs to hold the compasses with two hands, one support leg is tightly extruded on a blackboard, and the other support leg performs circular motion with a small margin.

Disclosure of Invention

The invention aims to provide an auxiliary teaching device for mathematical education applied to education and teaching, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: comprises an adjusting component and a driving component, wherein the adjusting component comprises an angle gauge, a fixed pipe is fixedly arranged at the middle part of the central point position of the angle gauge, the surface of the fixed pipe is rotatably provided with a compass supporting leg, one end of the compass supporting leg is movably provided with a sleeve, the inner wall of the sleeve is movably provided with a holding pipe, the inner wall of the holding pipe is movably provided with a chalk end, the top of the angle gauge is movably provided with a movable plate, the top of the movable plate is movably provided with a fixed rod, the top of the fixed rod is fixedly provided with a sucker, the driving component comprises a connecting block, the connecting block is fixedly arranged at the bottom of the angle gauge, the bottom of the connecting block is fixedly provided with a driving ring, the inner wall of the driving ring is movably provided with a driving rod, the surface of the driving ring is movably provided with, the drive rod activity runs through and extends to the bottom of support, the bottom of drive rod is fixed and is provided with the drive plate.

Preferably, the quantity of compasses supporting leg is two, and two compasses supporting legs crisscross setting around each other, two the one end of compasses supporting leg opposite face all is equipped with coloured lines, the sheathed tube surface articulates through articulated seat has the auxiliary rod, the one end that the sleeve pipe position was kept away from to the auxiliary rod rotates and is connected with the locating lever, and locating lever fixed connection is at the preceding side of protractor, the mutual parallel arrangement of auxiliary rod and compasses supporting leg, two the compasses supporting leg and two the auxiliary rod is crisscross setting around each other all, compasses supporting leg, protractor and auxiliary rod are the transparent material component, the protractor central point is 10cm along the distance of line between coloured lines and the perpendicular central line of chalk end, the inside of protractor is equipped with the scale mark.

Preferably, the sheathed tube surface is the rectangle structure, and sheathed tube inner wall and add and hold the pipe and be circular structure, add the first damping spring of bottom fixedly connected with on holding the pipe surface, and first damping spring fixed connection is in sheathed tube bottom, add the bottom of holding the pipe and seted up the through-hole.

Preferably, the fixed ring of the preceding side fixedly connected with in the corresponding dead lever position of fly leaf, the surface in the corresponding fixed ring position of dead lever is seted up flutedly, and fixed ring rotates the inner wall of connection at the recess, the preceding side fixedly connected with connecting strip in the corresponding fixed pipe position of protractor, the one end fixedly connected with fixed lid in protractor position is kept away from to the connecting strip, and the fixed lid activity cup joints at the top on fixed pipe surface, the equal vertical coplane setting in mid point of dead lever, the mid point of chalk head and the mid point of actuating lever.

Preferably, the inner wall of the position, corresponding to the fixed cover, of the fixed pipe and the inner wall of the fixed cover are both arranged in a rough mode, and the front side end of the compass supporting leg and the rear side end of the fixed cover are both arranged in a rough mode.

Preferably, the holding tank has all been seted up to the inner wall of the corresponding drive ring of protective tube and connecting block position, the internal diameter of the corresponding drive ring position of holding tank and the diameter looks adaptation of drive ring, the internal diameter of the corresponding connecting block position of holding tank and the diameter looks adaptation of connecting block week side place circle, the radian of connecting block and the radian looks adaptation of drive ring, the internal diameter of the corresponding drive ring position of holding tank is greater than the internal diameter of the corresponding connecting block position of holding tank.

Preferably, the handheld piece of bottom fixedly connected with of support inner wall, other fixedly connected with gag lever post is equallyd divide at the top at drive plate both ends, spacing pipe has been cup jointed in the surface activity of gag lever post, and spacing pipe fixed connection is on the surface of support, the top fixedly connected with stopper of gag lever post, the bottom fixedly connected with third damping spring of stopper, and third damping spring fixed connection is at the top of spacing pipe, the thread groove has all been seted up on the inner wall of drive ring and the surface of actuating lever, and two thread grooves mesh mutually.

Preferably, the fixed auxiliary assembly that is equipped with of preceding side of protractor, auxiliary assembly includes the draw-in groove, easily gets mouthful and spout, the draw-in groove with easily get the mouth and all set up the one end in protractor front end bottom, the middle part at protractor front end is seted up to the spout, and the spout is located position between two compasses supporting legs, the inside and the inside of easily getting the mouth of draw-in groove are linked together.

Preferably, the inner wall of the clamping groove is movably clamped with a clamping block, one end of the clamping block, corresponding to the position of the easy-to-take opening, is provided with an easy-to-take groove, the middle of the clamping block is fixedly connected with a sliding block, and the width of the sliding block is matched with the width of the sliding groove.

Preferably, the rear side end of the protractor and the rear side end of the whole device are respectively arranged in a vertical coplanar manner, a movable groove is formed in the top of the protractor corresponding to the position of the movable plate, the inner wall of the movable groove is movably connected with the surface of the movable plate, a second damping spring is fixedly connected to the bottom of the movable plate, and the second damping spring is fixedly connected to the inner wall of the movable groove.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the angle of the scale mark of the protractor where the colored line is located is firstly adjusted, then the bracket is held by a single hand and is arranged perpendicular to the plane of the blackboard, the chalk head is attached to the blackboard, the drive rod is driven by the thumb to move through the drive plate, so that the drive rod is matched with the drive ring and the connecting block to drive the protractor to rotate, the protractor drives the chalk head to complete the circle drawing operation through the compass support leg and the sleeve, the operation is simple and can be completed by a single hand, and the purpose of convenience in use is realized;

2. when a circle needs to be drawn, the fixture block is taken out from the inner wall of the clamping groove through the easy-to-draw port matched with the easy-to-draw groove, the slider is inserted into the inner wall of the sliding groove, the fixture block is slid, two ends of the fixture block are respectively and tightly attached to the surface of the auxiliary rod until the colored lines move to the target scale mark position of the protractor, the compasses supporting leg is positioned through the fixing cover, the angles of the two colored lines are completely the same, the situation that the radian of the two semicircular circles is not equal when the protractor rotates by 180 degrees is not worried, the fixture block is placed back into the clamping groove when the two circles need to be drawn, the positions of the protractor scale marks where the two colored lines are located are respectively adjusted according to needs, the drive movement is carried out through the handheld support, and the drive plate rotates by 360 degrees to obtain two concentric circles.

Drawings

FIG. 1 is a front view of an overall structure of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

FIG. 2 is a front sectional view of the overall structure of an auxiliary teaching device for teaching mathematics applied to education and teaching of the present invention;

FIG. 3 is an enlarged view of a structure at A in FIG. 2 of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

FIG. 4 is an enlarged view of a structure at B in FIG. 2 of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

FIG. 5 is a front sectional view of a driving assembly of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

FIG. 6 is a sectional view of a connection block structure of an auxiliary teaching device for teaching mathematics applied to education according to the present invention;

FIG. 7 is a sectional plan view of a casing structure of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

FIG. 8 is a block diagram of an auxiliary teaching device for teaching mathematics applied to education and teaching according to the present invention;

fig. 9 is a front sectional view of a protractor structure of an auxiliary teaching device for mathematical education applied to educational teaching.

In the figure: 1. an adjustment assembly; 101. a protractor; 102. a fixed tube; 103. compasses support legs; 104. a sleeve; 105. a holding tube; 106. a chalk end; 107. a movable plate; 108. fixing the rod; 109. a suction cup; 110. colored lines; 111. a first damping spring; 112. a through hole; 113. an auxiliary lever; 114. positioning a rod; 115. a fixing ring; 116. a connecting strip; 117. a fixed cover; 118. a movable groove; 119. a second damping spring; 2. a drive assembly; 201. connecting blocks; 202. a drive coil; 203. a drive rod; 204. a protective tube; 205. a support; 206. a drive plate; 207. accommodating grooves; 208. a hand-held block; 209. a limiting rod; 210. a limiting pipe; 211. a limiting block; 212. a third damping spring; 3. an auxiliary component; 301. a card slot; 302. the mouth is easy to take; 303. a clamping block; 304. the groove is easy to take; 305. a slider; 306. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: the chalk dust-proof and dust-proof device comprises an adjusting assembly 1 and a driving assembly 2, wherein the adjusting assembly 1 comprises a protractor 101, a fixed pipe 102 is fixedly installed in the middle of the central point of the protractor 101, a compass supporting leg 103 is rotatably connected to the surface of the fixed pipe 102, one end, far away from the fixed pipe 102, of the compass supporting leg 103 is hinged to a sleeve 104 through a hinged seat, a clamping pipe 105 is movably connected to the inner wall of the sleeve 104, a chalk end 106 is clamped on the inner wall of the clamping pipe 105, a movable plate 107 is movably arranged at the top of the protractor 101, a fixed rod 108 is movably arranged at the front side end of the top of the movable plate 107, a sucker 109 is fixedly installed at the top of the fixed rod 108, the driving assembly 2 comprises a connecting block 201, the connecting block 201 is fixedly installed at the bottom of the protractor 101, a driving ring 202 is, the surface of the protective tube 204 is fixedly provided with a bracket 205, the driving rod 203 movably penetrates through and extends to the bottom of the bracket 205, and the bottom of the driving rod 203 is fixedly provided with a driving plate 206.

The quantity of compasses supporting leg 103 is two, and two mutual crisscross settings around compasses supporting leg 103, the one end of two compasses supporting leg 103 opposite faces all is equipped with coloured lines 110, the surface of sleeve pipe 104 articulates through articulated seat has auxiliary rod 113, the one end that sleeve pipe 104 position was kept away from to auxiliary rod 113 is rotated and is connected with locating lever 114, and locating lever 114 fixed mounting is at the preceding side of protractor 101, auxiliary rod 113 and the mutual parallel arrangement of compasses supporting leg 103, two compasses supporting legs 103 and two all crisscross settings around each other of auxiliary rod 113, compasses supporting leg 103, protractor 101 and auxiliary rod 113 are the transparent material component, protractor 101 central point is 10cm along the distance of line between coloured lines 110 and the perpendicular central line of chalk end 106, protractor 101's inside is equipped with the scale mark.

The surface of sleeve pipe 104 is the rectangle structure, and the inner wall of sleeve pipe 104 and add and hold pipe 105 and be circular structure, the bottom fixed mounting who adds and hold the pipe 105 surface has first damping spring 111, and first damping spring 111 fixed mounting is in the bottom of sleeve pipe 104, add and hold the bottom of pipe 105 and seted up through-hole 112, can conveniently be ejecting at the inside cracked chalk head 106 of holding pipe 105 with the card through setting up through-hole 112, through setting up first damping spring 111 and adding the inside of holding pipe 105 activity at sleeve pipe 104, can make when drawing the circle, can apply certain pressure to chalk head 106 through quantity protractor 101, make chalk head 106 closely laminate the surface at the blackboard well, be favorable to drawing comparatively obvious circle.

A fixed ring 115 is fixedly mounted at the front side end of the movable plate 107 corresponding to the position of the fixed rod 108, a groove is formed in the surface of the fixed rod 108 corresponding to the position of the fixed ring 115, the fixed ring 115 is rotatably connected to the inner wall of the groove, a connecting strip 116 is fixedly mounted at the front side end of the protractor 101 corresponding to the position of the fixed tube 102, a fixed cover 117 is fixedly mounted at one end of the connecting strip 116 far away from the position of the protractor 101, the fixed cover 117 is movably sleeved at the top of the surface of the fixed tube 102, and the middle point of the fixed rod 108, the middle point of the chalk.

The inner wall of the fixed pipe 102 corresponding to the position of the fixed cover 117 and the inner wall of the fixed cover 117 are both arranged roughly, the front side end of the compass supporting leg 103 and the rear side end of the fixed cover 117 are both arranged roughly, and the fixed cover 117 is arranged to prevent the compass supporting leg 103 from accidentally rotating with the fixed pipe 102 when drawing a circle, so that the situation of drawing the circle out of round can be avoided.

The inner wall at the corresponding drive ring 202 of protective tube 204 and connecting block 201 position has all seted up holding tank 207, the internal diameter at the corresponding drive ring 202 position of holding tank 207 and the diameter looks adaptation of drive ring 202, the internal diameter at the corresponding connecting block 201 position of holding tank 207 and the diameter looks adaptation of the side place circle all around of connecting block 201, the radian of connecting block 201 and the radian looks adaptation of drive ring 202, the internal diameter at the corresponding drive ring 202 position of holding tank 207 is greater than the internal diameter at the corresponding connecting block 201 position of holding tank 207, through setting up holding tank 207, and the internal diameter at the corresponding drive ring 202 position of holding tank 207 is greater than the internal diameter at the corresponding connecting block 201 position of holding tank 207, make holding tank 207 can restrict drive ring 202 in the bottom of holding tank 207 inner wall, prevent that drive ring 202 from taking off from the bottom of holding tank 207.

The bottom fixed mounting of support 205 inner wall has handheld piece 208, the top at drive plate 206 both ends is equallyd divide do fixed mounting have gag lever post 209, spacing pipe 210 has been cup jointed in the surface activity of gag lever post 209, and spacing pipe 210 fixed mounting is on the surface of support 205, the top fixed mounting of gag lever post 209 has stopper 211, the bottom fixed mounting of stopper 211 has third damping spring 212, and third damping spring 212 fixed mounting is at the top of spacing pipe 210, the thread groove has all been seted up on the inner wall of drive ring 202 and the surface of drive rod 203, and two thread grooves mesh mutually.

The fixed auxiliary assembly 3 that is equipped with of preceding side of protractor 101, auxiliary assembly 3 includes draw-in groove 301, easily gets a mouth 302 and spout 306, and draw-in groove 301 and easily get a mouth 302 and all set up the one end in protractor 101 preceding side bottom, and the middle part in protractor 101 preceding side is seted up to spout 306, and spout 306 is located position between two compasses supporting legs 103, and the inside of easily getting a mouth 302 of draw-in groove 301 are linked together.

A clamping block 303 is movably clamped on the inner wall of the clamping groove 301, an easy-to-take groove 304 is formed in one end, corresponding to the position of the easy-to-take opening 302, of the clamping block 303, a sliding block 305 is fixedly mounted in the middle of the clamping block 303, and the width of the sliding block 305 is matched with that of the sliding groove 306.

The rear side end of the protractor 101 and the rear side end of the whole device are respectively arranged vertically and coplanar, the top of the protractor 101 corresponding to the position of the movable plate 107 is provided with a movable groove 118, the inner wall of the movable groove 118 is movably connected with the surface of the movable plate 107, the bottom of the movable plate 107 is fixedly provided with a second damping spring 119, and the second damping spring 119 is fixedly arranged on the inner wall of the movable groove 118.

The working principle is as follows: when the colored chalk is used, chalk is inserted into the holding pipe 105 for fixing, then the compasses support leg 103 is rotated to adjust the position of the colored line 110 on the scale mark of the protractor 101, and the radius of a circle to be drawn is determined according to the formula: y/x is sin theta, wherein y is the distance between the central point of the protractor 101 and the connecting line between the colored line 110 and the vertical central line of the chalk end 106, theta is the included angle between the vertical line of the central point of the protractor 101 and the colored line 110, and x is the radius of the circle to be drawn, because the radius x of y and the circle to be drawn is known, the angle of theta can be calculated according to the formula y/x, so that the auxiliary rod 113 is adjusted to the position of the corresponding scale line on the protractor 101, at the moment, the fixing cover 117 is sleeved on the surface of the fixing pipe 102, because the inner wall of the fixing pipe 102 corresponding to the position of the fixing cover 117 and the inner wall of the fixing cover 117 are both roughly arranged, the front side end of the compass support leg 103 and the rear side end of the fixing cover 117 are both roughly arranged, the compass support leg 103 can be limited from being accidentally rotated by the fixing cover 117 when the fixing cover 117 is sleeved on the surface of the fixing, therefore, the situation of out-of-round drawing caused by the accidental rotation of the compass supporting leg 103 is avoided, the bracket 205 is held by one hand, a user holds the holding block 208, the connecting line between the driving rod 203 and the fixed rod 108 is perpendicular to the plane of the blackboard, meanwhile, the suction cup 109 is adsorbed on the surface of the blackboard, the root of the thumb is propped against the driving plate 206, the suction cup 109 is propped against the surface of the blackboard through the support 205 matched with the protective tube 204, the driving ring 202 and the connecting block 201, the movable plate 107 compresses the second damping spring 119 in the movable groove 118 until the top of the chalk end 106 is tightly jointed with the surface of the blackboard, pressure is slightly applied at the moment, the chalk end 106 drives the first damping spring 111 to stretch through the holding tube 105, so that the chalk end 106 can be tightly jointed with the surface of the blackboard, the trace of a circle drawn is more obvious, and the user holds the hand tightly at the moment, and the thumb of the user drives the driving plate 206 to move towards the position of the bracket 205, and the driving plate 206 drives the driving rod 203 to move on the inner wall of the driving ring 202, because the inner wall of the driving ring 202 and the surface of the driving rod 203 are both provided with thread grooves, and the two thread grooves are engaged, when the driving rod 203 moves on the inner wall of the driving ring 202, the driving ring 202 is driven to rotate, and further the driving ring 202 drives the protractor 101 to rotate through the connecting block 201, because the midpoint of the fixing rod 108, the midpoint of the chalk head 106 and the midpoint of the driving rod 203 are vertically and coplanarly arranged, when the protractor 101 rotates, the compass supporting leg 103 is used for driving the two chalk heads 106 to rotate by matching with the sleeve 104, namely the protractor 101 can complete the circle drawing operation only by rotating 180 degrees, so that the device only needs to adjust the angle of the graduation line of the protractor 101 where the colored line 110 in the compass 103 is located, the fixing cover 117 is sleeved on the surface of the fixing tube 102 to position the compass supporting leg 103, the hand-held block 208 on the inner wall of the bracket 205 is held by one hand, the connecting line between the driving rod 203 and the fixing rod 108 is perpendicular to the plane of the blackboard, the chalk head 106 is tightly attached to the plane of the blackboard, the driving rod 203 is driven by the driving plate 206 to move by using a thumb, the driving rod 203 is further matched with the driving ring 202 and drives the protractor 101 to rotate by the connecting block 201, the protractor 101 drives the chalk head 106 to complete the circle drawing operation by the compass supporting leg 103 and the sleeve 104, the operation is simple and can be completed by one hand, so that the purpose of convenient use is realized, when a circle needs to be drawn, the fixture block 303 is taken out from the inner wall of the clamping groove 301 by matching the easy-taking opening 302 with the easy-taking groove 304, the sliding block 305 is inserted in the inner wall of the sliding groove 306, the fixture block 303 is slid, and, until the colored lines 110 move to the target scale mark position of the protractor 101, the compasses supporting leg 103 is positioned through the fixing cover 117, the angles of the two colored lines 110 are completely the same, the situation that the radian of two semi-circles is not equal when the protractor 101 rotates 180 degrees is not worried, when two circles need to be drawn, the clamping block 303 is placed back into the clamping groove 301, the positions of the scale marks of the protractor 101 where the two colored lines 110 are located are respectively adjusted according to needs, the driving plate 206 is driven to move through the handheld bracket 205, the protractor 101 rotates 360 degrees to obtain two concentric circles, the sleeve 104 is always arranged in parallel with the fixing rod 108 and the driving rod 203 through the arrangement of the auxiliary rod 113 and the cooperation of the auxiliary rod 113 with the compasses supporting leg 103 according to a parallelogram rule, namely when the fixing rod 108 and the driving rod 203 are both perpendicular to the plane of the blackboard, the sleeve 104 and the chalk head 106 are also perpendicular to the, therefore, the error of the picture can be reduced, when the user does not extrude the driving plate 206 any more, the driving plate 206 can be restored to the initial position under the action of the reset stretching of the third damping spring 212 by arranging the limiting rod 209, the limiting tube 210, the limiting block 211 and the third damping spring 212, so that the driving plate 206 can be used for multiple times, as the rear side end of the protractor 101 and the rear side end of the whole device are respectively arranged in a vertical coplanar manner, the device can also be used as an angle measuring tool, and the using methods are two, one is to attach the device to the surface of the blackboard, and to enable the circle center of the fixed tube 102 to be placed at the focus of the included angle, the angle of the included angle is visually observed, the other is to attach the device to the surface of the blackboard, and to enable the circle center of the fixed tube 102 to be placed at the focus of the included angle, the angles of the two colored lines 110 are adjusted, so that the two, the angle of the included angle can be calculated according to the angle of the scale mark on the protractor 101 where the colored line 110 is located.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 be applied to mathematics teaching with supplementary teaching device which characterized in that: the multifunctional angle gauge comprises an adjusting assembly (1) and a driving assembly (2), wherein the adjusting assembly (1) comprises an angle gauge (101), a fixed fixing pipe (102) is fixedly arranged at the middle part of the central point position of the angle gauge (101), a compass supporting leg (103) is arranged on the surface of the fixing pipe (102) in a rotating mode, a sleeve (104) is movably arranged at one end of the compass supporting leg (103), a holding pipe (105) is movably arranged on the inner wall of the sleeve (104), a chalk end (106) is movably arranged on the inner wall of the holding pipe (105), a movable plate (107) is movably arranged at the top of the angle gauge (101), a fixing rod (108) is movably arranged at the top of the movable plate (107), a sucking disc (109) is fixedly arranged at the top of the fixing rod (108), the driving assembly (2) comprises a connecting block (201), and the connecting block (201) is fixedly, the fixed drive ring (202) that is provided with in bottom of connecting block (201), the inner wall activity of drive ring (202) is provided with actuating lever (203), the surface activity of drive ring (202) is provided with protecting tube (204), the fixed surface of protecting tube (204) is provided with support (205), the bottom that extends to support (205) is run through in actuating lever (203) activity, the fixed drive plate (206) that is provided with in bottom of actuating lever (203).

2. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the compasses supporting legs (103) are two in quantity, and two compasses supporting legs (103) are arranged in a staggered manner from front to back, two colored lines (110) are arranged at one end of the opposite surface of each compasses supporting leg (103), an auxiliary rod (113) is hinged to the surface of the sleeve (104) through a hinged seat, one end, far away from the position of the sleeve (104), of the auxiliary rod (113) is rotatably connected with a positioning rod (114), the positioning rod (114) is fixedly connected to the front side end of the protractor (101), the auxiliary rod (113) and the compasses supporting legs (103) are arranged in a parallel manner, the compasses supporting legs (103) and the auxiliary rods (113) are arranged in a staggered manner from front to back, the compasses (103), the protractor supporting legs (101) and the auxiliary rods (113) are transparent material components, the distance between the central point of the protractor (101) along the connecting line between the colored lines (110) and the vertical central line of the chalk, and scale marks are arranged inside the protractor (101).

3. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the surface of sleeve pipe (104) is the rectangle structure, and the inner wall of sleeve pipe (104) and add and hold pipe (105) and be circular structure, add the first damping spring (111) of the bottom fixedly connected with on holding pipe (105) surface, and first damping spring (111) fixed connection is in the bottom of sleeve pipe (104), add the bottom of holding pipe (105) and seted up through-hole (112).

4. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the utility model discloses a chalk powder filling machine, including portable plate (107), the preceding side end fixedly connected with of corresponding dead lever (108) position of dead lever (107) is fixed ring (115), the surface of the corresponding fixed ring (115) position of dead lever (108) is seted up flutedly, and fixed ring (115) rotate the inner wall of connection at the recess, the preceding side end fixedly connected with connecting strip (116) of the corresponding fixed pipe (102) position of protractor (101), one end fixedly connected with fixed lid (117) of protractor (101) position is kept away from in connecting strip (116), and fixed lid (117) activity cup joints the top on fixed pipe (102) surface, the equal vertical coplane setting of midpoint of dead lever (108), the midpoint of chalk end (106) and the midpoint of actuating lever (203).

5. An auxiliary teaching device for teaching mathematics applied to education and teaching as claimed in claim 4, wherein: the inner wall of the position, corresponding to the fixing cover (117), of the fixing pipe (102) and the inner wall of the fixing cover (117) are both arranged in a rough mode, and the front side end of the compass supporting leg (103) and the rear side end of the fixing cover (117) are both arranged in a rough mode.

6. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: accommodation groove (207) have all been seted up to the inner wall of the corresponding drive ring of protective tube (204) position (202) and connecting block (201), the internal diameter of the corresponding drive ring of accommodation groove (207) position (202) and the diameter looks adaptation of drive ring (202), the internal diameter of the corresponding connecting block of accommodation groove (207) position (201) and the diameter looks adaptation of connecting block (201) week side place circle, the circular arc degree of connecting block (201) and the circular arc degree looks adaptation of drive ring (202), the internal diameter of the corresponding drive ring of accommodation groove (207) position (202) is greater than the internal diameter of the corresponding connecting block of accommodation groove (207) position (201).

7. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the handheld piece of bottom fixedly connected with (208) of support (205) inner wall, do not fixedly connected with gag lever post (209) are equallyd divide to the top at drive plate (206) both ends, spacing pipe (210) have been cup jointed in the surface activity of gag lever post (209), and spacing pipe (210) fixed connection is on the surface of support (205), the top fixedly connected with stopper (211) of gag lever post (209), the bottom fixedly connected with third damping spring (212) of stopper (211), and third damping spring (212) fixed connection is at the top of spacing pipe (210), the thread groove has all been seted up on the inner wall of drive ring (202) and the surface of actuating lever (203), and two thread grooves mesh mutually.

8. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the fixed auxiliary assembly (3) that is equipped with of preceding side of protractor (101), auxiliary assembly (3) include draw-in groove (301), easily get mouthful (302) and spout (306), the one end in protractor (101) front side bottom is all seted up to draw-in groove (301) and easily get mouthful (302), the middle part in protractor (101) front side is seted up in spout (306), and spout (306) are located the position between two compasses supporting legs (103), the inside of draw-in groove (301) is linked together with the inside of easily getting mouthful (302).

9. An auxiliary teaching device for mathematics teaching applied to education and teaching of claim 8, characterized in that: the inner wall activity joint of draw-in groove (301) has fixture block (303), the one end that fixture block (303) corresponding easily got mouthful (302) position has been seted up and has been easily got groove (304), the middle part fixedly connected with slider (305) of fixture block (303), the width of slider (305) and the width looks adaptation of spout (306).

10. An auxiliary teaching device for mathematics teaching applied to education and teaching as claimed in claim 1, characterized in that: the rear side end of the protractor (101) and the rear side end of the whole device are respectively vertically arranged in a coplanar manner, a movable groove (118) is formed in the top of the protractor (101) corresponding to the position of the movable plate (107), the inner wall of the movable groove (118) is movably connected with the surface of the movable plate (107), a second damping spring (119) is fixedly connected to the bottom of the movable plate (107), and the second damping spring (119) is fixedly connected to the inner wall of the movable groove (118).