WO2014121698A1

WO2014121698A1 - Polygonal dynamic demonstration teaching aid

Info

Publication number: WO2014121698A1
Application number: PCT/CN2014/071295
Authority: WO
Inventors: 胡书华
Original assignee: Hu Shuhua
Priority date: 2013-02-06
Filing date: 2014-01-23
Publication date: 2014-08-14
Also published as: CN103093668A; CN103093668B; SG11201508257SA

Abstract

A polygonal dynamic demonstration teaching aid, comprising a plurality of rulers (1); each ruler is provided with a through slot (11) in the middle along the length of the ruler; the through slot (11) is installed with a plurality of sliders (2, 2') slidable in the through slot (11); a slider (2, 2') is provided with a connection peg (25, 25') at the top and a socket hole (26, 26') at the bottom mating with a connection peg (25, 25'). The rulers (1) can be stacked, and the sliders (2, 2') thereof can be superimposed on one another and combined together, so that the rulers (1) can be assembled into various kinds of polygons. During demonstration of the teaching aid, the upper and lower rulers (1) can be stacked or separated as desired so as to form various kinds of intuitive polygons. The rulers (1) feature simple and time-saving assembly and disassembly and convenient usage, can reduce the plotting workload of a user or a teacher, and can also cultivate the ability of students in thinking, association and analogy, and observation, spark the imagination and arouse the interest of students in learning geometry.

Description

A polygon dynamic demonstration teaching aid

Technical field

The invention relates to a geometric dynamic demonstration teaching aid, in particular to a polygonal dynamic demonstration teaching aid.

Background technique

At present, in geometry teaching, teaching aids generally have rulers, triangles, etc. In teaching drawing, teachers can only draw the graphics they need step by step on the basis of online, the drawing process is cumbersome and not intuitive, the teacher must Paintings must be talked about, very busy, and at the same time can not better cultivate students' association, analogy, observation and hands-on ability, which will inevitably affect the effect of geometric teaching. Moreover, they have many drawbacks: they are inconvenient to carry, they are not convenient to use, and more importantly, they are single in function.

On the other hand, the existing geometric aids can visually demonstrate the geometry, but the graphics that can be demonstrated are relatively small and the scope of use is relatively narrow.

Moreover, some geometric teaching aids are connected by butterfly bolts or nuts. Assembly and disassembly are troublesome and take a long time, which affects the consistency of the teaching demonstration.

technical problem

The technical problem to be solved by the present invention is to provide a polygon dynamic demonstration teaching tool, which can visually and dynamically demonstrate the polygons and related theorems frequently used in geometric teaching, and can dynamically display more geometric figures, and the assembly and disassembly is simple and time-saving. Easy to use.

Technical solution

In order to solve the above technical problem, the present invention provides a polygonal dynamic demonstration teaching aid, which comprises a plurality of rulers, a through groove is arranged along the longitudinal direction of each of the rulers, and a plurality of sliders are installed in the through slot, and the slider can be Sliding in the through slot, a plug post is arranged at the top of the slider, and a sleeve hole is matched with the plug post at the bottom of the slider, and the ruler can be stacked on top of each other, and the sliders can be stacked on top of each other. Together, a plurality of rulers can be combined into various polygonal shapes.

Further, a step surface, a guiding groove and a bottom concave surface are respectively recessed into the ruler on both sides of the through groove, the step surface is lower than the top surface of the straight ruler, the bottom concave surface is lower than the bottom surface of the straight ruler, and the guiding groove is lower than the step The surface is away from the through groove; a plurality of vertical grooves are recessed in a side of the guide groove on one side of the guiding groove.

Further, the slider further comprises an upper pressing block which can be fastened to each other and is pressed down quickly. The upper pressing block is arranged on the step surface and the guiding groove on both sides of the through groove, and can slide in the guiding groove, and the lower pressing block is arranged at The bottom concave surface on both sides of the groove is arranged to slide on the bottom concave surface; a guiding rib is convexly arranged on the bottom surface of the upper pressing block, and the guiding rib cooperates with the guiding groove.

Further, a bead hole is respectively recessed on both sides of the upper pressing block, and a spring and a top end beaded ball are mounted in the top bead hole, and the top bead can slide in the bead hole, and the ball of the top bead can be higher The side of the upper block is pressed and can be stopped on the surface of the vertical groove.

Further, a magnetic guiding component is arranged on the top surface of the slider, and a magnetic piece is arranged on the bottom surface of the sliding block. The magnetic sliding force of the magnetic guiding component and the magnetic piece can superimpose the sliders of different rulers on top of each other. Together; the magnetically fastened fasteners can fasten the upper pressing block, press down and the magnetic sheets together.

Further, the insertion post is protruded in the middle of the top surface of the lower pressing block, and the plug column is connected in series with the upper pressing block and the magnetic guiding fastening component, and is higher than the top surface of the magnetic guiding component; the socket is arranged under the pressing The bottom of the block is located below the plug post, and the socket can be matched with the plug post of the other ruler slider.

Further, the end of the plug post is provided with a plug structure, and a socket structure that can cooperate with the plug structure is disposed in the socket.

Further, the plug structure is an annular groove disposed at an end of the plug post; the socket structure includes two blocks and a fastener, and the two blocks are respectively disposed on two sides of the sleeve hole, and are disposed on the lower block There is a chute for mounting the block, the block can slide in the chute; the distance between the front ends of the two blocks is not greater than the outer diameter of the plug, and the two blocks can be snapped on the slider of the other ruler Insert the column into the annular groove.

Further, the fastener is sleeved on the plug post, and two baffles are respectively arranged on two sides of the fastener, and the two baffles respectively stop at the end of the two blocks, and the baffle can be pressed on the upper block. The inside of the cavity formed by the assembly of the lower press block is swung.

Further, the polygon dynamic demonstration teaching aid is further equipped with a protractor with an angular scale on the surface, and a round hole is arranged in the center of the protractor, and the circular hole can be set on the plug post.

Beneficial effect

Compared with the prior art, a polygonal dynamic demonstration teaching aid of the present invention comprises a plurality of rulers, a through slot is arranged in the middle of the ruler, and a plurality of sliders are arranged in the through slot, and the slider can slide in the through slot. A plug post is arranged at the top of the slider, and a sleeve hole matching the plug post is arranged at the bottom of the slider. The rulers can be stacked one on top of the other, and the sliders can be stacked on top of each other so that a plurality of rulers can be combined into various polygonal shapes. In the demonstration of the invention, the upper and lower rulers can be stacked or separated as needed, and the disassembly and assembly of the ruler is simple and time-saving, and is convenient to use. It can reduce the workload of teachers' mapping, and can also cultivate students' brains, associations and observations, stimulate students' imagination and improve students' interest in learning geometry.

DRAWINGS

1 is a schematic view of the appearance of a preferred embodiment of the present invention;

Figure 2 is a schematic cross-sectional view of the M in Figure 1;

Figure 3 is a perspective view of the first embodiment of the slider of Figure 1;

Figure 4 is an exploded perspective view of Figure 3;

Figure 5 is a perspective view of a second embodiment of the slider of the present invention;

Figure 6 is a schematic view of the N section of Figure 5;

Figure 7 is an exploded perspective view of Figure 5;

Figure 8 is an arbitrary triangular schematic diagram of the present invention;

Figure 9 is a schematic view similar to the triangle of the present invention;

Figure 10 is a schematic view of a trapezoidal center line of the present invention;

Figure 11 is a schematic illustration of the diagonal of the diamond shown in the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The polygon dynamic demonstration teaching aid of the invention comprises a plurality of rulers 1 . Please refer to FIG. 1 , which is a perspective view of a ruler 1 according to a preferred embodiment of the present invention. A through groove 11 is provided in the longitudinal direction of each of the rulers 1, and three sliders 2 are mounted in the through groove 11, and each of the sliders 2 is slidable in the through groove 11. A scale mark 13 is provided along the length direction of the top surface 12 of the ruler 1 near its edge.

Referring to FIG. 2 together, the step surface 14, the guide groove 15, and the bottom concave surface 16 are recessed into the ruler 1 on both sides of the through groove 11. The step surface 14 is located at the upper portion of the ruler 1 and below the top surface 12 of the ruler 1. The bottom concave surface 16 is located at the lower portion of the ruler 1 and below the bottom surface 17 of the ruler 1. The guide groove 15 is lower than the step surface 14 and away from the through groove 11. A vertical groove 18 is recessed in a side of the guide groove 15 facing the ruler 1. In the present embodiment, the vertical groove 18 is disposed on a side away from the through groove 11. The cross section of the vertical groove 18 may be provided in a V shape, and the apex of the V shape is aligned with the scale mark 13 of the top surface 12 of the ruler 1. The cross section of the vertical groove 18 can also be arranged in an arc shape.

In the present invention, two embodiments of the slider 2 are given. Referring again to Figures 3 and 4 together, the first embodiment of the slider 2 is shown. In the present embodiment, the slider 2 includes an upper pressing block 21 and a lower pressing speed 22 which are engaged with each other, and a magnetic guiding member 23 and a magnetic piece 24. The magnetic flux fastening member 23 is disposed on the top surface of the slider 2, and the magnetic sheet 24 is disposed on the bottom surface of the slider 2. The magnetic flux fastening member 23 can fasten the upper pressing block 21, the pressing speed 22 and the magnetic sheet 24 together. . The upper pressing block 21 is disposed on the step surface 14 and the guiding groove 15 on both sides of the through groove 11, and is slidable in the guiding groove 15. The lower pressing blocks 22 are disposed in the bottom concave surface 16 on both sides of the through groove 11, and are free to slide on the bottom concave surface 16. In the present embodiment, the lower pressing block 22 at the bottom of the slider 2 is higher than the bottom surface 17 of the straight rule 1, and the magnetic guiding engaging member 23 at the top surface of the slider 2 is lower than the top surface 12 of the straight rule 1.

A plug post 25 is protruded from an intermediate position of the top surface of the lower press block 22, and the plug post 25 is connected in series with the upper press block 21 and the magnetic flux engaging member 23, and is higher than the top surface of the magnetic flux engaging member 23. A socket hole 26 is recessed in the bottom of the insertion post 25, and the insertion post 25 can be engaged with the sleeve hole 26 of the other ruler 1 slider 2, so that the sliders 2 of the upper and lower rulers 1 can be The overlays are combined. Moreover, the magnetic piece 24 at the bottom of the slider 2 of the ruler 1 above can be superimposed by magnetic attraction with the magnetic flux engaging member 23 of the slider 2 of the lower rule 1, further adding two The rigidity and stability of the joint of the slider 2 of the ruler 1.

Guide ribs 27 are protruded from the bottom surface of the upper pressing block 21, and the guiding ribs 27 can cooperate with the guiding grooves 15 and can slide freely in the guiding grooves 15. A bead hole 212 is respectively recessed on both side surfaces 211 of the upper pressing block 21, and a spring 28 and a top bead 29 having a ball end shape are sequentially mounted in the top bead hole 212, and the top bead 29 can slide in the top bead hole 212, and the top bead 29 The ball head can be raised above the side 211 of the upper block 21 and can be stopped on the surface of the vertical groove 18.

When the slider 2 slides at a position other than the scale mark 13 of the ruler 1, the ball head of the top bead 29 is pressed by the side of the guide groove 15 and retracted into the bead hole 212. When the slider 2 is slid to the position of the scale 13 of the ruler 1, the top bead 29 is bounced under the pressure of the spring 28, and the ball of the top bead 29 is reset and protrudes, and the surface of the vertical groove 18 is stopped. The slider 2 is free to slide in the guide groove 15, and each time it slides to the position of the scale mark 13, the top bead 29 is reset from the top bead hole 212 and abuts against the surface of the vertical groove 18, and a "click" sound is given as a cue.

Referring to FIG. 5 and FIG. 7 together, it is a second embodiment of the slider 2'. In the present embodiment, the slider 2' includes an upper pressing block 21' that is engaged with each other and a lower pressing speed 22'. A plug post 25' is protruded at an intermediate position of the top surface of the lower press block 22'. The end of the plug post 25' is provided with a plug structure, and the plug structure is an annular groove 23' disposed at the end of the plug post. . A socket hole 26' is recessed in the bottom of the plug post 25', and the plug post 25' can be matched with the sleeve hole 26' of the other ruler 1 slider 2', so that the upper and lower rulers 1 The sliders 2' can be stacked together. A socket structure 24' is provided in the socket hole 26' to cooperate with the plug structure.

The socket structure 24' includes two blocks 241' and a fastener 242'. The two blocks 241' are respectively disposed on two sides of the sleeve hole 26', and the lower block 22' is provided with a mounting block 241'. The chute 221', the block 241' can slide in the chute 221'. The distance between the front ends 243' of the two blocks 241' is not greater than the outer diameter of the plug posts 25', and the two blocks 241' can be snapped onto the plug posts 25' of the slider 2' of the other ruler 1. Inside the annular groove 23'. In order to facilitate the superposition and removal of the sliders 2' of the two rulers 1, the front end 243' of the block 241' can be arranged in an arc shape, so that the insertion post 25' is inserted into the annular groove 23', which is also convenient. The plug post 25' is pulled out of the annular groove 23'.

The fastener 242 ′ is sleeved on the insertion post 25 ′, and two ribs 244 ′ are respectively disposed on two sides of the fastener 242 ′, and the two blocking 244 ′ are respectively stopped at the end of the two clamping blocks 241 ′. 245', the flap 244' is swingable within the cavity 222' formed by the assembly of the upper press block 21' and the lower press block 22'. When the plug post 25' is inserted into the annular groove 23', the plug post 25' will open the two latches 241', so that the two latches 241' are respectively moved outward to drive the flap 244' to swing. . After the plug post 25' is inserted into position, the two latches 241' are snapped into the annular recess 23', and the flap 244' rebounds back to its original shape.

In this embodiment, the mating structure of the slider 2' and the ruler 1, including the sliding structure in the through slot 11 and the beading structure disposed at the lower pressing speed 22' are completely the same as those in the previous embodiment, and details are not described herein again.

In order to increase the demonstration effect of the present invention, each of the rulers 1 of the present invention is further provided with a protractor 3 having an angular scale on its surface. A circular hole 31 is provided in the center of the protractor 3, and the circular hole 31 can be fitted on the insertion post 25, and the protractor 3 can be conveniently fitted to the insertion post 25 of the slider 2. In the present embodiment, the protractor 3 is made of a transparent material, and the ruler 1 can also be made of a transparent material, and the number of angles between the combined rulers 1 can be visually seen.

In the present embodiment, the polygon demonstration teaching aid includes six ruler 1 and six protractors 3, and three sliders 2 are disposed on each ruler 1. More than three rulers 1 can be combined by the superposition of the slider 2 into various patterns commonly used in geometric teaching.

Straight ruler 1 is connected in series and can be used as an extended scale.

The three rulers 1 can be assembled into various triangles in the geometry teaching by the slider 2 on the ruler 1, which can demonstrate the stability of the triangle, demonstrate the complementary angle of the parallel lines, and the like. This embodiment gives a combined demonstration of one of the arbitrary triangles, see Figure 5.

The four rulers 1 can be assembled into a variety of quadrilaterals in geometry teaching through a number of sliders 2, demonstrating the instability of the quadrilateral, demonstrating the median line of the triangle, demonstrating the angular bisector of the triangle, and demonstrating the sag of the triangle Lines can be similar to triangles, and so on. This embodiment gives a combination of one of the triangles, see Figure 6.

The five rulers 1 can be assembled into a variety of pentagons in geometry teaching through a number of sliders 2, which can demonstrate the trapezoidal median line, and the like. This embodiment gives a combined demonstration of one of the trapezoidal median lines, see FIG.

The six rulers 1 can be assembled into a variety of hexagons in geometry teaching through a number of sliders 2, which can demonstrate the diagonal of the diamond, demonstrate the center of gravity of the triangle, demonstrate the center of gravity of the triangle, and so on. This embodiment gives a combined demonstration of the diagonal of one of the diamonds, see Figure 8.

Since the demonstration is generally performed on a erected blackboard, the presenter must hold the above teaching aid by hand to prevent it from falling due to its own weight. For this reason, the present invention has been improved by providing a plurality of belts on the bottom surface of the ruler 1. A magnetic magnet 4 (shown in Fig. 1) is mounted and bonded to a counterbore (not shown) near the ends of the ruler 1. When the present invention is demonstrated on an iron blackboard, the magnet 4 can adsorb the ruler 1 on the blackboard without falling due to its own weight, without the need to hold it by hand, to provide convenience to the presenter.

The invention can better cultivate students' brain, hands-on, association analogy and observation ability through the simple combination of the ruler and the connecting piece and demonstrate various geometric figures, and stimulate the interest of students in learning geometry. Through the transformation of the presentation graphics, students can also be connected and educated on sports perspectives to develop students' ability to analyze and solve problems.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A polygon dynamic demonstration teaching aid comprises a plurality of rulers, a through groove is arranged along the length direction of each of the rulers, and a plurality of sliders are installed in the through groove, and the slider is at the through slot a sliding member, wherein a top of the slider is provided with a plug post, and a bottom of the slider is provided with a sleeve hole that can cooperate with the plug post, and the ruler can be stacked on top of each other. The sliders can be stacked on top of each other such that the plurality of rulers can be combined into various polygonal shapes.
The polygon dynamic demonstration teaching aid according to claim 1, wherein a step surface, a guiding groove and a bottom concave surface are respectively recessed into the ruler on both sides of the through groove, and the step surface is lower than a top surface of the ruler, the bottom concave surface is lower than a bottom surface of the straight ruler, the guiding groove is lower than the step surface and away from the through groove; and the ruler faces one side of the guiding groove The recess is provided with a plurality of vertical grooves.
The polygon dynamic demonstration teaching aid according to claim 2, wherein the slider further comprises an upper pressing block that can be fastened to each other and the pressing is fast, and the upper pressing block is disposed on the two sides of the through groove. And sliding on the surface and the guiding groove, wherein the lower pressing block is disposed in the bottom concave surface on both sides of the through groove, and is slidable on the bottom concave surface; The bottom surface is convexly provided with guiding ribs, and the guiding ribs cooperate with the guiding grooves.
The polygonal dynamic demonstration teaching aid according to claim 3, wherein a top bead hole is respectively recessed on both sides of the upper pressing block, and a spring is arranged in the top bead hole and a end face is spherically shaped. a top bead, the top bead being slidable within the bead hole, the ball end of the top bead being higher than the side of the upper pressing block and being stopable on the surface of the vertical groove.
The polygon dynamic demonstration teaching aid according to claim 4, wherein a magnetic flux engaging member is disposed on a top surface of the slider, and a magnetic sheet is disposed on a bottom surface of the slider, and the magnetic conductive fastening member is passed through The magnetic adsorption of the magnetic sheet can combine the sliders of the different rulers on top of each other; the magnetic fastening component can fasten the upper pressing block, the pressing down and the magnetic sheets together.
The polygon dynamic demonstration teaching aid according to claim 5, wherein the insertion post protrudes from an intermediate position of a top surface of the lower pressing block, and the insertion post is connected in series with the upper pressing block and magnetically conductive a fastening member is raised above the top surface of the magnetic flux fastening component; the socket hole is disposed at a bottom of the lower pressing block and is located below the insertion post, and the socket hole is The other of the sliders of the ruler slider cooperates.
The polygon dynamic demonstration teaching aid according to claim 4, wherein the end of the plug post is provided with a plug structure, and a sleeve that can cooperate with the plug structure is disposed in the sleeve hole. Connected structure.
The polygonal dynamic demonstration teaching aid according to claim 7, wherein the insertion structure is an annular groove disposed at an end of the insertion post; the socket structure comprises two blocks and a fastener. Two of the card blocks are respectively disposed on two sides of the socket hole, and the lower pressure block is provided with a sliding slot for mounting the card block, and the card block can slide in the sliding slot; The spacing between the front ends of the blocks is not greater than the outer diameter of the plug posts, and the two blocks may be snapped into the annular grooves of the plug posts of the sliders of the other rulers.
The polygonal dynamic demonstration teaching aid according to claim 8, wherein the fastener is sleeved on the plug post, and two sides of the fastener are respectively provided with two flaps, two of the blocks. The sheets are respectively stopped at the tail ends of the two of the blocks, and the blocks are swingable in a cavity formed by assembling the upper and lower press blocks.
The polygon dynamic demonstration teaching aid according to claim 1, wherein the polygon dynamic demonstration teaching aid is further provided with a protractor with an angular scale on the surface, and a circular hole is arranged in the center of the protractor, and the circular hole can be set. On the plug post.