阅读说明：本技术 一种用于数学思维训练的数学教具 (A mathematics teaching aid for training of mathematics thinking ) 是由 樊嘉烨 于 2020-06-05 设计创作，主要内容包括：本发明公开了一种用于数学思维训练的数学教具,涉及教学教具技术领域,具体为教学黑板、磁性变形尺和绘图辅助机构,所述教学黑板一侧连接有通告黑板,所述通告黑板表面底部安置有磁性贴,所述磁性变形尺设置于通告黑板表面上部,所述教学黑板与通告黑板底部均固定有支撑板,所述插孔内部贯穿有连接柱,所述绘图辅助机构连接于教学黑板与通告黑板的顶部。该用于数学思维训练的数学教具,教学黑板为教学用黑板,而通告黑板主要用于书写通知通告,两者互不干扰,且通过磁性贴与磁性板之间的吸附作用可将纸页直接固定于通告黑板表面,该设置方便人们观看的同时亦方便后期取下纸页,有利于避免纸页纸页撕下后有残留纸屑位于通告黑板表面。(The invention discloses a mathematical teaching aid for mathematical thinking training, and relates to the technical field of teaching aids, in particular to a teaching blackboard, a magnetic deformation ruler and a drawing auxiliary mechanism, wherein one side of the teaching blackboard is connected with a notification blackboard, the bottom of the surface of the notification blackboard is provided with a magnetic sticker, the magnetic deformation ruler is arranged on the upper part of the surface of the notification blackboard, supporting plates are fixed at the bottoms of the teaching blackboard and the notification blackboard, a connecting column penetrates through the inner part of a jack, and the drawing auxiliary mechanism is connected to the tops of the teaching blackboard and the notification blackboard. This a mathematics teaching aid for mathematics thinking training, the blackboard is used for the teaching to the teaching blackboard, and the notice blackboard mainly used writes the notice, and both mutual noninterference, and can be with page snap-on in notice blackboard surface through the adsorption between magnetism subsides and the magnetic sheet, should set up and also make things convenient for the later stage to take off the page when making things convenient for people to watch, be favorable to avoiding the page to tear the back to have the residual wastepaper to lie in and announce the blackboard surface.)

1. The utility model provides a mathematics teaching aid for training of mathematics thinking, includes teaching blackboard (1), magnetism deformation chi (5) and drawing complementary unit (10), its characterized in that: teaching blackboard (1) one side is connected with notice blackboard (2), and teaching blackboard (1) and notice blackboard (2) are inside all to be provided with magnetic plate (3), settle magnetism subsides (4) bottom the surface of notice blackboard (2), magnetism warp chi (5) and set up in notice blackboard (2) surface upper portion, teaching blackboard (1) all is fixed with backup pad (6) with notice blackboard (2) bottom, and backup pad (6) surface has seted up jack (7), jack (7) inside runs through there are spliced pole (8), and spliced pole (8) top is fixed with powder collection box (9), drawing complementary unit (10) are connected in the top of teaching blackboard (1) and notice blackboard (2).

2. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: teaching blackboard (1) is the integral structure with between announcing blackboard (2), and the height dimension of announcing blackboard (2) is unanimous with the height dimension of teaching blackboard (1), constitutes embedded structure moreover between magnetic sheet (3) and teaching blackboard (1), the announcing blackboard (2) to magnetism pastes (4) and constitutes the absorption through magnetic sheet (3) and is connected between announcing blackboard (2).

3. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: the magnetic deformation ruler (5) comprises a fixed transverse ruler (501), a first damping rotating shaft (502), a first rotating ruler (503), a second damping rotating shaft (504), a second rotating ruler (505), a magnet (506), a graduated scale (507) and a magnetic strip (508), wherein the first damping rotating shaft (502) is fixed on the surface of one end of the fixed transverse ruler (501), the first rotating ruler (503) is connected on the surface of the first damping rotating shaft (502), the second damping rotating shaft (504) is fixed on the surface of the other end of the fixed transverse ruler (501), the second rotating ruler (505) is connected on the surface of the second damping rotating shaft (504), the magnet (506) is fixed on one side of the tail end of the second rotating ruler (505) and the surface of the tail end of the first rotating ruler (503), and the graduated scales (507) are sprayed on the surfaces of the fixed transverse ruler (501), the first rotating ruler (503) and the second rotating ruler (505), and magnetic strips (508) are fixed on the back surfaces of the fixed transverse ruler (501), the first rotary ruler (503) and the second rotary ruler (505).

4. A math teaching aid for mathematical thinking training according to claim 3, wherein: the first rotary ruler (503) forms a rotary structure through the first damping rotating shaft (502) and the fixed transverse ruler (501), the first rotary ruler (503) forms a triangular structure through the fixed transverse ruler (501) and the second rotary ruler (505), and the back surfaces and the front surfaces of the fixed transverse ruler (501), the first rotary ruler (503) and the second rotary ruler (505) are located on the same vertical surface.

5. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: jack (7) equidistance distributes on backup pad (6) surface, and is the vertical form between backup pad (6) and teaching blackboard (1), announcement blackboard (2) and distributes, and powder is collected box (9) and is passed through between spliced pole (8), jack (7) and backup pad (6) and constitute the block and be connected to the outer mouthful of structural dimension of spliced pole (8) is identical with the interior mouthful of structural dimension of jack (7).

6. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: the side face of the powder collection box (9) is attached to the surfaces of the teaching blackboard (1) and the notification blackboard (2), and the inner wall of the powder collection box (9) is of an arc-shaped structure.

7. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: drawing complementary unit (10) are including support column (1001), slide rail (1002), spout (1003), magnetism draw runner (1004), slide pipe (1005) and cross cursor laser instrument (1006), and support column (1001) top outer end is fixed with slide rail (1002), spout (1003) have been seted up on slide rail (1002) surface, and inside magnetism draw runner (1004) that is provided with of spout (1003), magnetism draw runner (1004) outer end is connected with slide pipe (1005), and slide pipe (1005) outer wall is fixed with cross cursor laser instrument (1006).

8. A math teaching aid for mathematical thinking training according to claim 7, wherein: the sliding rail (1002) is parallel to the teaching blackboard (1) and the notification blackboard (2), and the sliding rail (1002) is fixed with the teaching blackboard (1) and the notification blackboard (2) through a support column (1001).

9. A math teaching aid for mathematical thinking training according to claim 7, wherein: the sliding structure is formed by the sliding pipe (1005) and the cross cursor laser instrument (1006) through the magnetic sliding strip (1004), the sliding groove (1003) and the sliding rail (1002), and the inner wall of the sliding groove (1003) and the outer wall of the magnetic sliding strip (1004) are smooth surfaces.

Technical Field

The invention relates to the technical field of teaching aids, in particular to a mathematic teaching aid for mathematic thinking training.

Background

Mathematics is the subject of the concepts such as study quantity, structure, change and space model, mathematics thinking training, thereby it drills out this subject of mathematics promptly to be as the name implies, when cultivateing mathematics thinking for the student, these teaching appliances such as blackboard, ruler, set-square are indispensable, can write out the content of instruction through the blackboard so that the student better understands, and cooperate the ruler, drawing tools such as set-square can draw the figure so that more audio-visual messenger student knows the thought of the picture of mathematics subject.

These teaching aids such as current blackboard, ruler, set square often can use inconveniently, for example: can produce a large amount of powders and drop when writing with the chalk on blackboard surface, need change between the two ceaselessly when ruler, set-square use, be unfavorable for improving teaching efficiency, and ruler, set-square often have no department to place and influence activity space, and in the teaching, often can paste the notice on the wall, the later stage often has the adhesion of remaining wastepaper on the wall after tearing to it is pleasing to the eye to influence.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a mathematic teaching aid for mathematic thinking training, which solves the problem that teaching aids such as a blackboard, a ruler, a triangular ruler and the like in the background technology are often inconvenient to use, for example: can produce a large amount of powders and drop when writing with the chalk on the blackboard surface, need change between the two ceaselessly when ruler, set-square use, be unfavorable for improving teaching efficiency, and ruler, set-square often have no department to place and influence activity space, and in the teaching, often can paste the notice on the wall, the later stage often has the adhesion of remaining wastepaper on the wall after tearing to influence pleasing to the eye problem.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a mathematics teaching aid for mathematical thinking training, includes teaching blackboard, magnetism deformation chi and drawing complementary unit, teaching blackboard one side is connected with the notice blackboard, and the inside magnetic plate that all is provided with of teaching blackboard and notice blackboard, settle notice blackboard surface bottom has the magnetism to paste, magnetism deformation chi sets up in notice blackboard surface upper portion, the teaching blackboard all is fixed with the backup pad with notice blackboard bottom, and the backup pad surface has seted up the jack, the inside spliced pole that runs through of jack, and the spliced pole top is fixed with the powder and collects the box, drawing complementary unit connects in the top of teaching blackboard and notice blackboard.

Optionally, be integral structure between teaching blackboard and the notice blackboard, and the height dimension of notice blackboard is unanimous with the height dimension of teaching blackboard, constitutes embedded structure moreover between magnetic plate and the teaching blackboard, the notice blackboard to magnetism pastes and forms the absorption connection through magnetic plate and between the notice blackboard.

Optionally, magnetism warp the chi including fixed horizontal chi, first damping pivot, first rotatory chi, second damping pivot, second rotatory chi, magnet, scale and magnetism strip, and fixed horizontal chi one end fixed surface has first damping pivot, first damping pivot surface is connected with first rotatory chi, fixed horizontal chi other end fixed surface has second damping pivot, and second damping pivot surface is connected with second rotatory chi, the terminal one side of second rotatory chi all is fixed with the magnet with the terminal surface of first rotatory chi, and fixed horizontal chi, first rotatory chi and the equal spraying in second rotatory chi surface have the scale, fixed horizontal chi, first rotatory chi and the second rotatory chi back all are fixed with the magnetism strip.

Optionally, the first rotary ruler forms a rotary structure between through the first damping pivot and the fixed horizontal ruler, and the first rotary ruler forms a triangular structure between through the fixed horizontal ruler and the second rotary ruler, and the fixed horizontal ruler, the back of the first rotary ruler and the second rotary ruler and the front of the first rotary ruler are located on the same vertical plane.

Optionally, the jacks are equidistantly distributed on the surface of the supporting plate, the supporting plate is vertically distributed with the teaching blackboard and the notification blackboard, the powder collecting box is connected with the supporting plate in a clamping manner through the connecting column and the jacks, and the outer opening of the connecting column is matched with the inner opening of the jacks in structural size.

Optionally, the side face of the powder collecting box is attached to the surfaces of the teaching blackboard and the notification blackboard, and the inner wall of the powder collecting box is of an arc-shaped structure.

Optionally, drawing complementary unit includes support column, slide rail, spout, magnetism draw runner, slide pipe and cross cursor laser instrument, and support column top outer end is fixed with the slide rail, the spout has been seted up on the slide rail surface, and the inside magnetism draw runner that is provided with of spout, magnetism draw runner outer end is connected with the slide pipe, and the slide pipe outer wall is fixed with cross cursor laser instrument.

Optionally, the slide rail is distributed in parallel with the teaching blackboard and the notification blackboard, and the slide rail forms a fixed structure with the teaching blackboard and the notification blackboard through the support column.

Optionally, the sliding tube and the cross cursor laser instrument form a sliding structure through the magnetic sliding strip, the sliding groove and the sliding rail, and the inner wall of the sliding groove and the outer wall of the magnetic sliding strip are both smooth surfaces.

The invention provides a mathematic teaching aid for mathematic thinking training, which has the following beneficial effects:

1. this a mathematics teaching aid for mathematics thinking training, the teaching blackboard, the notice blackboard bottom all settles and has the powder to collect the box, and the powder is collected box side and teaching blackboard, the laminating of notice blackboard surface mutually, and box length is greater than the teaching blackboard, the overall length of notice blackboard both is collected to the powder moreover, collects the box through the powder and is favorable to collecting the powder of producing when writing the chalk, avoids the powder directly to fall on ground to be favorable to alleviateing people and clears up the degree of difficulty.

2. This a mathematics teaching aid for mathematics thinking training, the box is collected to the powder is accomplished the installation in inserting the jack on backup pad surface through the spliced pole with its bottom, the later stage only needs upwards to promote the powder and collects the box and can follow it and take off in the backup pad, make things convenient for the later stage to empty the processing powder, and the powder is collected box inner wall and is the convenient powder roll-off of arc structure, it has the powder to remain to prevent that the powder from collecting box inside, and the inside gadget such as chalk and blackboard eraser of placing of collecting box of powder, make things convenient for people to take.

3. This a mathematics teaching aid for mathematics thinking training, the blackboard is used for the teaching to the teaching blackboard, and the notice blackboard mainly used writes the notice, and both mutual noninterference, and can be with page snap-on in notice blackboard surface through the adsorption between magnetism subsides and the magnetic sheet, should set up and also make things convenient for the later stage to take off the page when making things convenient for people to watch, be favorable to avoiding the page to tear the back to have the residual wastepaper to lie in and announce the blackboard surface.

4. This a mathematics teaching aid for training of mathematics thinking, first rotatory chi, the rotatory chi of second is respectively through first damping pivot, thereby the second damping pivot rotates and makes first rotatory chi, form ruler or set square between second rotatory chi and the fixed horizontal chi, thereby make things convenient for the teaching personnel to draw, need not incessantly change the graphics primitive again, and fixed horizontal chi, first rotatory chi all is fixed with the magnetism strip with the rotatory chi back of second, can warp the chi with magnetism through the magnetism strip and adsorb in the teaching blackboard, the blackboard surface is announced, thereby the problem of teaching aid nowhere-free laying has been solved, also make things convenient for the teaching personnel to take simultaneously at any time.

5. This a mathematics teaching aid for mathematics thinking training, can directly throw out "ten" word form cursor on teaching blackboard surface through cross cursor laser instrument, it draws to make magnetism warp a chi side hug closely the light line again, and cross cursor laser instrument makes "ten" word form cursor can appear in the arbitrary department on teaching blackboard surface along the horizontal slip of slide rail in addition, be favorable to making the shape of drawing more upright and meticulous, the figure lines that prevent to draw take place crooked, thereby more audio-visual letting student discernment and understanding.

Drawings

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

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a structural diagram of the magnetic deformation ruler in its entirety;

FIG. 4 is a structural diagram of the magnetic deformation ruler in a rotated state according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 2 according to the present invention.

In the figure: 1. a teaching blackboard; 2. a notification blackboard; 3. a magnetic plate; 4. magnetic sticking; 5. a magnetic deformation ruler; 501. fixing a transverse ruler; 502. a first damping rotating shaft; 503. a first rotary scale; 504. a second damping rotating shaft; 505. a second rotary scale; 506. a magnet; 507. a graduated scale; 508. a magnetic strip; 6. a support plate; 7. a jack; 8. connecting columns; 9. a powder collection box; 10. a drawing assistance mechanism; 1001. a support pillar; 1002. a slide rail; 1003. a chute; 1004. a magnetic slider; 1005. a slide pipe; 1006. a cross cursor laser.

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.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the present invention provides a technical solution: a mathematics teaching aid for mathematics thinking training comprises a teaching blackboard 1, a magnetic deformation ruler 5 and a drawing auxiliary mechanism 10, wherein one side of the teaching blackboard 1 is connected with a notification blackboard 2, magnetic plates 3 are arranged inside the teaching blackboard 1 and the notification blackboard 2, a magnetic sticker 4 is arranged at the bottom of the surface of the notification blackboard 2, the teaching blackboard 1 and the notification blackboard 2 are in an integrated structure, the height of the notification blackboard 2 is consistent with that of the teaching blackboard 1, an embedded structure is formed between the magnetic plates 3 and the teaching blackboard 1 and the notification blackboard 2, the magnetic sticker 4 is in adsorption connection with the notification blackboard 2 through the magnetic plates 3, the welding integrated structure between the teaching blackboard 1 and the notification blackboard 2 is favorable for improving the firmness of connection between the teaching blackboard 1 and the notification blackboard 2, and the height of the notification blackboard 2 is consistent with that of the teaching blackboard 1 and is favorable for improving the overall aesthetic degree, the magnetic plate 3 is embedded in the teaching blackboard 1 and the notification blackboard 2, so that the interference of external environment on the magnetic plate 3 can be avoided, dust is prevented from being contaminated on the surface of the magnetic plate 3, and paper sheets can be directly fixed on the surface of the notification blackboard 2 through the adsorption effect between the magnetic paste 4 and the magnetic plate 3, so that the paper sheets can be conveniently taken down at the later stage while being conveniently watched by people, and the situation that residual paper scraps are left on the surface of the notification blackboard 2 after the paper sheets are torn off can be avoided;

the magnetic deformation ruler 5 is arranged on the upper part of the surface of the notice blackboard 2, the magnetic deformation ruler 5 comprises a fixed transverse ruler 501, a first damping rotating shaft 502, a first rotating ruler 503, a second damping rotating shaft 504, a second rotating ruler 505, a magnet 506, a graduated scale 507 and a magnetic strip 508, the surface of one end of the fixed transverse ruler 501 is fixed with the first damping rotating shaft 502, the surface of the first damping rotating shaft 502 is connected with the first rotating ruler 503, the surface of the other end of the fixed transverse ruler 501 is fixed with the second damping rotating shaft 504, the surface of the second damping rotating shaft 504 is connected with the second rotating ruler 505, the magnet 506 is fixed on one side of the tail end of the second rotating ruler 505 and the surface of the tail end of the first rotating ruler 503, the surfaces of the fixed transverse ruler 501, the first rotating ruler 503 and the second rotating ruler 505 are all coated with the graduated scales 507, the back surfaces of the fixed transverse ruler 501, the first rotating ruler 503 and the second rotating ruler 505 are all fixed with the magnetic strip 508, the first rotating ruler 503 and the fixed transverse ruler 501 form a rotating structure, the first rotary ruler 503 forms a triangle structure through the fixed transverse ruler 501 and the second rotary ruler 505, the back sides and the front sides of the fixed transverse ruler 501, the first rotary ruler 503 and the second rotary ruler 505 are positioned on the same vertical plane, the first rotary ruler 503 and the second rotary ruler 505 rotate through the first damping rotating shaft 502 and the second damping rotating shaft 504 respectively, so that straight rulers or triangular rulers are formed between the first rotary ruler 503, the second rotary ruler 505 and the fixed transverse ruler 501, so that the drawing is convenient for the teaching personnel to draw, the drawing tools do not need to be replaced continuously, the magnetic strips 508 are fixed on the back sides of the fixed transverse ruler 501, the first rotary ruler 503 and the second rotary ruler 505, the magnetic deformation ruler 5 can be adsorbed on the surfaces of the teaching 1 and the blackboard 2 through the magnetic strips 508, the problem that the teaching tools have no place is solved, and the teaching personnel can use the teaching tools at any time conveniently, when the magnetic deformation ruler 5 is triangular, the magnet 506 on the surface of the tail end of the first rotating ruler 503 and the magnet 506 on one side of the tail end of the second rotating ruler 505 are mutually adsorbed, so that the overall stability of the triangular magnetic deformation ruler 5 is improved, and no matter how the first rotating ruler 503 and the second rotating ruler 505 rotate, the fixed transverse ruler 501, the back sides and the front sides of the first rotating ruler 503 and the second rotating ruler 505 are all located on the same vertical plane, so that the magnetic deformation ruler 5 is attached to the surface of the teaching blackboard 1 to be placed, and the stability of people in drawing is improved;

the bottom of the teaching blackboard 1 and the bottom of the notification blackboard 2 are both fixed with a support plate 6, the surface of the support plate 6 is provided with a jack 7, a connecting post 8 penetrates through the jack 7, the top of the connecting post 8 is fixed with a powder collecting box 9, the jacks 7 are equidistantly distributed on the surface of the support plate 6, the teaching blackboard 1 and the notification blackboard 2 are vertically distributed, the powder collecting box 9 is connected with the support plate 6 through the connecting post 8 and the jack 7 in a clamping way, the external opening structural size of the connecting post 8 is matched with the internal opening structural size of the jack 7, the side surface of the powder collecting box 9 is attached to the surfaces of the teaching blackboard 1 and the notification blackboard 2, the inner wall of the powder collecting box 9 is of an arc structure, the side surface of the powder collecting box 9 is attached to the surfaces of the teaching blackboard 1 and the notification blackboard 2, and the length of the powder collecting box 9 is greater than the total length of the teaching blackboard 1 and the notification blackboard 2, the powder collection box 9 is beneficial to collecting powder produced when chalk is written, and the powder is prevented from directly falling on the ground, so that the cleaning difficulty of people is reduced, the powder collection box 9 is installed by inserting the connecting column 8 at the bottom of the powder collection box into the jack 7 on the surface of the supporting plate 6, the powder collection box 9 can be taken down from the supporting plate 6 only by pushing the powder collection box 9 upwards in the later stage, the powder can be poured and processed conveniently in the later stage, the inner wall of the powder collection box 9 is of an arc-shaped structure, powder residue in the powder collection box 9 is prevented, small tools such as chalk, blackboard eraser and the like can be placed in the powder collection box 9, and people can take the powder conveniently;

the drawing auxiliary mechanism 10 is connected to the tops of the teaching blackboard 1 and the notification blackboard 2, the drawing auxiliary mechanism 10 comprises a support column 1001, a slide rail 1002, a slide groove 1003, a magnetic slide bar 1004, a slide tube 1005 and a cross cursor laser instrument 1006, the outer end of the top of the support column 1001 is fixed with the slide rail 1002, the surface of the slide rail 1002 is provided with the slide groove 1003, the inside of the slide groove 1003 is provided with the magnetic slide bar 1004, the outer end of the magnetic slide bar 1004 is connected with the slide tube 1005, the outer wall of the slide tube 1005 is fixed with the cross cursor laser instrument 1006, the slide rail 1002, the teaching blackboard 1 and the notification blackboard 2 are distributed in parallel, the slide rail 1002, the support column 1001, the teaching blackboard 1 and the notification blackboard 2 form a fixed structure, the slide tube 1005 and the cross cursor laser instrument 1006 form a sliding structure through the magnetic slide bar 1004 and the slide groove 1003 and the slide rail 1002, the inner wall of the slide groove 1003 and the outer wall of the magnetic slide bar 1004 are both in a smooth surface, a cross cursor can be directly projected on the surface of the teaching blackboard 1 through the cross cursor instrument 1006, make 5 a side of magnetism deformation chi hug closely the cursor line again and draw, cross cursor laser instrument 1006 makes "ten" form cursor can appear in the arbitrary department on teaching blackboard 1 surface along the horizontal slip of slide rail 1002 in addition, be favorable to making the shape of drawing more upright and meticulous, the figure lines that prevent to draw take place to be crooked, thereby more audio-visually let student discernment and understanding, and spout 1003 inner wall all is smooth surface with magnetism draw 1004 outer wall, be favorable to reducing the frictional force between spout 1003 inner wall and the magnetism draw 1004 outer wall and improve the smoothness nature when magnetism draw 1004 slides.

In summary, when the mathematical teaching aid for training mathematical thinking is used, firstly, when drawing is needed, a cross-shaped cursor can be directly projected on the surface of the teaching blackboard 1 through the cross cursor laser instrument 1006, then the magnetic deformation ruler 5 is held by one hand to enable one side surface of the magnetic deformation ruler to be tightly attached to the optical marking line, the chalk is held by the other hand to draw, when the ruler is needed, the second rotary ruler 505 and the first rotary ruler 503 are only needed to be outwards pulled by hands to enable the ruler to rotate by taking the first damping rotating shaft 502 and the second damping rotating shaft 504 as the center of a circle until the second rotary ruler 505 and the first rotary ruler 503 are aligned with the fixed transverse ruler 501 side surface, because the first damping rotating shaft 502 and the second damping rotating shaft 504 have the angle fixing function, the second rotary ruler 505 and the first rotary ruler 503 can be prevented from inclining downwards, and then when the triangular ruler is needed to draw, the second rotary ruler 505 and the first rotary ruler 503 are pulled by taking the first damping rotating shaft 502 and the first rotary ruler 503 to enable the second rotary ruler to incline inwards, The second damping rotating shaft 504 is rotated as a circle center until one side of the tail end of the second rotating ruler 505 contacts with the surface of the tail end of the first rotating ruler 503, at the moment, the magnet 506 on the surface of the tail end of the first rotating ruler 503 and the magnet 506 on one side of the tail end of the second rotating ruler 505 are mutually adsorbed, which is beneficial to improving the overall stability of the triangular magnetic deformation ruler 5, then the magnetic deformation ruler 5 is directly attached to one position of the surface of the teaching blackboard 1 or the surface of the notification blackboard 2 after being used, the magnetic strips 508 are fixed on the back sides of the fixed transverse ruler 501, the first rotating ruler 503 and the second rotating ruler 505, the magnetic deformation ruler 5 can be adsorbed on the surfaces of the teaching blackboard 1 and the notification blackboard 2 through the magnetic strips 508, thereby solving the problem that teaching tools are not placed, simultaneously, being convenient for a chalk teaching person to take at any time, then, a large amount of powder can be generated when writing with drawing, and naturally falls into the powder collecting box 9, the powder collection box 9 is favorable for collecting powder produced when chalk is written, the powder is prevented from directly falling on the ground, and therefore the cleaning difficulty of people is favorably reduced, the powder collection box 9 is installed by inserting the connecting column 8 at the bottom of the powder collection box into the jack 7 on the surface of the supporting plate 6, the powder collection box 9 can be taken down from the supporting plate 6 only by pushing the powder collection box 9 upwards in later stage, the powder is convenient to pour and process in later stage, the inner wall of the powder collection box 9 is of an arc-shaped structure, the powder is convenient to slide out, powder residue in the powder collection box 9 is prevented, small tools such as chalk, blackboard eraser and the like can be placed in the powder collection box 9, people can conveniently take the powder, finally, the notification blackboard 2 is connected to one side of the teaching blackboard 1, the notification blackboard 2 is mainly used for writing notification, the notification is not interfered with the teaching blackboard 1, and paper pages can be directly fixed on the surface of the blackboard 2 through the adsorption effect between the magnetic paste 4 and the magnetic plate 3, the arrangement is convenient for people to watch and take down the paper sheets at the later stage, is favorable for avoiding residual paper scraps on the surface of the notification blackboard 2 after the paper sheets are torn down, and the model of the cross cursor laser instrument 1006 is SW-311.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.