CN218647536U - Space three-dimensional teaching model assembly device - Google Patents

Abstract

The utility model provides a space three-dimensional teaching model assembly device, which comprises a space coordinate box and a laser penholder, wherein the space coordinate box is of a transparent cuboid structure, and each side wall of the space coordinate box is provided with a coordinate grid line; the laser pen rack comprises a base, wherein a fixing groove used for installing a laser pen is formed in the base, and the laser pen is a laser white light dual-purpose laser pen. The utility model discloses the cooperation uses this set of space coordinate teaching aid when subject such as teaching in classroom, the study geometry after class, physics relates to two-dimensional plane and three-dimensional space, can directly watch the knowledge that three-dimensional coordinate combines required study, makes knowledge such as the more easily audio-visual study dot line face of student, rectangular coordinate system between.

Description

Spatial three-dimensional teaching model assembly device

Technical Field

The utility model belongs to the technical field of the supplementary teaching technique and specifically relates to a three-dimensional teaching model subassembly device in space is related to.

Background

At present, regarding the explanation of the three-dimensional space, the main teaching media mainly include paper books, blackboard writing and multimedia images. The existing education teaching aid can only perform plane demonstration, and needs to process and convert the graphs seen on the plane into three-dimensional graphs in the brain and sea through the own brains of students when learning, which causes great understanding obstacles to students with weak three-dimensional effect originally, and can not combine entries and paraphrases with real three-dimensional objects, thereby seriously affecting the learning effect and generating the feeling of boredom. Therefore, the study effect is easily influenced by the disorderly direction when the solid geometry and the physics are studied subsequently, and meanwhile, the great negative influence is generated on the psychology of students, and even the rejection is generated on the study.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-dimensional teaching model subassembly device in space can directly watch the knowledge that three-dimensional coordinate combines required study, can understand the concept that is relevant with space coordinate more easily through audio-visual observation to the concept that abstract space coordinate is relevant.

According to an object of the utility model, the utility model provides a spatial three-dimensional teaching model assembly device, which comprises a spatial coordinate box and a laser penholder, wherein the spatial coordinate box is of a transparent cuboid structure, and each side wall of the spatial coordinate box is provided with a coordinate grid line; the laser pen rack comprises a base, wherein a fixing groove used for installing a laser pen is formed in the base, and the laser pen is a laser white light dual-purpose laser pen.

Further, the space coordinate box includes preceding space board, back space board, left space board, right space board, goes up space board and lower space board, preceding space board back space board left side space board with right side space board encloses synthetic round in proper order, preceding space board back space board left side space board with the upper portion and the lower part of the junction of right side space board are fixed with fixed base block respectively, go up the space board with down the space board is fixed respectively the top and the below of fixed base block.

Furthermore, the fixed base block is fixedly connected with the front space plate, the rear space plate, the left space plate and the right space plate through self-tapping screws, the upper space plate is fixedly connected with the lower space plate through long bolts, and first butterfly nuts are arranged at the top ends of the long bolts.

Further, the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate are transparent glass plates or transparent acrylic plates or transparent plastic plates.

Furthermore, holes for fixing the fixed base block are formed in four corners of the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate.

Furthermore, the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate are all provided with fixed center holes at the center positions, and the fixed center holes are located at the original point coordinates of the coordinate grid lines.

Further, the numbers on the two opposite side walls of the space coordinate box are in mirror symmetry structures.

Further, the laser pen is fixed in the fixed slot through two locking pieces, the locking piece is the ring form, be equipped with the spout in the fixed slot, be equipped with on the locking piece with spout complex slider, but the locking piece joint is in the fixed slot, the laser pen runs through two in proper order the locking piece is fixed in the fixed slot.

Further, two still be equipped with the regulating block between the locking block, the regulating block is the cylinder structure, the regulating block middle part is equipped with and is used for the through-hole that the laser pen runs through, be equipped with the draw-in groove on the lateral wall of regulating block, but adjusting bolt's spiral shell head joint is in the draw-in groove, adjusting bolt's screw rod runs through the draw-in groove extends to the outside of base, adjusting bolt's tail end is equipped with second butterfly nut, second butterfly nut with be equipped with adjusting spring between the base, adjusting spring's both ends are equipped with the gasket respectively.

Furthermore, a key hole is formed in the side wall of the fixing groove, and the key hole corresponds to a control switch of the laser pen.

The technical scheme of the utility model when subject such as teaching in classroom, study geometry after class, physics relates to two-dimensional plane and three-dimensional space, the cooperation uses this set of space coordinate teaching aid, can directly watch the knowledge that three-dimensional coordinate combines required study, makes the student knowledge such as more easily audio-visual study point line face, rectangular coordinate system within a definite time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a laser pen rack of the present invention;

fig. 2 is a side view of the laser pen rack of the present invention;

FIG. 3 is a schematic structural view of the locking block, the adjusting block and the laser pen of the present invention;

fig. 4 is a schematic structural view of the base and the fixing groove of the present invention;

FIG. 5 is a schematic structural view of the space coordinate box of the present invention;

fig. 6 is a schematic structural view of the present invention in use.

In the figure, 1, a space coordinate box; 101. a front space plate; 102. a rear space plate; 103. a left space plate; 104. a right space plate; 105. an upper space plate; 106. a lower space plate; 2. a laser pen rack; 3. fixing the base block; 4. a long bolt; 5. a first wing nut; 6. a base; 7. a laser pen; 8. fixing grooves; 9. a locking block; 10. a chute; 11. a slider; 12. an adjusting block; 13. a card slot; 14. adjusting the bolt; 15. a second wing nut; 16. adjusting the spring; 17. a gasket; 18. and a key hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example 1

As shown in fig. 1-6:

the utility model provides a three-dimensional teaching model component device in space, includes space coordinate box 1 and laser penholder 2, and space coordinate box 1 is transparent cuboid structure, and space coordinate box 1 includes preceding space board 101, back space board, left space board, right space board 102, top space board 103 and lower space board, and preceding space board 101, back space board, left space board, right space board 102, top space board 103 and lower space board are transparent glass board or transparent ya keli board or transparent plastic slab etc..

The front space plate 101, the rear space plate, the left space plate and the right space plate 102 are sequentially enclosed into a circle, the upper part and the lower part of the joint of the front space plate 101, the rear space plate, the left space plate and the right space plate 102 are respectively fixed with a fixed base block 3, and the upper space plate 103 and the lower space plate are respectively fixed above and below the fixed base block 3.

The four corners of the front space plate 101, the rear space plate, the left space plate, the right space plate 102, the upper space plate 103 and the lower space plate are provided with holes for fixing the fixing base block 3, and the tapping screws penetrate through the holes in the front space plate 101, the rear space plate, the left space plate and the right space plate 102 to be fixedly connected with the fixing base block 3.

Fixed base block 3 totally eight, fixed base block 3 is fixed with transparent coordinate board through self-tapping screw for fixed coordinate board. The fixed base block 3 is also fixedly connected with the upper space plate 103 and the lower space plate through a long bolt 4, and a first butterfly nut 5 is arranged at the top end of the long bolt 4. The fixed base block 3 and the long bolt 4 are matched for use, and a first butterfly nut is matched with a long rod screw so as to be convenient for mounting and dismounting an object to be measured.

The center positions of the front space plate 101, the rear space plate, the left space plate, the right space plate 102, the upper space plate 103 and the lower space plate are all provided with a fixed center hole, and the fixed center holes are positioned at the original point coordinates of the coordinate grid lines. The hole at the origin coordinates (center) "0,0" is used for fixing the object to be measured of the space coordinate box 1.

Coordinate grid lines are arranged on the front space plate 101, the rear space plate, the left space plate, the right space plate 102, the upper space plate 103 and the lower space plate; the numbers on the two opposite side walls of the space coordinate box are in mirror symmetry structures. In order to distinguish coordinate directions, coordinate values on the three transparent plates are mirror image numbers, and coordinate values on the three transparent plates are non-mirror image numbers.

The laser pen rack 2 comprises a base 6, a fixing groove 8 used for installing a laser pen 7 is formed in the base 6, and the laser pen 7 is a laser white light dual-purpose laser pen. Laser pen 7 is fixed in fixed slot 8 through two locking pieces 9, and locking piece 9 is the ring form, is equipped with spout 10 in the fixed slot 8, be equipped with on the locking piece 9 with spout 10 complex slider 11, but locking piece 9 joint is in fixed slot 8, and laser pen 7 runs through two locking pieces 9 in proper order and fixes in fixed slot 8. Still be equipped with regulating block 12 between two locking pieces 9, regulating block 12 is the cylindrical structure, and regulating block 12 middle part is equipped with the through-hole that is used for the laser pen to run through, is equipped with draw-in groove 13 on the lateral wall of regulating block 12, but adjusting bolt 14's spiral shell head joint is in draw-in groove 13, and adjusting bolt 14's screw rod runs through draw-in groove 13 and extends to the outside of base 6, and adjusting bolt 14's tail end is equipped with second butterfly nut 15, is equipped with adjusting spring 16 between second butterfly nut 15 and the base 6, and adjusting spring 16's both ends are equipped with gasket 17 respectively. The side wall of the fixing groove 8 is provided with a key hole 18, and the key hole 18 is arranged corresponding to a control switch of the laser pen 7.

The utility model discloses 2 two parts of space coordinate box and laser penholder cooperate and use, go up space board 103 and down through 4 fixed connection of stay bolt between space board and the fixed base block 3, the top of stay bolt 4 is equipped with first butterfly nut 5. The space coordinate box 1 is formed by fixing a front space plate 101, a rear space plate, a left space plate, a right space plate 102, an upper space plate 103 and a lower space plate through eight fixed base blocks 3 and four long bolts 4, and is a cube as a whole. The laser pen rack 2 consists of a base 6, and the laser white light dual-purpose laser pen is connected with the base 6 by a fixing groove 8 and two locking blocks 9.

The front space plate 101, the rear space plate, the left space plate, the right space plate 102, the upper space plate 103 and the lower space plate are all provided with coordinate grid lines, coordinate numbers, number-axis letters and the like formed by vertical crossed lines. The surfaces of the three coordinate plates of the front space plate 101, the left space plate and the upper space plate 103 are also marked with Chinese characters or foreign characters of the corresponding surfaces.

Laser penholder 2 is the integrated into one piece structure, and the base 6 of laser penholder 2 is suitable for with handheld, and the bottom of base 6 can be placed on the lateral wall of space coordinate box 1, and fixed slot 8 is used for fixed laser, the dual-purpose laser pen of white light, offers the control switch who corresponds with laser pen 7 on the lateral wall of fixed slot 8 and sets up key hole 18.

The utility model discloses when using:

several sets of experimental protocols can be provided as follows:

the first experimental scheme is as follows: line surface of observation point

The second experimental scheme is as follows: plane rectangular coordinate system for assisting learning

The third experimental scheme is as follows: rectangular coordinate system for auxiliary learning space

The fourth experimental scheme is as follows: observing the perspective phenomenon of large and small

The fifth experimental scheme is as follows: auxiliary learning center projection method and orthographic projection method

The sixth experimental scheme is as follows: auxiliary learning three-view, using space ruler

Experimental scheme I

The name of the experiment: line surface of observation point

Purpose of the experiment: by observing the grid squares, one understands what are points, lines, planes in the common mathematical knowledge.

The experimental principle is as follows: the point-line plane is a concept in geometry, and is a basic element of a plane space.

Experimental equipment: the device comprises a space coordinate box, a black white board pen, a red white board pen, a soft ruler (for avoiding scratches on the surface of a coordinate board), a protractor, toilet paper dipped with alcohol (for cleaning the surface of the coordinate board), and dry toilet paper.

The experimental steps are as follows:

1. the inspection teaching aid observes whether the screw is not hard up, and whether the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show to show personnel when the teaching aid damages or shows.

2. Supplementary explanation "point": randomly selecting a surface (in order to ensure the display effect, the coordinate numbers of the displayed coordinate surface are non-mirror image numbers as much as possible), using a black whiteboard pen to point a point on the intersection point of the grid (the point is selected from the original point 0 and 0 for the first display), combining mathematical knowledge, explaining that the point is the simplest shape and is the most basic component of the geometric figure, and the point is used as 1 zero-dimensional object in the space, and the point only has a position and has no shape in the space. In order to ensure the tidiness of the experimental equipment, after the explanation, the drawn points are wiped off by using toilet paper dipped with alcohol, and then the drawn points are wiped dry by using dry toilet paper so as to be used continuously in a short time.

3. Supplementary explanation "line segment": randomly selecting a surface (in order to ensure the display effect, the coordinate number of the displayed coordinate surface is a non-mirror image number as much as possible), using a red white board pen to point one point on the intersection point of the grid (the origin is selected as much as 0,0 in the first display), using a black white board pen to point another point on the coordinate grid, using a soft ruler for assistance, using a black white board pen to connect the two points, combining mathematical knowledge, explaining a line segment, namely a continuous or discontinuous line segment formed by one or more than one different line elements, such as a line segment of a solid line or a line segment of a double-point long-line segment formed by long-line, short-interval, point and short-interval. After explanation, the straight line segment between the two points is explained by using a soft ruler for assistance, connecting the two points by using a red white board pen in a bent state and combining mathematical knowledge. The explanation is not needed, so that the explanation is convenient to continue.

4. Supplementary explanation "ray": the method is characterized in that a soft ruler is used for assisting, a red white board pen is used for randomly selecting one end of a straight line segment, the length of one end is randomly prolonged (the length is not required to be on the intersection point of a coordinate grid as much as possible to ensure the display effect), and the method combines mathematical knowledge to explain rays (geometry, non-physics particle beams or photon beams with specific energy) to be a straight line formed by infinitely prolonging one end of the line segment. The ray has only one end and one direction and cannot measure length (because it is infinitely long). The explanation is not needed, so that the explanation is continued.

5. Supplementary explanation "straight line": the straight line is a track of a point moving along a certain direction and the opposite direction on a plane or a space, can be infinitely extended towards two directions and is a non-bending line which is composed of numerous points and is an axisymmetric pattern by combining mathematical knowledge and explaining that the straight line extends to two ends of the straight line segment randomly by a length (the straight line does not fall on the intersection point of the coordinate grids as much as possible to ensure the display effect). Two points which are not coincident on the plane have one straight line, namely the two points which are not coincident determine one straight line. The explanation is not needed, so that the explanation is continued.

6. Supplementary explanation "plane": the method is characterized in that a soft ruler and a protractor are used for assistance, a red white board pen is used for randomly drawing two straight lines on a transparent plate and connecting the two straight lines to be intersected with the existing black straight line, and mathematical knowledge is combined to explain that two points are arbitrarily taken to be connected into a straight line in one plane, and if all the points on the straight line are on the plane, the plane is the plane. One straight line is intersected with the other two straight lines in the plane, and if the sum of two internal angles on the same side of the straight line is less than 180 degrees, the two straight lines are infinitely extended and then are intersected at the side. In order to ensure the tidiness of the experimental equipment, after the explanation, the drawn points are wiped off by using toilet paper dipped with alcohol, and then the drawn points are wiped dry by using dry toilet paper so as to be used continuously in a short time.

The method is suitable for people: junior middle school teachers and students, primary school teachers and students, and preschool education institution teachers and students

The experimental extension direction: learning aid for plane geometry

Experimental scheme two

The name of the experiment: plane rectangular coordinate system for assisting learning

Purpose of the experiment: by observing the grid of coordinates, the digital axis is simulated by means of grid points and lines of coordinates, and the plane rectangular coordinate system is assisted to learn.

The experimental principle is as follows: two axes are drawn in a plane, perpendicular to each other and having a common origin. Wherein the horizontal axis is the X axis and the vertical axis is the Y axis. A plane rectangular coordinate system is established on a plane, and the rectangular coordinate system is called as a rectangular coordinate system for short. The device is also divided into a first quadrant, a second quadrant, a third quadrant and a fourth quadrant. Counting from the upper right corner, counting in the counterclockwise direction.

Experimental equipment: the device comprises a space coordinate box, a black white board pen, a red white board pen, a soft ruler (for avoiding scratches on the surface of a coordinate board), a protractor, toilet paper dipped with alcohol (for cleaning the surface of the coordinate board), and dry toilet paper.

The experimental steps are as follows:

1. the inspection teaching aid observes whether the screw is not hard up, and whether the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show to show personnel when the teaching aid damages or shows.

2. Establishing a plane rectangular coordinate system, and assisting in explaining the number axis of the plane rectangular coordinate system: selecting an XOY coordinate plane (in order to ensure the display effect, the coordinate numbers of the displayed coordinate plane are non-mirror image numbers as much as possible), selecting two straight line segments with the original points of 0,0 which are vertical to each other (determined by a protractor), drawing a straight line (only two ends exceed grid squares) with a red white board pen along the transverse line of the coordinate plate by using a soft ruler in an auxiliary way, marking a direction arrow on the right side of the straight line, and marking the direction arrow as an X axis (a transverse axis); a black white board pen is used to draw another straight line along the longitudinal direction of the coordinate board, and a direction arrow is marked above the straight line and is marked as the Y axis (vertical axis).

3. Quadrant of the supplementary explanation "plane rectangular coordinate system": after the plane rectangular coordinate system is established, the coordinate plane is divided into four parts I, II, III and IV by two coordinate axes, each part is called as a quadrant, the part at the upper right of the plane rectangular coordinate system is a first quadrant and is respectively called as a first quadrant, a second quadrant, a third quadrant and a fourth quadrant along the clockwise direction. Points on the coordinate axes do not belong to any quadrant.

4. Practice of labeling coordinates: marking coordinate points on the coordinate grid randomly by using a black whiteboard pen on the coordinate grid, practicing to record the coordinate values of the points on the plane rectangular coordinate system, and marking the quadrant where the marked points are located. In order to ensure the tidiness of the experimental equipment, after the explanation, the drawn points are wiped off by using toilet paper dipped with alcohol, and then the drawn points are wiped dry by using dry toilet paper so as to be used continuously in a short time.

The method is suitable for people: junior middle school teacher and student

Experimental scheme III

The name of the experiment: rectangular coordinate system for auxiliary learning space

The purpose of the experiment is as follows: by observing the coordinate grids, iron wires and folded paper on the six coordinate plates, observing the original point, the X axis, the Y axis, the Z axis and the eight trigrams, paying attention to the positive direction of the coordinate axes, and assisting in learning the space rectangular coordinate system.

The experimental principle is as follows:

a point O is arbitrarily chosen in space, and the point O is crossed by three mutually perpendicular axes OX, OY and OZ which all use O as an origin and have the same length unit. These three axes are called X-axis (horizontal axis), Y-axis (vertical axis), and Z-axis (vertical axis), respectively, and are collectively called coordinate axes. Their positive direction conforms to the right-hand rule that the right hand holds the Z axis, and when the positive directions of the four divergent X axes of the right hand are turned to the positive direction of the Y axis at an angle of pi/2, the pointing direction of the thumb is the positive direction of the Z axis. Thus, a space rectangular coordinate system is formed, which is called as a space rectangular coordinate system O-XYZ. The fixed point O is referred to as the origin of the coordinate system. A corresponding left-hand space rectangular coordinate system. In general, a right-hand space rectangular coordinate system is more commonly used in mathematics, and is different from other disciplines due to convenience.

Any two coordinate axes define a plane, and thus, which of the mutually perpendicular planes are referred to collectively as a coordinate plane. The coordinate plane defined by the X-axis and the Y-axis is called XOY plane, and similarly there are YOZ plane and ZOX plane. Three coordinate planes divide the space into eight sections, each called a divinatory limit. The eight divinators are respectively represented by letters I, II, III, IV, V, VI, VII and VIII, wherein a positive semi-axis containing an X axis, a Y axis and a Z axis is a first divinator, and the other three divinators on an XOY surface are arranged in a counterclockwise direction and are sequentially II, III and IV divinators; the V diagram is arranged below the XOY surface and adjacent to the I diagram, and then the VI diagram, the VII diagram and the VIII diagram are arranged in turn according to the anticlockwise direction.

Experimental equipment: a space coordinate box, a 0.8mm straight iron wire, paper (self-contained), a paper cutter or scissors (used for paper cutting), glue (self-contained or used stapler), scissors (self-contained), a screwdriver or a pliers (used for assisting in detaching a butterfly nut), a white board pen (red white board pen has a good effect), toilet paper dipped with alcohol (used for cleaning the surface of a coordinate board), and dry toilet paper.

The experimental steps are as follows:

1. the inspection teaching aid observes whether the screw is not hard up, and whether the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show to show personnel when the teaching aid damages or shows.

2. Tear 4 wing nuts of XOY face coordinate board top down carefully, the coordinate board and the wing nut after tearing down place well and prevent to lose.

3. And making paper models with three planes nearly perpendicular to each other in pairs.

3-1, cutting 24 paper strips with the length of 8 centimeters and the length of 4 centimeters by using a paper cutter or a paper scissors, folding the paper strips along the long edge, and keeping each surface at the length of 4 centimeters and the length of 4 centimeters for later use.

3-2, mutually connecting the surface of one paper slip with the other paper slip to form a three-dimensional shape with the thickness of 4 cm and a T-shaped cross section;

3-3, attaching two T-shaped three-dimensional double-layer paper surfaces together, contacting two paper surfaces with the thickness of 8 centimeters and the thickness of 4 centimeters to form a common line segment with the thickness of 8 centimeters, and reinforcing the common line segment with the thickness of 8 centimeters by using two folded paper strips with the thickness of 8 centimeters and the thickness of 4 parts of the common line segment to form a shape similar to an angle iron with a lacing wire;

3-4, mutually connecting the 8 cm multiplied by 4 cm surfaces of the 4 parts of models to form a paper model which is nearly vertical to each other in pairs on three planes, and ensuring that each axis can pass through a 0.8mm straight iron wire for standby.

4. The paper model manufactured in the last step is placed in a space coordinate box with an upper cover opened, the X axis, the Y axis and the Z axis are sequentially fixed by using a 0.8mm straight iron wire, then the upper cover is covered, and a butterfly nut is appropriately screwed (without great force, so that the space coordinate box is prevented from being damaged). 3 iron wires are adjusted, the iron wires are close to an X axis, a Y axis and a Z axis as much as possible, after adjustment, the iron wires are bent and fixed (the elastic ropes are processed according to actual conditions), only one point of the bent part is reserved, and for convenience of later operation, the rest of the iron wires are cut off by scissors for later use.

5. 8 octaves I, II, III, IV, V, VI, VII and VIII are marked by white board pens according to teaching materials or network pictures.

6. Carefully observing the divinatory symbols marked on each coordinate surface, and understanding the related contents of the divinatory symbols according to the actual requirements by a teaching aid consisting of a space coordinate box, a paper model and straight iron wires.

7. In order to ensure the tidiness of the experimental equipment, after the explanation, the drawn point is wiped off by using toilet paper dipped with alcohol, and then the drawn point is wiped off by using dry toilet paper so as to be continuously used in a short time.

The experimental extension direction: 1. making a room three-dimensional model, 2 making an overground and underground section three-dimensional model, 3 automatically setting numerical values to make an irregular three-dimensional object

The method is suitable for people: master and student of high school

Experimental scheme four

The name of the experiment: observing the perspective phenomenon of large and small

Purpose of the experiment: by observing the coordinate grids on the two coordinate plates parallel to the space coordinate box, the perspective phenomenon of the coordinate grids at different distances can be realized

The experimental principle is as follows: this is a principle of plane mirror imaging. It describes a principle of forming a virtual image identical to a real object due to reflection of light after the light enters a plane mirror.

The size of the image and the object are always equal according to the reflection law of light and the characteristics of the imaging of the plane mirror. The size of the image formed in the plane mirror is always the same as the size of the object, no matter how far the object is from the plane mirror. However, since a person has a feeling of "big and small when looking at an object, the vision really feels like" big "when the person walks towards the plane mirror, because the size of the object viewed by the human eye is closely related to not only the real size of the object but also the" viewing angle ". A straight line is respectively led from human eyes to two ends of an observed object, the included angle of the two straight lines is the visual angle, if the visual angle is large, a person can think that the object is large, and if the visual angle is small, the person can think that the object is small. When a person approaches the plane mirror, the distance between the image and the person is small, the angle of view of the person viewing the object is increased, and the image thus viewed is perceived to be large. This is just as you see a person walking far in front to you, seeing a small black shadow at first, getting bigger and bigger, getting bigger when walking in front of you, and what is more, the small black shadow is as big as the person walking in front of you, just because of the visual relationship, the image and object of the mirror image are symmetrical about the mirror surface, so the person gets closer to the mirror surface. The image must be gradually close to the mirror surface, and the human feeling is 'big-end-up', which is a visual effect.

Experimental equipment: the device comprises a space coordinate box, a camera (a mobile phone with a mobile phone seat type support can be used), a camera tripod, a soft ruler, a white board pen, toilet paper dipped with alcohol (used for cleaning the surface of a coordinate board), and dry toilet paper.

The experimental steps are as follows:

1. the inspection teaching aid observes whether the screw is not hard up, and whether the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show to show personnel when the teaching aid damages or shows.

2. Two parallel coordinate plates of a space coordinate box are selected, corresponding transverse shafts on the two coordinate plates are assisted by a soft ruler, and two equal-length straight line segments are drawn by a white board (for convenience of observation and calculation, the length of the straight line segment is preferably equal to the maximum range of a coordinate grid on the coordinate plate).

3. And (3) simultaneously illuminating the straight line segments on the upper coordinate plate and the lower coordinate plate by using a camera, measuring the lengths of the two straight line segments by using a soft ruler on a computer display screen, and recording.

4. And measuring the lengths of two straight line segments on the space coordinate plate by using a soft ruler, and recording.

5. After the explanation, the drawn point is wiped off by using toilet paper dipped with alcohol, and then the drawn point is wiped dry by using dry toilet paper so as to be used continuously in a short time.

The using population: junior middle school teachers and students, artistic education institution teachers and students, preschool education institution teachers and students

Experimental scheme five

The name of the experiment: auxiliary learning center projection method and orthographic projection method

Purpose of the experiment: the space coordinate box and the laser white light dual-purpose pen are used in a matched mode, and basic knowledge of the projection method is assisted to learn.

The experimental principle is as follows:

the projection method is a method in which a projection line from a projection center is projected through an object to a selected surface, and a pattern is obtained on the surface. The pattern obtained by the projection method is called a projection, and the surface on which the projection is obtained is called a projection surface. Three elements are projected: projection line, projection plane, object.

Projection methods are classified into a center projection method and a parallel projection method according to the relative position between projection lines.

A central projection method: the projection method in which the projection lines all emanate from a point is called a central projection method. The point from which the projected line emanates is the center of projection. Projection characteristics of the center projection method: the method has the advantages of strong stereoscopic impression, and a perspective view of a building is drawn by a central projection method in the field of building design. The measurement is poor-the size of the projection changes along with the change of the position of the object.

A parallel projection method: the projection method in which the projection lines are parallel to each other is called a parallel projection method. The parallel projection method is divided into an oblique projection method and a forward projection method according to whether the projection line is perpendicular to the projection plane.

An orthographic projection method: parallel projection method with projection line perpendicular to projection plane. Mechanical patterns are mainly drawn by an orthographic projection method, such as three-view drawing. The orthographic projection method can accurately express the shape and size of a space object, has good measurement and simple and convenient drawing, and is widely applied to engineering.

Experimental equipment: a space coordinate box, a laser and white light dual-purpose laser pen holding frame, a laser and white light dual-purpose pen (self-provided), black opaque paper, glue, scissors, a ruler, a beautiful pattern paper, a camera (a mobile phone with a mobile phone seat type support can be used), and a camera tripod.

The experimental steps are as follows:

1. inspection teaching aid.

Whether inspection space coordinate box observes the screw and becomes flexible, whether the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show to the show personnel when the teaching aid damages or shows.

Checking whether the laser and white light dual-purpose laser pen clamping frame has cracks or not; whether the wedge hole of the locking block of the fixed laser pen is loosened or not is judged; pressing the laser pen switch to check whether there is electricity, and whether the red laser and white light source can emit light normally.

2. The method comprises the steps of installing a laser pen rack according to an assembly drawing, correcting a laser pen by using a space box after installation, enabling an XOY coordinate plane (coordinate numerical value is a non-mirror image number) of the space box to face upwards, enabling a bottom plane of the laser pen rack to abut against (do not need to be pressed with effort so as to avoid increasing errors) the XOY coordinate plane of the space box, pressing a switch of a red laser, firstly aligning a red original point (0 and 0 point) on an upper layer, checking whether the red original point deviates from a red original point on a lower layer, properly adjusting a butterfly nut and a laser pen locking block if the deviation is large, moving to other coordinate points after two red points of two coordinate plates are aligned, repeatedly correcting, and carrying out subsequent operation when the deviation is small (because the device is a teaching aid and is not a precision product, the design error is 1 cm), and after three pairs of parallel coordinate planes are checked, determining that the demonstration effect is not influenced.

3. Cutting black opaque paper into small strips with the width of 5 mm, splicing the small strips into triangles with the side lengths of 3 cm, 4 cm and 5 cm respectively by using glue, and airing for later use.

4. Selecting an XOY coordinate surface (in order to ensure the display effect, the coordinate numbers of the displayed coordinate surface are non-mirror image numbers as much as possible), placing the black opaque triangular paper slip prepared in the previous step at the central position on the coordinate plate, and enabling the side with the length of 4 cm to be parallel to the X axis.

5. And a laser and white light dual-purpose pen is used for vertically irradiating the black opaque triangular paper slip on the coordinate plate to assist in learning the central projection method and the orthographic projection method.

5-1 auxiliary learning center projection method

The white light of the laser and white light dual-purpose laser pen moves back and forth along the position right above the black opaque triangular paper slip, the size of the triangular projection on the parallel coordinate plate below the black opaque triangular paper slip is observed, the contrast can be carried out, and the study of the central projection method can be assisted.

5-2 auxiliary learning center projection method

5-2-1, in order to prevent the black opaque triangular paper strips from moving in the using process, the beautiful pattern paper is used, small pieces of beautiful pattern paper are used for fixing the inner side of the triangle, the beautiful pattern paper is as small as possible, and the observation effect is prevented from being influenced.

5-2-2, clinging the coordinate plate on which the black opaque triangular paper slip is placed by using the base of the laser and white light dual-purpose laser pen holder, respectively irradiating three vertexes of the triangular paper slip by using red laser according to a key of the red laser, simultaneously irradiating the upper coordinate plate and the lower coordinate plate by using a camera when each point is irradiated, and respectively recording coordinate values of the upper coordinate plate and the lower coordinate plate, so that the learning of the orthographic projection method can be assisted.

Experimental extension direction: three views

The method is suitable for people: junior middle school teachers and students of this department (mechanical drawing)

Experimental scheme six

The name of the experiment: auxiliary learning three-view, using space ruler

Purpose of the experiment: by means of the auxiliary learning of three views of equipment, manual rough space scanning is completed, the length, the width and the height of an object are roughly measured, and the use of a space ruler is mastered

The experimental principle is as follows: according to the national standard, drawing a figure of an object by using an orthographic projection method is called a view. The lower diagram shows three different forms, but the views on one projection plane are identical. In order to accurately express the space shape of an object in engineering, a multi-surface orthographic projection drawing is adopted, and three views are a basic method for accurately expressing the shape.

The three-projection-surface system is composed of three mutually perpendicular projection surfaces. The intersection line of the three projection surfaces is called a projection axis, and is respectively represented by OX, OY and OZ, and may be simply called X, Y and Z axes. The three projection axes are mutually perpendicular and intersected, and the intersection point is called as an original point. And (3) placing the object in the three-projection-surface system, enabling the object to be positioned between an observer and the projection surfaces, and projecting the object to the three projection surfaces by using an orthographic projection method to obtain three views of the object.

1. The orthographic projection plane is called an orthographic elevation for short and is indicated by V, and the front view is a view projected from front to back on the V plane.

2. The horizontal projection plane, referred to as horizontal plane, is denoted by H, and the top view, projected from top to bottom, is the view obtained on the H plane.

3. The side elevation projection plane is called side elevation plane for short and is denoted by W, and the left view is projected from left to right and is a view obtained on the W plane.

Experimental equipment: the device comprises a space coordinate box, a laser white light dual-purpose laser pen holding frame, a laser white light dual-purpose pen (self-contained), an object to be measured (self-contained, the length, width and height dimensions of the object are respectively added with 2 cm and the maximum value of a coordinate grid which cannot exceed the space box), a 0.8mm straight iron wire or elastic rope (self-contained, the pulling force is kept not to be bent as much as possible when demonstrating the effect), scissors (corresponding to the elastic rope) or iron wire pliers (corresponding to the iron wire).

The experimental steps are as follows:

1. inspection teaching aid.

Inspection space coordinate box observes whether the screw is not hard up, and the inspection coordinate board has the crack, causes incised wound, stab when avoiding the show when the teaching aid damages or demonstrates to the show personnel.

Checking whether the laser white light dual-purpose laser pen clamping frame has cracks; whether the wedge hole of the locking block of the fixed laser pen is loosened or not is judged; pressing the laser pen switch to check whether there is electricity, and whether the red laser and white light source can emit light normally.

2. The method comprises the steps of installing a laser pen rack according to an assembly drawing, correcting a laser pen by using a space box after installation, enabling an XOY coordinate surface (coordinate value is a non-mirror image number) of the space box to face upwards, enabling a bottom plane of the laser pen rack to abut against (do not need to be pressed forcibly so as to avoid increasing errors) the XOY coordinate surface of the space box, pressing a switch of a red laser, firstly aligning a red original point (0 and 0 point) on an upper layer, checking whether the red original point deviates from a red original point on a lower layer, properly adjusting a butterfly nut and a laser pen locking block if the deviation is large, moving to other coordinate points after aligning two red points of two coordinate plates, repeatedly correcting, and performing subsequent operation when the deviation is small (because the device is a teaching aid, is not a precision product, and has a design error of 1 cm), and determining that a demonstration effect is not influenced after three pairs of parallel coordinate surfaces are checked.

3. The method comprises the steps of holding an object to be measured by hands, placing the object to be measured above a coordinate box, carrying out visual estimation, adding 2 centimeters to the length, the width and the height of the object to be measured respectively and not exceeding the maximum value of a coordinate grid of a space box, fixing the object to be measured by six 0.8mm straight iron wires (or elastic ropes) along an X axis, a Y axis and a Z axis after visual estimation, then enabling the iron wires (or the elastic ropes) to pass through 5 coordinate plates except an upper cover coordinate plate to be long by one section of iron wire, conveniently adjusting the position (referring to the figure, paying attention to the fact that the iron wires do not scratch the surface of a coordinate table plate), enabling the upper iron wires to pass through the upper cover coordinate plate, fixing 4 butterfly nuts, adjusting 6 iron wires, enabling the iron wires to be close to the X axis, the Y axis and the Z axis as much as possible, bending and fixing the iron wires (processing the elastic ropes according to actual conditions) after adjustment, only keeping a point of the bent part, and then operating the rest iron wires conveniently shearing and keeping standby.

4. The bottom plane of the assembled laser pen holder is abutted against (does not need to be pressed by force so as to avoid increasing errors) an XOY coordinate plane, a ZOX coordinate plane and a YOZ coordinate plane of the space box, a switch of the red laser is pressed, a red laser point is enabled to be close to an angular point of the measured object and a position needing key marking, a close numerical value is read on a coordinate plate, and the length, the width and the height of the measured object are recorded.

5. And opening three-dimensional software, taking the recorded numerical values as reference, and performing simple three-dimensional modeling in the software.

The experimental extension direction: recording the length of each side of a room, determining an origin, setting coordinates of each corner point of the room according to the length of the side of the room, taking the coordinates as a reference in three-dimensional software, and performing simple three-dimensional modeling in the three-dimensional software.

The method is suitable for people: junior middle school students (interest), senior high school students, and student of the department (mechanical drawing)

To sum up, through the above experimental scheme, the utility model discloses through above-mentioned experimental scheme, teaching or self-study can understand the concept that abstract space coordinate is relevant more easily through audio-visual observation with the concept that space coordinate is relevant to and follow-up in the study process of stereogeometry, physics etc. understand the concept of some space directions more easily.

The utility model discloses this set of space coordinate teaching aid is used in the cooperation when subjects such as teaching geometry, physics relate to two-dimensional plane and three-dimensional space in classroom teaching, after class, can directly watch the knowledge that three-dimensional coordinate combines required study, makes knowledge such as student's more easy audio-visual study dot line face, rectangular coordinate system between, lets knowledge more be close the life.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (10)

1. A spatial three-dimensional teaching model assembly device is characterized by comprising a spatial coordinate box and a laser pen rack, wherein the spatial coordinate box is of a transparent cuboid structure, and each side wall of the spatial coordinate box is provided with a coordinate grid line; the laser pen rack comprises a base, wherein a fixing groove used for installing a laser pen is formed in the base, and the laser pen is a laser white light dual-purpose laser pen.

2. The spatial three-dimensional teaching model assembly device according to claim 1, wherein the spatial coordinate box comprises a front space plate, a rear space plate, a left space plate, a right space plate, an upper space plate and a lower space plate, the front space plate, the rear space plate, the left space plate and the right space plate sequentially enclose into a circle, the upper part and the lower part of the joint of the front space plate, the rear space plate, the left space plate and the right space plate are respectively fixed with a fixed base block, and the upper space plate and the lower space plate are respectively fixed above and below the fixed base block.

3. The spatial three-dimensional teaching model assembly device according to claim 2, wherein the fixed base block is fixedly connected with the front space plate, the rear space plate, the left space plate and the right space plate through self-tapping screws, the upper space plate and the lower space plate are fixedly connected with the fixed base block through long bolts, and first butterfly nuts are arranged at the top ends of the long bolts.

4. The spatial solid teaching model assembly device of claim 2, wherein the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate are transparent glass plates or transparent acrylic plates or transparent plastic plates.

5. The spatial solid teaching model assembly apparatus according to claim 2, wherein holes for fixing the fixing base block are provided at four corners of the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate.

6. The assembly device of claim 2, wherein the front space plate, the rear space plate, the left space plate, the right space plate, the upper space plate and the lower space plate are provided with a central fixing hole at the center of the grid line.

7. The spatial solid teaching model assembly apparatus of claim 1 wherein the numbers on the two opposing sidewalls of the spatial coordinate box are mirror symmetric structures.

8. The assembly device of claim 1, wherein the laser pen is fixed in the fixing groove through two locking blocks, the locking blocks are circular, a sliding groove is formed in the fixing groove, a sliding block matched with the sliding groove is arranged on each locking block, the locking blocks can be clamped in the fixing groove, and the laser pen sequentially penetrates through the two locking blocks and is fixed in the fixing groove.

9. The assembly device according to claim 8, wherein an adjusting block is further disposed between the two locking blocks, the adjusting block is of a cylindrical structure, a through hole for the laser pen to pass through is disposed in the middle of the adjusting block, a clamping groove is disposed on a side wall of the adjusting block, a screw head of an adjusting bolt can be clamped in the clamping groove, a screw rod of the adjusting bolt passes through the clamping groove and extends to the outer side of the base, a second butterfly nut is disposed at a tail end of the adjusting bolt, an adjusting spring is disposed between the second butterfly nut and the base, and spacers are disposed at two ends of the adjusting spring respectively.

10. The assembly device of claim 9, wherein a key hole is formed on a sidewall of the fixing groove, and the key hole corresponds to a control switch of the laser pen.

Images