CN216697583U - Mathematics probability model taste teaching aid - Google Patents

Abstract

The utility model provides an interesting teaching aid for a mathematical probability model, belongs to the technical field of mathematical teaching, and is used for solving the technical problems that the existing mathematical probability model is poor in interestingness, not visual enough and the like. The device comprises a placing box and a lifting moving vehicle, wherein the lifting moving vehicle is arranged at the lower end of the placing box, a fixing frame is fixed in the placing box, a rotating assembly is arranged on the fixing frame, a magnetic attraction rotating disc is detachably arranged on the rotating assembly, a probability partition disc is detachably arranged on the magnetic attraction rotating disc, a plurality of transverse adjusting push rods are arranged on the front side of the fixing frame, adjusting supports are arranged at the end parts of the transverse adjusting push rods, bow and crossbow assemblies are arranged on the adjusting supports, a placing box is fixed in the placing box, and a plurality of magnetic attraction boomerangs are arranged in the placing box; the interesting teaching aid for the mathematical probability model is convenient to store in the placing box, and occupies small space; the shooting mathematical probability demonstration of crossbow and boomerang can be carried out, the effect is good, the interestingness is high, and the teaching is intuitive; through placing the case and going up and down the locomotive cooperation, conveniently remove this device, the transportation of being convenient for.

Description

Mathematics probability model taste teaching aid

Technical Field

The utility model belongs to the technical field of mathematical teaching, and relates to a mathematical teaching aid, in particular to a mathematical probability model interesting teaching aid.

Background

Mathematics is a subject of researching concepts such as quantity, structure, change, space, information and the like, and belongs to a form science from a certain angle, a mathematical probability experiment is a common experiment in mathematics courses of middle school students, and probability is a quantity display of probability of occurrence of random events.

The phenomena observed in nature and society are classified into: the probability is a branch of mathematics, which researches the quantity rule of random phenomena, on one hand, the probability has own unique concept and method, on the other hand, the probability has close connection with other mathematical branches, which is an important component of modern mathematics, and the wide application of the probability almost extends to all scientific and technical fields, such as weather forecast, earthquake forecast and product sampling survey; the communication engineering of each department of industrial and agricultural production and national economy can be used for improving the anti-interference performance, the resolution ratio and the like of signals, the probability is an abstract concept, and students can understand and master more easily if the probability teaching aid demonstration and the matching explanation can be used in a mathematical probability course.

In the actual demonstration teaching process, the teacher is the intuitional teaching aid of general motion, the cooperation is said and is carried out the operation performance of demonstration, if throw the coin experiment, throw the coin many times promptly, it is half to count out the probability that obtains the positive and negative ascending of coin, but the interest is low, teaching is not enough directly perceived, can use mathematical probability presentation device model in mathematical probability teaching, however traditional mathematical probability presentation device model can not the omnidirectional rotation let student all around watch, can not let student oneself operate and obtain, be unfavorable for increasing student's study mathematics probability interest, student's learning efficiency has been reduced, and then the effect of student's study has been reduced.

Based on this, we provide a mathematical probability model interesting teaching aid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an interesting teaching aid for mathematical probability models aiming at the problems in the prior art, and the interesting teaching aid for mathematical probability models aims to solve the technical problems that: how to realize more interesting and more intuitive, and the students can learn the mathematical probability model through own operation.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a mathematics probability model taste teaching aid, is including placing the case and the locomotive that goes up and down, the locomotive that goes up and down sets up at the lower extreme of placing the case, places incasement portion and is fixed with the mount, be equipped with the runner assembly on the mount, detachably is equipped with magnetism on the runner assembly and inhales the carousel, detachably is equipped with the probability subregion dish on the magnetism carousel, the mount front side is equipped with a plurality of violently transfers the push rod, the tip of violently transferring the push rod is equipped with adjusts the support, be equipped with bow and crossbow subassembly on adjusting the support, it is fixed with and places the box to place incasement portion, it inhales the dartlike weapon to place the inside a plurality of magnetism that is equipped with of box.

Three side plates of the placing box are hinged box plates, an avoiding area is arranged at the upper end of a front side plate of the placing box, the fixing frame is located on the inner side of the front side plate, and an electric storage box is arranged in the placing box.

By adopting the structure, the three side plates are hinged box plates, the box plates are convenient to open and close, and the avoidance area is used for avoiding the rotating assembly.

The lift locomotive includes two frames and adjusting screw, be equipped with the X type crane of two symmetries between two frames, the frame of upside is fixed and is being placed the case lower extreme, the lower extreme four corners of the frame of downside all is fixed with the universal wheel, one side of two X type cranes is articulated with two frames respectively, the opposite side of two X type cranes slides respectively and sets up on two frames, adjusting screw's one end is rotated and is set up the upper portion in one side of two X type cranes, and adjusting screw's tip is equipped with the regulation hand (hold), adjusting screw's the other end is the free end, adjusting screw's the other end spiro union is on the upper portion of the opposite side of two X type cranes.

Structure more than adopting rotates the regulation hand (hold), adjusts the hand (hold) and drives adjusting screw and rotate to adjusting screw drives the opposite side of two X type erectors and slides along between two frames, thereby drives the frame of upside, upwards or moves down, adjusts to the height that suits with operator's figure, and the universal wheel conveniently drives this device and removes.

The rotating assembly comprises an installation rod, the installation rod is hinged to the upper end of the fixing frame, a rotating motor is fixed on the installation rod, the upper end of the installation rod is rotated to be provided with a rotating shaft, a belt pulley pair is arranged between an output shaft of the rotating motor and the rotating shaft, two folding mounting plates are arranged at the end part of the rotating shaft, the magnetic attraction rotary disc is detachably arranged on the two folding mounting plates, and the storage box is electrically connected with the rotating motor.

Structure more than adopting, when accomodating, two folding mounting panel fold together, and the installation pole is rolled up, sets up with the mount is perpendicular, during the use, earlier with the vertical place in the mount top of installation pole, expand two folding mounting panel again, inhale the carousel again and take out from placing the incasement portion with magnetism, install on two folding mounting panel, the output shaft that rotates the motor passes through the pulley pair and drives the axis of rotation and rotate to drive the folding mounting panel rotation of two expansions, and then drive the magnetism and inhale the carousel and rotate.

The adjusting support comprises a base, the base is fixed at the end portions of the transverse adjusting push rods, the base is arranged inside the storage box in a sliding mode, a sliding seat is arranged at the upper end of the base in a sliding mode, a lifting rod is arranged at the upper end of the sliding seat, a hinged seat is arranged at the end portion of the lifting rod, and the transverse adjusting push rods and the lifting rod are all electrically connected with the storage battery box.

Structure more than adopting, a plurality of horizontal transfer push rods can drive the base and slide along placing incasement portion, and the sliding seat slides on the base, is convenient for adjust bow and crossbow subassembly lateral shifting, and the lifter liftable removes to drive articulated seat lift removal, and then drive and adjust bow and crossbow subassembly lift removal.

The bow assembly comprises a bow and a bow arrow, the end of the bow is provided with an articulated frame, the articulated frame is articulated on an articulated seat, and the bow arrow is placed on the bow.

Structure more than adopting, the student arranges the bow and crossbow in the hand, drives the articulated frame with the bow and rotates to horizontal position along articulated seat, places the crossbow on the bow and crossbow with the crossbow arrow, shoots.

Compared with the prior art, this mathematical probability model taste teaching aid has following advantage:

the fixing frame and the rotating assembly are matched with the rotating assembly, and the adjusting bracket is matched with the bow assembly through the two folding mounting plates, so that the bow assembly is conveniently stored in the storage box, and the occupied space is small;

through the cooperation of the bow and crossbow assembly, the rotating assembly, the magnetic attraction rotating disc and the probability partition disc, the bow and crossbow shooting mathematical probability demonstration is carried out, the effect is good, the interestingness is high, and the teaching is intuitive;

the dart shooting mathematical probability demonstration is carried out through the matching of the placement box, the magnetic dart, the rotating assembly, the magnetic rotary disc and the probability partition disc, the interestingness is high, and the teaching is intuitive;

through placing the case and going up and down the locomotive cooperation, conveniently remove this device, the transportation of being convenient for.

Drawings

FIG. 1 is a schematic perspective view of the present invention during storage;

FIG. 2 is a schematic view of the present invention in a partially cut-away configuration during storage;

FIG. 3 is a partially cut-away front view of the present invention during storage;

fig. 4 is a schematic front side three-dimensional structure of the present invention in a bow shooting state;

fig. 5 is a schematic view of the rear side cube configuration of the present invention in a bow shooting state;

FIG. 6 is a schematic view showing the configuration of the boomerang in the shooting state;

in the figure: the device comprises a magnetic attraction rotary table 1, a placement box 2, a fixing frame 3, a lifting trolley 4, an adjusting bracket 5, a bow part 6, a rotating assembly 7, a transverse adjusting push rod 8, a frame 9, a universal wheel 10, an adjusting handle 11, an X-shaped lifting frame 12, an adjusting screw 13, a rotating motor 14, a belt pulley pair 15, a rotating shaft 16, a folding mounting plate 17, a base 18, a sliding seat 19, a lifting rod 20, a bow 21, a bow 22, a probability partition plate 23, a placement box 24 and a magnetic attraction dart 25.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Please refer to fig. 1-6, this embodiment provides a mathematical probability model interest teaching aid, including placing case 2 and lift locomotive 4, lift locomotive 4 sets up the lower extreme placing case 2, it is fixed with mount 3 to place case 2 inside, be equipped with runner assembly 7 on the mount 3, the last detachably of runner assembly 7 is equipped with magnetism and inhales carousel 1, detachably is equipped with probability subregion dish 23 on the magnetism and inhales carousel 1, 3 front sides of mount are equipped with a plurality of horizontal transfer push rods 8, the tip of horizontal transfer push rod 8 is equipped with adjusting bracket 5, be equipped with bow crossbow subassembly 6 on adjusting bracket 5, it is fixed with and places box 24 to place case 2 inside, it inhales dart 25 to place the inside a plurality of magnetism that is equipped with of box 24.

Three side plates of the placing box 2 are hinged box plates, an avoidance area is arranged at the upper end of a front side plate of the placing box 2, the fixing frame 3 is positioned at the inner side of the front side plate, and an electric storage box is arranged inside the placing box 2; the three side plates are hinged box plates, so that the box plates are convenient to open and close, and the avoidance area is used for avoiding the rotating assembly 7.

The lifting moving vehicle 4 comprises two frames 9 and an adjusting screw 13, two symmetrical X-shaped lifting frames 12 are arranged between the two frames 9, the frame 9 on the upper side is fixed at the lower end of the placing box 2, the four corners of the lower end of the frame 9 on the lower side are respectively fixed with universal wheels 10, one sides of the two X-shaped lifting frames 12 are respectively hinged with the two frames 9, the other sides of the two X-shaped lifting frames 12 are respectively arranged on the two frames 9 in a sliding manner, one end of the adjusting screw 13 is rotatably arranged at the upper part of one side of the two X-shaped lifting frames 12, an adjusting handle 11 is arranged at the end part of the adjusting screw 13, the other end of the adjusting screw 13 is a free end, and the other end of the adjusting screw 13 is screwed at the upper part of the other side of the two X-shaped lifting frames 12; the adjusting handle 11 is rotated, the adjusting handle 11 drives the adjusting screw rod 13 to rotate, so that the adjusting screw rod 13 drives the other sides of the two X-shaped lifting frames 12 to slide along the two frames 9, the frames 9 on the upper side are driven to move upwards or downwards, the height which is matched with the stature of an operator is adjusted, and the universal wheel 10 conveniently drives the device to move.

The rotating assembly 7 comprises an installation rod, the installation rod is hinged to the upper end of the fixed frame 3, a rotating motor 14 is fixed on the installation rod, a rotating shaft 16 is rotatably arranged at the upper end of the installation rod, a belt pulley pair 15 is arranged between an output shaft of the rotating motor 14 and the rotating shaft 16, two folding installation plates 17 are arranged at the end part of the rotating shaft 16, the magnetic attraction rotary disc 1 is detachably arranged on the two folding installation plates 17, and the storage battery box is electrically connected with the rotating motor 14; when accomodating, two folding mounting panel 17 are folded together, and the installation pole is folded, sets up with mount 3 is perpendicular, during the use, earlier with the vertical place in mount 3 top of installation pole, expand two folding mounting panel 17 again, inhale carousel 1 again and take out from placing 2 insides of case, install on two folding mounting panel 17, the output shaft that rotates motor 14 passes through the pulley pair 15 and drives axis of rotation 16 and rotate to drive the folding mounting panel 17 rotation of two expandes, and then drive the magnetism and inhale carousel 1 and rotate.

The adjusting bracket 5 comprises a base 18, the base 18 is fixed at the end part of the plurality of transverse adjusting push rods 8, the base 18 is arranged in the placing box 2 in a sliding manner, a sliding seat 19 is arranged at the upper end of the base 18 in a sliding manner, a lifting rod 20 is arranged at the upper end of the sliding seat 19, a hinged seat is arranged at the end part of the lifting rod 20, and the transverse adjusting push rods 8 and the lifting rod 20 are both electrically connected with the storage battery box; a plurality of horizontal transfer push rods 8 can drive base 18 along placing the inside slip of case 2, and sliding seat 19 slides on base 18, is convenient for adjust bow subassembly 6 lateral shifting, and the lifter 20 liftable removes to drive articulated seat lift removal, and then drive and adjust bow subassembly 6 lift removal.

The bow assembly 6 comprises a bow 21 and a bow arrow 22, a hinge frame is arranged at the end of the bow 21 and is hinged to a hinge seat, and the bow arrow 22 is placed on the bow 21; the student arranges bow 21 in the hand, rotates to horizontal position along articulated seat with bow 21 drive articulated frame, places bolt 22 on bow 21, shoots.

The working principle of the utility model is as follows:

a plurality of probability partition plates 23 are placed inside the placing box 2, patterns on the probability partition plates 23 are different, namely, the probability partition plates are divided into a plurality of different areas, the area S of the whole probability partition plate 23 is total, other areas are S1 and S2.

The device is pushed, the universal wheels 10 drive the device to move, the device is moved to a classroom for demonstration, three side plates are hinged box plates and are unfolded, the mounting rods are vertically placed above the fixing frame 3, then the two folding mounting plates 17 are unfolded, one probability partition plate 23 is taken out from the inside of the placing box 2, the magnetic attraction is mounted on the magnetic attraction rotary plate 1, the magnetic attraction rotary plate 1 is mounted on the two folding mounting plates 17, an output shaft of the rotating motor 14 drives the rotating shaft 16 to rotate through the belt wheel pair 15, the two unfolded folding mounting plates 17 are driven to rotate, the magnetic attraction rotary plate 1 is driven to rotate, and the probability partition plate 23 is driven to rotate;

firstly, demonstrating shooting mathematical probability of a bow and a crossbow: the plurality of transverse adjusting push rods 8 can drive the base 18 to slide along the inner part of the placing box 2, the lifting rods 20 can slide on the sliding seats 19, so that the bow assembly 6 can be adjusted to move transversely, the lifting rods 20 can move in a lifting way, the hinged seats can be driven to move in a lifting way, the bow assembly 6 can be adjusted to move in a lifting way, the requirements of students on stature can be met,

then, the student puts the bow 21 in hand, rotates the hinge frame along the hinge seat to the horizontal position with the bow 21, puts the crossbow 22 on the bow 21, shoots the probability partition plate 23 for several times, the total number is n, records the number of the crossbow 22 shooting on each area of the probability partition plate 23 as m1, m2, m2/n, mn, the probability ratio is the number ratio, m1/n, m2/n,.

Comparing the quantity ratio with the area ratio, wherein the quantity ratio and the area ratio are approximately the same, so that the probability model teaching is performed visually and interestingly;

secondly, demonstration of the mathematical probability of dart shooting:

a student slides out the sliding seat 19 on the base 18, removes the sliding seat 19, the lifting rod 20 and the bow and bolt assembly 6, takes out the magnetic dart 25 from the placing box 24, projects the magnetic dart 25 onto the probability partition plate 23, attracts the magnetic dart 25 onto the probability partition plate 23 for a plurality of times, wherein the total number is x, and records the number of the magnetic darts 25 which are shot on each area of the probability partition plate 23 as y1, y2,.. once, yn, the probability ratio is a number ratio, y1/x, y2/x,. once, yn/x;

compared quantity ratio and area ratio are approximately the same, so that the probability model teaching is performed intuitively and interestingly.

Probability partition plate 23 of changing different patterns is installed at magnetism and is inhaled carousel 1, carries out different probability model teaching, and this experiment can do a period of time more.

In conclusion, the fixing frame 3 and the rotating assembly 7 are matched with the rotating assembly 7, the two folding mounting plates 17 are matched with each other, and the adjusting bracket 5 is matched with the bow assembly 6, so that the bow assembly is conveniently stored in the storage box 2, and the space occupation is small;

through the cooperation of the bow and crossbow assembly 6, the rotating assembly 7, the magnetic attraction rotary disc 1 and the probability partition disc 23, the bow and crossbow shooting mathematical probability demonstration is carried out, the effect is good, the interestingness is high, and the teaching is intuitive;

the dart shooting mathematic probability demonstration is carried out through the matching of the placing box 24, the magnetic dart 25, the rotating assembly 7, the magnetic rotary disc 1 and the probability partition disc 23, the interestingness is high, and the teaching is intuitive;

through placing case 2 and the 4 cooperations of lift locomotive, conveniently remove this device, the transportation of being convenient for.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (6)

1. The utility model provides a mathematics probability model taste teaching aid, including placing case (2) and lift locomotive (4), a serial communication port, lift locomotive (4) set up the lower extreme placing case (2), it has mount (3) to place case (2) inside being fixed with, be equipped with rotating assembly (7) on mount (3), detachably is equipped with magnetism carousel (1) on rotating assembly (7), detachably is equipped with probability subregion dish (23) on magnetism carousel (1), mount (3) front side is equipped with a plurality of violently transfers push rod (8), the tip of violently transferring push rod (8) is equipped with adjusts support (5), be equipped with bow and crossbow subassembly (6) on adjusting support (5), it has placing box (24) to place case (2) inside being fixed with, it inhales dartlike weapon (25) to place inside being equipped with a plurality of magnetism of box (24).

2. The mathematical probability model interesting teaching aid as claimed in claim 1, wherein three side plates of the placing box (2) are hinged box plates, an avoiding area is arranged at the upper end of a front side plate of the placing box (2), the fixing frame (3) is positioned at the inner side of the front side plate, and an electric storage box is arranged inside the placing box (2).

3. The mathematical probability model interesting teaching aid of claim 1, the lifting moving vehicle (4) comprises two frames (9) and an adjusting screw rod (13), two symmetrical X-shaped lifting frames (12) are arranged between the two frames (9), the frame (9) at the upper side is fixed at the lower end of the placing box (2), universal wheels (10) are fixed at four corners of the lower end of the frame (9) at the lower side, one sides of the two X-shaped lifting frames (12) are respectively hinged with the two frames (9), the other sides of the two X-shaped lifting frames (12) are respectively arranged on the two frames (9) in a sliding manner, one end of the adjusting screw rod (13) is rotatably arranged at the upper part of one side of the two X-shaped lifting frames (12), and the end part of the adjusting screw rod (13) is provided with an adjusting handle (11), the other end of the adjusting screw rod (13) is a free end, and the other end of the adjusting screw rod (13) is screwed on the upper part of the other side of the two X-shaped lifting frames (12).

4. The mathematics probability model interesting teaching aid as claimed in claim 2, characterized in that the rotating assembly (7) comprises a mounting rod hinged on the upper end of the fixed frame (3), a rotating motor (14) is fixed on the mounting rod, the upper end of the mounting rod is rotatably provided with a rotating shaft (16), a pulley pair (15) is arranged between the output shaft of the rotating motor (14) and the rotating shaft (16), the end of the rotating shaft (16) is provided with two folding mounting plates (17), the magnetic attraction rotary disc (1) is detachably arranged on the two folding mounting plates (17), and the storage battery box is electrically connected with the rotating motor (14).

5. The mathematical probability model interesting teaching aid as claimed in claim 2, wherein the adjusting bracket (5) comprises a base (18), the base (18) is fixed at the end of a plurality of horizontal adjusting push rods (8), the base (18) is slidably arranged inside the placing box (2), a sliding seat (19) is slidably arranged at the upper end of the base (18), a lifting rod (20) is arranged at the upper end of the sliding seat (19), a hinged seat is arranged at the end of the lifting rod (20), and the horizontal adjusting push rods (8) and the lifting rod (20) are both electrically connected with the storage battery box.

6. A mathematical probability model interesting teaching aid according to claim 5, characterized in that the bow assembly (6) comprises a bow (21) and a arrow (22), the end of the bow (21) is provided with an articulated frame, the articulated frame is articulated on an articulated seat, and the arrow (22) is placed on the bow (21).

Images