CN203013047U

CN203013047U - A probability model teaching aid used in mathematics teaching in a university

Info

Publication number: CN203013047U
Application number: CN 201320022642
Authority: CN
Inventors: 冯玉铁; 姜文彪
Original assignee: Heilongjiang University of Science and Technology
Current assignee: Heilongjiang University of Science and Technology
Priority date: 2013-01-16
Filing date: 2013-01-16
Publication date: 2013-06-19
Anticipated expiration: 2023-01-16

Abstract

The utility model relates to a probability model teaching aid for university mathematics teaching. It belongs to the technical field of teaching aids. The probability model teaching aid is intuitive and convenient for demonstration, which is convenient for students to quickly understand and master the course of probability. The rectangular four-frame is fixed on the upper surface of the base, and the front side of the base is provided with drawers. The rubber pad is laid in the rectangular four-frame and bonded to the upper surface of the base. The rectangular four-frame is divided into multiple Spaces with the same shape and size, multiple spaces are arranged in a matrix, and the center of each space on the rubber pad is processed with round holes and conical holes from top to bottom. The diameter of the upper end of the conical hole is larger than that of the lower end. The aperture is smaller than the diameter of the circular hole. The middle part of the outer surface of the sphere is fixedly connected with one end of the connecting rod. socket. The utility model is used for demonstration in the probability class of university mathematics.

Description

A kind of College Mathematics Teaching probability model teaching aid

Technical field

The utility model relates to a kind of mathematical education probability model teaching aid, belongs to the teaching aid technical field.

Background technology

Probability is because being the comparison abstract concept, and the single explanation theoretically of teacher is not easy to be understood by the student, and the teacher explains also very hard.In College Maths theory of probability course, if can explain by the probability model teaching aid, can make the student easily understand and grasp.And up to now, also be not applicable to College Mathematics Teaching probability model teaching aid.

The utility model content

The purpose of this utility model is to provide a kind of College Mathematics Teaching probability model teaching aid, and the characteristics of using this probability model teaching aid to have intuitively, conveniently demonstrate are convenient to student's fast understanding and are grasped this subject of probability.

Realize above-mentioned purpose, the technical scheme that the utility model is taked is:

a kind of College Mathematics Teaching probability model teaching aid, described probability model teaching aid comprises by four side plates and connects successively rectangle four frames that surround, rectangle four frames are fixed on the upper surface of base, the leading flank of base is provided with drawer, rubber blanket is mated formation in rectangle four frames and is bonding with the upper surface of base, be divided into a plurality of shapes and space of the same size by a plurality of separation battens in rectangle four frames, a plurality of spaces are the matrix form setting, the center that is positioned at each space on rubber blanket is processed with circular hole and conical bore from top to bottom, the aperture, upper end of conical bore is greater than the aperture, lower end, the aperture, upper end of conical bore is less than the aperture of circular hole, be fixedly connected with an end of connecting link in the middle part of the outside surface of spheroid, the described end of connecting link is right cylinder, the other end of connecting link is cone, cone one end of connecting link and the conical bore of rubber blanket are pegged graft.

The Corner Strapped of the lower surface of base has four supporting legs, and the lower surface of each supporting leg is fixed with sucker.

The utility model with respect to the beneficial effect of prior art is: 1, spheroid is connected or dismantles all more convenient with rubber blanket on base, in upper probability class, the teacher utilizes the demonstration of probability model teaching aid more directly perceived, more eye-catching, is beneficial to student's understanding and grasps this subject of probability.2, the leading flank at base arranges drawer, can conveniently spheroid and other realia be positioned in drawer, is convenient to keeping and uses.

Description of drawings

Fig. 1 is the utility model College Mathematics Teaching probability model teaching aid one-piece construction vertical view;

Fig. 2 is Fig. 1 front view;

Fig. 3 is the regional partial enlarged drawing of a of Fig. 2.

Wherein, 1-rectangle four frames; The 2-base; The 3-rubber blanket; 4-separates batten; The 5-space; The 6-circular hole; The 7-conical bore; The 8-spheroid; The 9-connecting link; The 10-right cylinder; The 11-cone; The 12-supporting leg; The 13-sucker; The 14-drawer; The 15-handle.

Embodiment

as Fig. 1～shown in Figure 3, a kind of College Mathematics Teaching probability model teaching aid, described probability model teaching aid comprises by four side plates and connects successively rectangle four frames 1 that surround, rectangle four frames 1 are fixed on the upper surface of base 2, the leading flank of base 2 is provided with drawer 14, the lateral surface of drawer 14 is fixed with handle 15, rubber blanket 3 is mated formation in rectangle four frames 1 and is bonding with the upper surface of base 2, be divided into a plurality of shapes and space of the same size 5 by a plurality of separation battens 4 in rectangle four frames 1, a plurality of spaces 5 are the matrix form setting, the center that is positioned at each space 3 on rubber blanket 3 is processed with circular hole 6 and conical bore 7 from top to bottom, the aperture, upper end of conical bore 7 is greater than the aperture, lower end, the aperture, upper end of conical bore 7 is less than the aperture of circular hole 6, be fixedly connected with an end of connecting link 9 in the middle part of the outside surface of spheroid 8, the described end of connecting link 9 is right cylinder 10, the other end of connecting link 9 is cone 11, cone 11 1 ends of connecting link 9 and the conical bore of rubber blanket 37 are pegged graft, the Corner Strapped of the lower surface of base 2 has four supporting legs 12, and the lower surface of each supporting leg 12 is fixed with sucker 13.When probability model teaching aid of the present utility model being placed on when demonstrating on desktop, can guarantee the steadiness that is connected with desktop.

Every row of probability teaching aid of the present utility model is provided with 8～10 spaces, and every row are provided with 8～10 spaces.

In upper probability class, during the probability that occurs with spheroid 8 demonstration events when needs, only need cone 11 1 ends of the connecting link 9 that will be fixedly connected with spheroid 8 to be inserted in the conical bore 7 of rubber blanket 3 of relevant position.The quantity that spheroid 8 uses and distribution are determined according to the probability that the demonstration event occurs.

Claims

1. a probability model teaching aid for college mathematics teaching is characterized in that: the probability model teaching aid comprises four rectangular frames (1) connected successively by four side plates, and the four rectangular frames (1) are fixed on the base ( 2), the front side of the base (2) is provided with a drawer (14), the rubber pad (3) is paved in the rectangular four-frame (1) and bonded with the upper surface of the base (2), the rectangular four-frame (1) is divided into multiple spaces (5) of the same shape and size by a plurality of partition strips (4), the multiple spaces (5) are arranged in a matrix, and each space (3) is located on the rubber pad (3) ) is processed from top to bottom with a circular hole (6) and a conical hole (7), the upper end aperture of the conical hole (7) is greater than the lower end aperture, and the upper end aperture of the conical hole (7) is smaller than the circular hole (6) aperture, the outer surface middle part of the sphere (8) is fixedly connected with an end of the connecting rod (9), the described one end of the connecting rod (9) is a cylinder (10), and the other end of the connecting rod (9) is a cone (11 ), one end of the cone (11) of the connecting rod (9) is inserted into the conical hole (7) of the rubber pad (3).

2. a kind of probability model teaching aid for university mathematics teaching as claimed in claim 1, is characterized in that: the four jiaos of the lower end surface of base (2) are fixed with four supporting legs (12), each supporting leg (12) The lower end surface is fixed with a suction cup (13).