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 discloses a probability model teaching aid used in mathematics teaching in a university and belongs to the field of teaching appliance technology. The probability model teaching aid has a characteristic of visual and easy demonstration and is easy for students to fast understand and grasp the curriculum of probability. A rectangular frame is fixed on the top surface of a pedestal. A drawer is disposed on the front side surface of the pedestal. A rubber gasket is laid in the rectangular frame and is bonded on the top surface of the pedestal. The rectangular frame is separated into multiple blank spaces with same shapes and sizes by multiple separating battens. The blank spaces are arranged in an array manner. Circular holes and conical holes are processed from top to bottom on the centers of the blank spaces on the rubber gasket. The diameter of the top end of the conical hole is more than that of the bottom end of the conical hole but less than that of the circular hole. The centers of the outer surfaces of spheres are fixedly connected with one ends of connecting rods. The ends of the connecting rods are cylinders while the other ends of the connecting rods are cones. The cone ends of the connecting rods are inserted into the conical holes of the rubber gasket. The probability model teaching aid is used for demonstration in a probability curriculum in mathematics teaching in a university.

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. College Mathematics Teaching probability model teaching aid, it is characterized in that: 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), 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) one ends of connecting link (9) and the conical bore (7) of rubber blanket (3) are pegged graft.

2. a kind of College Mathematics Teaching probability model teaching aid as claimed in claim 1, it is characterized in that: 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).