CN204516157U - A kind of College Maths probability model teaching aid - Google Patents

Abstract

The utility model discloses a university mathematical probability model teaching aid, which comprises a base, a probability board, a strip column, a telescopic rod and a stretching board, and is characterized in that: the left side of the probability board is provided with a scale, and the probability board is evenly distributed in three directions vertically. More than one chute, the chute is located in the 2/3 part of the probability plate from the front to the back, the left and right sides of the chute are provided with raised rectangular columns, and the rear of the chute is provided with different colors; the top of the bar column is provided with There is a pull ring, and grooves corresponding to the protruding rectangular columns in the chute of the probability plate are provided on both sides of the bar column; the telescopic rod is a telescopic rod with a thin middle and large ends; the stretch plate is also equipped with Fan-shaped diagram, and there is a handle on the right side of the stretching plate; the university mathematics probability model teaching aid can see different colors in the chute by adjusting the bar column, and further, the telescopic rod changes with the bar column, which can be expressed intuitively The demonstration of probability is more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability. The demonstration is eye-catching and easy to operate.

Description

A Teaching Aid for University Mathematics Probability Model

technical field

The utility model relates to a teaching device, in particular to a teaching tool for a university mathematical probability model, which belongs to the technical field of teaching tools.

Background technique

Probability cause is a relatively abstract concept. In college mathematics probability theory courses, if we can use probability teaching aids to demonstrate and explain, it will make it easier for students to understand and master it. At present, because there are no suitable teaching aids for probability teaching, students can only rely on the teacher to explain the theory of probability. This teaching method makes the students' understanding and mastery of probability not high, and the teacher is also very difficult in the process of explaining. . Therefore, be badly in need of a kind of teaching aid and carry out coordinating teaching with probability teaching aid.

Contents of the invention

The purpose of this utility model is just to provide a kind of college mathematics probability model teaching aid in order to solve the above problems.

The utility model achieves the above object through the following technical solutions: a university mathematical probability model teaching aid, comprising a base, a probability plate, a strip column, a telescopic rod and a stretching plate, characterized in that: the probability plate is fixedly connected to the base, Both the strip column and the stretching plate are connected to the probability plate in the form of a chute, and the two ends of the telescopic rod are respectively connected to the bottoms of different strip columns in rotation.

Preferably, a scale is provided on the left side of the probability plate, and more than three chutes are evenly distributed longitudinally on the probability plate, and the chutes are located in the 2/3 part of the probability plate from the front to the back, and the left and right sides of the chute are provided with raised rectangular columns , and different colors are provided at the rear of the chute.

Preferably, a pull ring is provided on the top of the bar column, and grooves corresponding to the raised rectangular columns in the probability plate chute are provided on both sides of the bar column.

Preferably, the telescopic rod is a telescopic rod with a narrow middle and large ends.

Preferably, the stretching plate is also provided with a fan-shaped figure, and a handle is provided on the right side of the stretching plate.

Compared with the prior art, the utility model has the beneficial effects that: the teaching aid of the university mathematical probability model integrates a bar statistical chart, a broken line statistical chart and a sectoral statistical chart, and vividly demonstrates different types of probabilities. The bar column can see different colors in the chute. Further, the telescopic rod changes with the bar column, which can intuitively express the demonstration of probability. The demonstration is more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability. It is eye-catching and easy to operate when demonstrating.

Description of drawings

Fig. 1 is the structure diagram after opening described in the utility model;

Fig. 2 is a schematic diagram of the folded structure of the utility model;

Among the figures: 1. Base, 2. Probability board, 3. Bar column, 4. Telescopic rod, 5. Stretch board, 21. Scale, 31. Pull ring, 51. Fan diagram, 52. Handle.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1 ~ 2, a kind of college mathematics probability model teaching aid, comprises base 1, probability plate 2, bar column 3, telescoping rod 4 and stretching plate 5, and described probability plate 2 is fixedly connected with base 1, and described Both the bar column 3 and the stretching plate 5 are connected to the probability plate 2 in the form of a chute, and the two ends of the telescopic rod 4 are respectively connected to the bottoms of different bar columns 3 in rotation; the left side of the probability plate 2 is provided with a scale 21. Different units can be marked according to different types. The probability plate 2 is evenly distributed in the longitudinal direction with more than three chutes. The chute is located in the 2/3 part of the probability plate 2 from the front to the back. There are raised rectangles on the left and right sides of the chute. column, and the rear part of the chute is provided with different colors, which is convenient for students to distinguish; The groove corresponding to the protruding rectangular column in the chute; the telescopic rod 4 is a telescopic rod 4 with thin middle ends and large telescopic rods 4, which makes the generated broken line diagram more vivid; the stretching plate 5 is also provided with a sector diagram 51 , and the right side of the stretching plate 5 is provided with a handle 21; the university mathematics probability model teaching aid integrates a bar chart, a broken line chart and a sector chart, and vividly demonstrates different types of probabilities. The different colors in the chute can be seen in the shaped column. Further, the telescopic rod changes with the bar column, which can intuitively express the demonstration of probability. The demonstration is more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability. In the demonstration It is eye-catching and easy to operate.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. A university mathematical probability model teaching aid, comprising a base (1), a probability plate (2), a bar column (3), a telescopic rod (4) and a stretch plate (5), characterized in that: the probability plate (2) Fixedly connected with the base (1), the strip column (3) and the stretch plate (5) are connected with the probability plate (2) in the form of a chute, and the two ends of the telescopic rod (4) are respectively It is connected with the bottom rotation of different bars (3). 2. A university mathematics probability model teaching aid according to claim 1, characterized in that: the left side of the probability board (2) is provided with a scale (21), and the probability board (2) is evenly distributed longitudinally with more than three slides. The chute is located at the 2/3 part of the probability plate (2) from the front to the back. The left and right sides of the chute are provided with raised rectangular columns, and the rear of the chute is provided with different colors. 3. A university mathematical probability model teaching aid according to claim 1, characterized in that: the top of the bar (3) is provided with a pull ring (31), and the two sides of the bar (3) are provided with a sum probability A groove corresponding to the raised rectangular column in the chute of the plate (2). 4. A university mathematical probability model teaching aid according to claim 1, characterized in that: the telescopic rod (4) is a telescopic rod (4) with a thin middle and large ends. 5. A kind of college mathematics probability model teaching aid according to claim 1, characterized in that: a fan-shaped diagram (51) is also provided on the stretching board (5), and a Handlebar (52).