CN205405940U - Probability model teaching aid for statistics - Google Patents

Abstract

The utility model relates to a probability model teaching aid for statistics, which comprises a board body, a display groove, a telescopic groove, and a sliding bar corresponding to the telescopic groove. The top surface of the board is provided with longitudinally distributed telescopic slots corresponding to each display slot. The width of the telescopic slot is larger than the width of the display slot. The sliding bar slides up and down and is placed in the telescopic slot. The inner back of the telescopic slot Color-coded on top; also includes hanger for hanging slider. The utility model uses the suspension device to adjust the suspension height of the sliding bar. When the sliding bar rises in the telescopic slot, the indicator color mark in the telescopic slot is displayed through the display slot, which can intuitively express the demonstration of probability, and adjacent display slots can be selected from different Indication of color The color logo makes the demonstration more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability. It has the characteristics of eye-catching and easy to operate during the demonstration.

Description

A Probability Model Teaching Aid for Statistics

technical field

The utility model relates to the technical field of statistics teaching aids, in particular to a probability model teaching tool for statistics.

Background technique

Probability is a relatively abstract concept. In the course of statistical probability, 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.

Utility model content

The technical problem to be solved by the utility model is to provide a statistical probability model teaching aid with simple structure, convenient operation and good demonstration effect.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a probability model teaching aid for statistics, including a board body, a display slot, a telescopic slot, and a sliding bar corresponding to the telescopic slot, and the front of the board body is evenly opened There are several longitudinally distributed display slots, and the top surface of the board is provided with longitudinally distributed telescopic slots corresponding to each display slot, and the display slots communicate with the telescopic slots, and the width of the telescopic slots is larger than that of the display slots The width of the sliding bar slides up and down and is placed in the telescopic groove, and the inner back of the telescopic groove is provided with an indicating color mark; it is characterized in that: it also includes a hanging device for hanging the sliding bar, and the hanging device includes a fixed The hanging ring on the top surface of the sliding bar, the column with external threads, the moving sleeve, the L-shaped connecting rod, the hook and the positioning sleeve with internal threads, the upper part of the board is provided with a top plate, and the top of the column The top end is fixedly connected to the top plate, the moving sleeve moves up and down and is set on the column, the positioning sleeve is located at the lower part of the moving sleeve and is screwed to the column, and the hook is fixed at the bottom of the L-shaped connecting rod , the hanging ring is connected to the moving sleeve through a hook and an L-shaped connecting rod.

On the basis of the above solution, it is preferred to further include a base, the board body is fixed on the base, and the top plate and the base are connected and fixed through the support rods on both sides.

On the basis of the above solution, preferably, one side of the front of the board body is provided with vertically distributed scale lines.

Compared with the prior art, the utility model has the beneficial effects that: the utility model uses the suspension device to adjust the suspension height of the sliding bar. When the sliding bar rises in the telescopic groove, the indicating color mark in the telescopic groove is displayed through the display groove. The demonstration of probability can be intuitively expressed, and the adjacent display slots can be marked with different colors of indication colors. The demonstration is more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability. It has the characteristics of eye-catching and easy to operate during the demonstration.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation of the utility model plate body;

Fig. 3 is a structural schematic diagram of the suspension device of the present invention.

The marks in the figure are: 1-base, 2-top plate, 3-support rod, 4-board body, 41-display slot, 42-telescopic slot, 5-sliding bar, 6-suspension device, 61-column, 62-moving Sleeve, 63-positioning sleeve, 64-L-type connecting rod, 65-hook, 7-graduation line, 8-indicating color identification, 9-hanging ring.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention.

Referring to FIGS. 1 to 3 , a probability model teaching aid for statistics includes a board body 4 , a display slot 41 , a telescopic slot 42 , a sliding bar 5 corresponding to the telescopic slot 42 , a base 1 , and a top board 2 . The plate body 4 is fixed on the base 1, the top plate 2 is placed on the upper part of the plate body 4, and the top plate 2 and the base 1 are connected and fixed by the support rods 3 on both sides; the front side of the plate body 4 is provided with a longitudinally distributed scale line 7 The front of the board body 4 is uniformly provided with several longitudinally distributed display slots 41, and the top surface of the board body 4 is provided with longitudinally distributed telescopic slots 42 corresponding to each display slot 41, and the display slots 41 communicate with the telescopic slots 42 for telescopic The width of the groove 42 is greater than the width of the display groove 41, and the sliding bar 5 slides up and down and is placed in the telescopic groove 42. The inner back of the telescopic groove 42 is provided with an indicator color mark 8;

Suspension device 6 comprises the hanging ring 9 that is fixed on slide bar 5 top surfaces, has the column 61 of external thread, moving sleeve 62, L-type connecting rod 64, hook 65 and the locating sleeve 63 that has internal thread, described The top of the column 61 is fixedly connected to the top plate 2, the moving sleeve 62 is set on the column 61 to move up and down, the positioning sleeve 63 is located at the lower part of the moving sleeve 62 and is screwed to the column 61, and the hook 65 is fixed on the L-shaped connecting rod 64 bottom end, the hanging ring 9 is connected on the moving sleeve 62 by the hook 65 and the L-shaped connecting rod 64. By adjusting the position of the moving sleeve 62 on the column 61, the depth of the sliding bar 5 placed in the telescoping groove 42 can be adjusted, and the positioning sleeve 63 is used to support and position the moving sleeve 62. The structure is simple and the operation is convenient.

The utility model utilizes the suspension device 6 to adjust the suspension height of the sliding bar 5. When the sliding bar 5 rises in the telescopic groove 42, the indicator color mark 8 in the telescopic groove 42 is displayed through the display groove 41, which can intuitively express the demonstration of probability, and Adjacent display slots can be marked with different colors of indication colors, making the demonstration more intuitive and eye-catching, which is conducive to students' understanding and learning of the course of probability, and has the characteristics of eye-catching and easy to operate during the demonstration.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. a statistics probabilistic model teaching aid, including the slider bar that plate body, display channel, telescopic chute are corresponding with telescopic chute, the front of described plate body uniformly offers the display channel of several genesis analysis, the end face of described plate body offers the telescopic chute of the genesis analysis corresponding with each display channel, described display channel is connected with telescopic chute, the width of described telescopic chute is more than the width of display channel, described slider bar slides up and down and is placed in telescopic chute, and the interior back side of described telescopic chute is provided with instruction colour code；It is characterized in that: also include the suspension arrangement for hanging slider bar, described suspension arrangement includes the link being fixed on slider bar end face, with externally threaded column, moving sleeve, L-type connecting rod, link up with and be with female abutment sleeve, the top of described plate body is provided with top board, the top of described column is fixedly connected on top board, what described moving sleeve moved up and down is enclosed within column, described abutment sleeve is positioned at moving sleeve bottom and is threadedly connected on column, described hook is fixed at the bottom of L-type connecting rod, described link is connected on moving sleeve by hook and L-type connecting rod.

2. a kind of statistics probabilistic model teaching aid according to claim 1, it is characterised in that: also including base, described plate body is fixed on base, is connected fixing between described top board and base by the support bar of both sides.

3. a kind of statistics probabilistic model teaching aid according to claim 1, it is characterised in that: the side in described plate body front is provided with the graduation mark of genesis analysis.