Novel mathematical probability statistics principle fitting degree demonstration device

Abstract

The invention provides a novel mathematical probability statistics principle fitting degree demonstration device, which comprises a base, a demonstration device, a shielding mechanism, a storage box body, a book clamping mechanism, a paper clamping mechanism and a rotating mechanism, and is characterized in that the demonstration device is configured to demonstrate the mathematical probability statistics principle fitting degree; the shielding mechanism is configured to shield the demonstration device, the storage box body is configured to collect materials, the book clamping mechanism is configured to clamp books, the paper clamping mechanism is configured to clamp paper, and the rotating mechanism is configured to drive the storage box body to rotate. The demonstration device and the shielding mechanism are both located in the base. By arranging the book clamping mechanism and the paper clamping mechanism, when a teacher inputs data, paper or books are respectively fixed through the book clamping mechanism and the paper clamping mechanism, so that the teacher can operate the demonstration display screen with two hands, and great convenience is provided for the teacher to input the data.

Description

technical field [0001] The invention relates to the technical field of teaching devices, in particular to a novel mathematical probability statistics principle fitting degree demonstration device. Background technique [0002] In multiple experiments, P is relatively stable at a certain value, and P is called the probability of A appearing. If the probability of an accidental event is determined through long-term observation or a large number of repeated experiments, this probability is statistical probability or empirical probability. In the process of mathematics teaching, the teacher will use the fitting degree device to carry out statistics and principle fitting demonstrations of mathematical probability. [0003] Such as CN110148316B prior art discloses a new type of mathematical probability statistics principle fitting degree demonstration device, the right end of the base plate is embedded with a control panel and control buttons, the base plate is connected to the f...

AI Technical Summary

Problems solved by technology

[0004] Although the device is convenient for demonstrating the fitting degree, when it is used, the teacher needs to hold the paper and books with data or directly put the paper and books on the table, so that the data to be demonstrated can be input to the demonstration display However, holding the paper, the teacher can only input the data into the demonstration display screen with one hand, and put it on the table, and the teacher needs to raise and lower his head frequently. Neither of these two methods is convenient for the teacher to operate the demonstration display screen;

[0005] And after the d

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