Probability statistics teaching demonstration device

Abstract

The invention discloses a probability statistics teaching demonstration device, and relates to a teaching instrument. The device comprises a box body and a base, a top end seat is arranged right abovethe box body, a left end seat is arranged right on the left side, and a right end seat is arranged right on the right side; a top end electromagnetic coil, a left end electromagnetic coil and a rightend electromagnetic coil are correspondingly arranged on the top end seat, the left end seat and the right end seat respectively; a fixing shaft is further arranged in a cavity of the box body, a plurality of swing arms are arranged on the fixing shaft in a sleeved mode, a magnetic metal ball is correspondingly fixed to the tail end of each swing arm, infrared sensors are further symmetrically arranged on the inner wall of the box body, and an MCU module and a digital counter are further arranged on the outer wall of the box body. The teaching demonstration device is relatively simple in overall structure, moderate in size, convenient to operate and use, high in automation degree and good in interestingness.

Description

Technical field [0001] The invention relates to a teaching apparatus, in particular to a teaching demonstration device of probability statistics. Background technique [0002] In mathematics teaching, probability and statistics are often difficult for students to understand because of its abstractness, and the probability event demonstration model provides intuitive graphics or principle demonstrations for mathematics teaching. At present, most of the probability and statistics demonstration models used in mathematics teaching are traditional coin-toss models or ball-dropping demonstration models. Such models are not only large in size and heavy in weight, but also cumbersome to operate. Most of their statistical methods are relatively large. Originally, manual statistical methods are mostly used, and the statistical results are prone to errors; at the same time, due to its inconvenience, a lot of class hours are wasted in the statistics of multiple random events. For example, t...

AI Technical Summary

Problems solved by technology

At present, most of the probability and statistics demonstration models used in mathematics teaching are traditional coin-tossing models or ball-dropping demonstration models. Such models are not only large in size and heavy in weight, but also cumbersome to operate, and their statistical methods are mostly relatively complex. Original, manual statistics are often used, and the statistical results are prone to errors; at the same time, due to its inconvenient operation, a lot of class time is wasted in the statistics of multiple random events

For example, the application number is: CN201721739247.0 discloses a device for demonstration teaching of mathematical probability and statistics, which uses a coin-like method, which takes too long, and is not interesting and automatic

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