Mathematical probability demonstration device

Abstract

The invention discloses a mathematics probability demonstration device. The device comprises a box body, wherein a movable groove is formed in an inner cavity of the box body, a spring is fixedly connected to the bottom of the inner cavity of the movable groove, a placement plate is fixedly connected to the top of the spring, and hanging rings are fixedly connected to the two sides of the bottom of the placement plate; mounting grooves are formed in the two sides of an inner cavity of the movable groove correspondingly, and electric telescopic rods are fixedly connected to the bottoms of innercavities of the mounting grooves. Through cooperative use of the box body, the movable groove, the spring, the placement plate, the hanging ring, the mounting groove, an electric telescopic rod, a motor, a threaded rod, a threaded pipe, a control switch, a first counting key, a second counting key, a first display screen, a second display screen and a third display screen, coins can be automatically thrown and scattered; moreover, the front and back surfaces of the coins can be counted, the probability can be calculated, the efficiency of teaching work is ensured, the coins cannot be lost, and great convenience is brought to the teaching work.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a mathematical probability demonstration device. Background technique [0002] Mathematics is a subject that studies concepts such as quantity, structure, change, space, and information. Observation of the shape and motion of objects. Mathematics has become a part of education in many countries and regions. It is applied in different fields, including science, engineering, medicine, economics and finance. Mathematicians also study pure mathematics. , is the substantive content of mathematics itself, and does not aim at any practical application. Probability needs to be taught in mathematics teaching, but the existing teaching methods generally use the teacher to manually flip coins for demonstration work, so that Not only is the teaching efficiency low, but it may also cause the loss of coins, which brings great inconvenience to the teaching work. Contents of the inventi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a mathematical probability demonstration device, which has the advantages of high efficiency, and solves the problem that the existing teaching methods generally use the teacher to manually throw coins for demonstration work, so that not only the teaching efficiency is low, but also may cause The loss of coins has brought great inconvenience to the teaching work

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