A demonstration teaching aid for teaching mathematics and probability

Abstract

The invention relates to the mathematics teaching aid technical field, and specifically relates to a mathematics probability teaching demonstration teaching aid; a simulation needle is a cylinder withtwo ends thinner than the middle part; the front side and back side of a projection needle plate are provided with a plurality of current array distribution parallel lines; two ends of the parallel lines are respectively provided with a laser emitter and a laser receiver; the projection needle plate is arranged on a turning device and driven by same to turn; a box body is arranged below the projection needle plate, and a needle outlet is arranged on the box body bottom; a vertical conveyer is arranged in the needle outlet; a horizontal conveyer is arranged above the vertical conveyer; a horizontal feeder is arranged on one side of the vertical conveyer; the horizontal conveyer is provided with a simulation needle fixing device; the simulation needle length is smaller than the distance between two parallel lines; the laser receiver is electrically connected with a counting chip; the horizontal feeder is connected with the counting chip via a sensor; the counting chip is electrically connected with a display nixie tube, thus automatically finishing a needle projection test.

Description

technical field [0001] The invention relates to the technical field of mathematics teaching teaching aids, in particular to a demonstration teaching aid for mathematics probability teaching. Background technique [0002] Probability, also known as probability, chance rate, chance (probability) or possibility, is a basic concept of probability theory. Probability is a measure of the possibility of a random event occurring, and generally a real number between 0 and 1 represents the possibility of an event occurring. The closer to 1, the event is more likely to occur; the closer to 0, the event is less likely to occur, which is an objective argument rather than a subjective verification. [0003] Probability experiments generally include ball-touching games, coin tosses, turntables, needle-throwing experiments, thumbtack throwing and bottle cap throwing experiments. In 1777, a French scientist (Buffon, Georges Louis, 1707─1788), a calculation proposed by Buffon The method of ...

AI Technical Summary

Problems solved by technology

[0007] 1. There is no special needle throwing probability demonstration device, and the traditional needle throwing experiment is used

[0008] 2. In order to better express the probability and calculate the value of π, a large number of counts are required, and the workload caused by artificial needle injection

[0009] 3. There are human errors in counting

[0010] Some experimental devices in the prior art have more or less defects, such as counting is prone to misrecording, which leads to counting errors

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