Mathematical probability demonstration device

Abstract

The invention relates to a mathematical probability demonstration device. The mathematical probability demonstration device comprises a bottom seat plate, a fixing plate is arranged at the upper end of the bottom seat plate, connecting plates are arranged on the left side and the right side of the front end of the fixing plate, a support plate is arranged at the upper ends of the connecting plates, support rods are arranged on the right sides of the upper end of the support plate, a placing part is arranged at the upper end of the support rods, the placing part is internally provided with a throwing part, mounting holes are formed in the upper end and the lower end of the throwing part, a first pipeline is arranged on the outer side of the lower end mounting hole, a second pipeline is arranged at the left end of the first pipeline, one end of a first elbow pipe is arranged at the left end of the second pipeline, the other end of the first elbow pipe is provided with a third pipeline, one end of the second elbow pipe is arranged at the right end of the third pipeline, one end of a fourth pipeline is arranged at the other end of the second elbow pipe, a fifth pipeline is arranged atthe other end of the fourth pipeline, a first shunting pipe is arranged at the lower end of the fifth pipeline, sixth pipelines are arranged on the left side and the right side of the lower end of thefirst shunting pipe, seventh pipelines are arranged at the lower ends of the left sixth pipeline and the right sixth pipeline, second shunting pipes are arranged at the lower ends of the left seventhshunting pipe and the right seventh shunting pipe, and out-guiding pipes are arranged on the left sides and the right sides of the lower ends of the second shunting pipes.

Description

technical field [0001] The invention relates to the field of teaching tools, in particular to a mathematical probability demonstration device. Background technique [0002] Probability is a concept defined by people according to the law of random events, which is difficult to be understood and convinced by students. Therefore, it is necessary to cooperate with the results of simple probability demonstration experiments to help students understand. The most common probability demonstration experiment is the coin toss experiment. Toss a coin, and the probability of getting one side up is 1 / 2. At present, during the demonstration process, the coin has to be picked up and thrown out many times. The coin often rolls far after landing, and it takes a lot of time to find trouble. , for the rigor of the experiment, the teacher will also prepare a large number of coins in advance and distribute them to the students one by one, let the students toss the coins separately and count in t...

AI Technical Summary

Problems solved by technology

[0002] Probability is a concept defined by people according to the law of random events, which is difficult to be understood and convinced by students. Therefore, it is necessary to cooperate with the results of simple probability demonstration experiments to help students understand. The most common probability demonstration experiment is the coin toss experiment. Toss a coin, and the probability of getting one side up is 1 / 2. At present, during the demonstration process, the coin has to be picked up and thrown out many times. The coin often rolls far after landing, and it takes a lot of time to find trouble. , for the rigor of the experiment, the teacher will also prepare a large number of coins in advance and distribute them to the students one by one, let the students toss the coins separately and count in turn whether each student faces the number or the national emblem. Through a large number of experiments, the rigor of the experiment can be guaranteed , but it takes a lot of time. Another method is to demonstrate the probability problem through the random selection of the sphere. The sphere randomly enters different powder pipelines through the pipeline to demonstrate the probability, but the sphere will roll in the process of rolling in the pipeline. Orientation rotation, which affects the probability of the sphere going into different pipes

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