Portable mathematical probability demonstrator

A demonstrator, portable technology, applied in the field of mathematics, can solve problems such as teachers' difficulty in explaining, inability to install multimedia, etc., and achieve the effect of easy understanding, easy replacement, and convenient use

Inactive Publication Date: 2018-07-24
马一铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Probability is an important theoretical knowledge in the field of mathematics. At present, histograms are often used to display and express probability. At present, multimedia is usually used to express probabili

Method used

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  • Portable mathematical probability demonstrator
  • Portable mathematical probability demonstrator

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Embodiment

[0031] A portable mathematical probability demonstrator, comprising a base plate 1, a motor 2 is arranged at the center of the top surface of the base plate 1, the output shaft of the motor 2 is connected to the bottom of a vertically arranged rotating rod 3, and the rotating rod The top of 3 is fixedly connected with the central position of the bottom of rotating cylinder 4, and the bottom of described rotating cylinder 4 is provided with several vertically arranged telescopic rods 34, and the bottom of described telescopic rods 34 is equipped with universal wheels 35. Nine lightweight hollow balls 5 are arranged in the drum 4, and numbers 1 to 9 are marked on the hollow balls 5 in turn, and an inverted "U"-shaped placement plate 6 is arranged above the drum 4, and the Base plate 1 and the bottom corresponding position of placing plate 6 offer first slot 7, the bottom of described placing plate 6 can enter in the first slot 7, and the top central position of described drum 4 o...

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PUM

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Abstract

A portable mathematical probability demonstrator comprises a bottom plate, wherein a motor is arranged on the bottom plate; the motor is connected with a rotating rod; the rotating rod is connected with a rotating drum; hollow spheres are arranged inside the rotating drum; a placing plate is arranged above the rotating drum; a through hole is formed in the top of the rotating drum; a vertical tubeis arranged on the placing plate; a suction fan is arranged on the vertical tube; a counting plate is arranged above the placing plate; a horizontal fixing plate is arranged behind the counting plate; a display board is arranged on the fixing plate; grooves are formed in the front side of the display board; cloth strip slots are formed in the bottoms of the grooves; cloth strips are arranged inside the cloth strip slots; the cloth strips are fixedly connected with moving rods; the moving rods are positioned inside the grooves; sliding slots are formed in positions, corresponding to the movingrods, of the two side walls of the grooves; the two ends of the moving rods can move up and down along the corresponding sliding slots; the central positions of the tops of the moving rods are connected to one ends of pull ropes; vertical pull rope slots are formed in the tops of the grooves; the pull ropes can run through the pull rope slots; the other ends of the pull ropes can be positioned onthe upper side of the display board. The portable mathematical probability demonstrator is convenient for a teacher to explain the probability through a histogram conveniently, rapidly and vividly.

Description

technical field [0001] The invention belongs to the field of mathematics, in particular to a portable mathematical probability demonstrator. Background technique [0002] Probability is an important theoretical knowledge in the field of mathematics. At present, histograms are often used to display and express probability. At present, multimedia is usually used to express probability with histograms in the teaching process. However, due to limited educational resources in many schools, it cannot be installed. Multimedia makes it difficult for teachers to explain in the teaching process. Contents of the invention [0003] The invention provides a portable mathematical probability demonstrator to solve the defects in the prior art. [0004] The present invention is achieved through the following technical solutions: [0005] A portable mathematical probability demonstrator, comprising a base plate, a motor is arranged at the center of the top surface of the base plate, the ...

Claims

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Application Information

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IPC IPC(8): G09B23/02
CPCG09B23/02
Inventor 马一铭
Owner 马一铭
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