Rapid demonstration device for probabilistic science

The utility model discloses a rapid demonstration device for probabilitics, which relates to the technical field of teaching equipment and comprises a demonstration box, a perspective plate is arranged on the front surface of the demonstration box, a funnel plate is mounted in the demonstration box, a plurality of small balls are arranged above the funnel plate, a ball outlet for the small balls to pass through is formed in the middle of the funnel plate, and a plurality of ball holes are formed in the middle of the funnel plate. A ball blocking rod is inserted into the ball outlet, a plurality of blocking columns are arranged below the funnel plate, a plurality of ball collecting grooves are formed below the blocking columns, flashboards are slidably inserted into the bottoms of the ball collecting grooves, infrared counting sensors are arranged on the inner walls of the ball collecting grooves, and a digital display screen is embedded in the front end of each flashboard. A controller is installed on the fro