I. The Galton Board is a powerful visual demonstration of the Central Limit Theorem — showing how thousands of random choices can create a predictable bell curve. In this design by Philip Poissant, 6000 steel balls (and one gold bead) fall through 14 levels of pegs, each with a 50/50 chance of bouncing left or right. Over time, the balls accumulate in a pattern that mirrors the binomial distribution, forming a perfect bell curve. The math behind this process is tied to Pascal’s Triangle, where e

The Random Walker http://physicstoys.blogspot.com/p/physics-toy-store.html Second model of two Galton Boards designed and produced by IFA.com- this version is made to demonstrate probability in investment returns of a global stock market portfolio relating to risk capacity. Slow motion reveals the erratic path of each steel ball (second half of video). The red graph shows the distribution of 592 monthly returns (mean =1%, SD=5%) representing data from 50 years of an IFA Index fund- here the rand