**Random Walk Model**

**What it shows:**

A random walk is a mathematical model for the movement of a particle that is under the influence of some random or stochastic mechanism that affects its direction of movement. Physical situations that can be described by random walks include diffusion and Brownian motion.

**How it works:**

The board is a two dimensional random walk model consisting of a hexagonal array of corks, ^{1} 11 to a side (331 corks in all), with each point of the hexagon given a number. The random walk begins from the center cork and...