A student takes a random walk on a number line determined by flips of a fair coin: one step
forward with a flip of a heads, and one step back with a flip of tails. After students propose
questions about an individual’s random walk, the whole class, joined by other students if
possible, conducts a simultaneous random walk. Students arrive in various locations on the
number line and then walk into columns to create a human bar graph that records their final
location. Students then investigate the theoretical probabilities involved in the random walk.