Buffon's needle is an experiment developed in the 18th century as a way to determine an approximation to the value of Pi.
In a sheet of paper where evenly spaced paralel lines are drawn a needle of a certain size is dropped. What's the probability that the needle crosses (at least) one line? The answer depends on the length of the needle and also on Pi. By performing lots of independent tries (hundreds or thousands) one can use the number of crosses to estimate a numerical approximation of Pi.
This document includes a Buffon's needle toss simulator using only TI-Nspire's geometry application and a spreadsheet.
Download the Buffon's Needle Simulator in: