Just hit the flag to start! Increase or decrease the speed with the slider. I recommend about 9.
Thanks to Matt Parker at standupmaths on youtube for the idea. Check him out! This uses the infinite series π/4= 1/1 - 1/3 + 1/5 - 1/7 +1/9... Cycles are the number of fractions it has added. For example, if it went up to 1/9 there would have been 5 cycles.
