Roll-A-Rice Normal Distribution

Dr. Fred Strand's best lesson comes back again! Drop grains of rice and watch 'em spread.
Make a histogram & sketch approximate normal curve.
Calculate percent distribution in each column & probability of landing in that column.
Music credits:
Optimistic Corporate
the Yuriy Bespalov
Tropical House
by Yuriy Bespalov
And just like that
by Bryan Teoh