Monday and Thursday have “multiple” cool things going on this week.

Monday 3/9/15 and Thursday 3/12/15 are multiples of three.

Monday is also a sequence – 3, 9, 15 are each separated by 6’s.

Thursday is also an addition day – 3 + 12 = 15

And, Saturday is PI day.  PI is an irrational number whose decimal representation goes on forever.  An approximation is 3.14, hence 3/14 as PI day.  A closer approximation is 3.1415, so 3/14/15 is THIS YEAR!