Happy Pi Day! I just found out that the celebration of Pi Day was actually started 28 years ago at Exploratorium museum in San Francisco. The day celebrates the neverending number 3.14159 and Einstein’s birthday.
Exploratoium shares the celebration by offering FREE admission to the museum with πthemed activities, rituals, antics, and plenty of pie. For a schedule of events click here.
I shared this information last year and think it’s great a way of explaining to the day to kids – so I’m sharing it again! Be sure to look at the bottom of this post for some Pi Day Deals.
I love this explanation of Pi Day from julieverse.com .
Pi is the ratio of a circle’s circumference with its diameter or the distance around the outside of the circle is the same distance as going from one side of the circle to the other side (making sure to go through the center) “three plus a little bit more” times. The actual number is a never ending decimal that is most often rounded to 3.14. Pi Day is known throughout the mathematical community as March (third month) 14.
Here’s a great visual explanation of Pi from Wikipedia:
A visual explanation of Pi from Wikipdeia 
For our reading time, I called my favorite book store Once upon a Storybook and found the perfect book for the day “Sir Cumference and the Dragon of Pi”.
Experiment: Since I get the most from handson learning, this experiment from PBS.org goes hand in hand with the book.
Or you can use jar, lids, toilet paper rolls…anything circular for this experiment from exploratorium.edu, brings it all together.
Cutting π  
Materials circular object string scissors tape

Crafts: For the little’s in your life, I like this Pi art project from momgineer.blogspot.com that shows the infinite possibilities of Pi.
Also from momgineer.blogspot.com these bracelet’s will work great for my 8 year old.
And of course, it comes down to food! Here are some Pi food deals:

All Blaze Pizza locations celebrate $3.14 Pizza Pi’s
 You can save $3.14 on a large pie from Whole Foods bakery or take $2 off any large “take and bake” pizza. This deal is good for a limited time and excludes frozen pizzas.
 For more great Pi deals visit gobankingrates.com you’ll find details on deals at places Chuck E. Cheese, Papa John’s, Marie Callender’s and more.