Pi Day

Monday is March 14 — aka 3/14 — a k a Pi Day, a day to celebrate math, often with a slice of yummy dessert. You likely remember pi from middle school or ...

"There were many ancient civilizations that used approximations of pi in calculations, but it was Archimedes who was the first to do a calculation of pi," Smith explains. The word for the tasty dessert — pie — comes from "magpie," like the bird. That originally came from the Latin, "pica." The story gets pretty long from there. "It was organized by a physicist named Larry Shaw out in San Francisco," Smith reports. "For example, NASA uses pi regularly to calculate trajectories of space craft. It's also used nowadays when any kind of building construction is going on — anything that is circular or has circular parts, like arches or circular pillars — where those kinds of calculations have to be done."

For math lovers, it's a chance to celebrate Pi, one of the most important numbers ever, representing the ratio of a circle's circumference to its diameter.

The Exploratorium said it added a celebration of Einstein's life as part of its Pi Day activities after Shaw's daughter, Sara, realized the coincidence. The museum said Shaw led Pi Day parades there every year until his passing in 2017. Albert Einstein was born on this day in 1879. Although Pi is typically rounded up to 3.14, it can go on forever. Pizza pie. Apple pie.

Pi Day, not to be confused with National Pie Day in January or National Pizza Day in February, means deals on pizza, pastries and more.

Round Table Pizza is celebrating Pi Day with an offer for a $3.14 Personal Cheese Pizza Monday. The deal is available to new and existing loyalty members. New and existing Your Pie Rewards members will get an offer for $3.14 off one 10-inch pizza to redeem in-store or online Monday through March 16. Blaze Pizza is giving new and existing Blaze Rewards members any 11-inch pizza for $3.14 with a one-time reward on the chain's app. McDonald's says on its website that you'll get a free large fries when you download the app and join MyMcDonald’s Rewards through March 31. The deal will be refreshed daily. The deal will refresh daily. McDonald's has several ongoing deals on its app and with the MyMcDonald's Rewards program. Chuck E. Cheese said its Spring-tastic Family Fun Pack is available for Pi Day and through April 24 for delivery or carryout. Locations that will not accept the deal are listed on the coupon website. Get any whole pizza for $3.14, including cheese, pepperoni or 7-Meat at participating 7-Eleven and Speedway stores. Many deals require you to have a restaurant's app or be signed up for emails. To be on the safe side, always check with your closest location before heading out.

NATIONAL PI DAY. No, not the kind of pie that you eat, instead March 14 is reserved each year to recognize the first three digits of the mathematical ...

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March 14 is Pi Day. It's a delicious excuse to celebrate an enduring culinary concept -- that is, the many edible varieties of pie around the world.

Layers of flaky phyllo also form the crust for Albanian burek or byrek, savory pies that can be filled with everything from ground meat to spinach and cheese. While the original recipe (spelled banoffi) calls for a pastry crust, many iterations use a biscuit or graham cracker crust instead. Adding fresh corn kernels to a sweet custard or chess pie filling is a common theme for bakers and gardeners making the most of late summer produce. Spanakopita is one of the most well-known, featuring a spinach and feta filling inside flaky phyllo dough, but there's also its cousin hortopita, made with wild greens; tiropita, a savory cheese pie; and maridopita, a fish pie. The British and their colonies seem to have perfected the art of the meat pie. In ancient Rome, early meat pies used dough merely as a vessel for preserving the meat's tenderness, not for eating with the filling.

Satechi is celebrating Pi Day with a new coupon code that takes 25 percent off sitewide for today only. In order to get the discount, you can shop...

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