In 2009, Congress officially recognized 3/14 as National Pi Day…but it’s always been a day math teachers have circled on their calendars.
(And just in case you don’t have the first few digits of Pi memorized: 3.1415926…)
As we close in on this special day, we’re preparing to once again spread some Pi Day cheer. The formula for saving is simple! Use the coupon code PIDAY at online checkout from March 12-18 and save 31.4% off the list price of our math and science professional books.
Check out some of our newest titles:
Code: PIDAY at online checkout
Offer: 31.4% off list price for math and science professional books
Not applicable: Bundles, curricular resources, eBooks, and ancillaries
Quantity: No limit
Duration: March 12-18, 2017
Area of a circle: 2πr2