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Easy as Pi: 31.4% off our math and science books

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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.

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Easy as Pi… 31.4% Off Our Math and Science Books

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In 2009, Congress recognized March 14 as National Pi Day…but it’s always been a holiday to math teachers.

(And just in case you don’t have the first few digits of Pi memorized: 3.1415926…)

As we close in on this special date, 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 14-19 and save 31.4% off the list price of our math and science professional books.

Full details

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 14–19, 2016

Area of a circle: 2πr2

Easy as Pi… Take 31.4% Off Our Math Books

Every year as February turns to March, we circle one day on our calendar: March 14. Pi Day! While Congress officially recognized this is as "National Pi Day" in 2009, it's always been a holiday to us mathematicians.

(And just in case you don't have the first few digits of Pi memorized: 3.1415926535…)

The formula for saving is simple! Use the coupon code PIDAY at online checkout during the week leading up to March 14, 2015 and save 31.4% on all math professional books.

Full details

Code: PIDAY at online checkout
Offer: 31.4% off list price for math professional books
Not applicable: Bundles, Firsthand products, and ancillaries
Quantity: No limit
Duration: March 8-14
Area of a circle: 2πr2