March 14, the mathematic high holiday known as Pi Day, is right around the corner. To celebrate everyone's favorite irrational number, we've rounded up some gifts to help the math aficionados in your life—the ones who know that pi is the ratio of the circumference of a circle to its diameter—observe Pi Day in proper fashion.

1. Pi Pie Pan; $25

A pi-shaeed pie tin
Pi People/Amazon

If Pi Day passed and you didn't eat a pi pie, did Pi Day even happen? This specially shaped baking pan makes the equivalent volume of a 9-inch round pan, but obviously has more surface area than a standard pan. Pi puns and extra crust? Sounds like a win-win dessert.

Buy it: Amazon

2. Pi Puns Ruby Dress; $60

A dress with pi puns on it.

Made with eco-friendly dyes, this dress is decked out in colorful illustrations of pi puns—there’s a pumpkin pi, pizza pi, and octopi. You’ll also find a matching baby jumpsuit ($13) and the same dress in kid’s sizes ($25), so the whole family can show off their love of this irrational number.

Buy it: Svaha

3. Cutie Pi Unisex Onesie; $14

A baby onesie with the pi symbol.

Inspire a love of irrational numbers in the young mathematician-to-be in your life with this adorable cotton onesie, available in five colors for 6- to 24-month-olds.

Buy it: Amazon

4. Cheat Sheet Shower Curtain; $56

Cheat sheet shower curtain

We do our best thinking in the shower, and this machine-washable shower curtain is sure to inspire a stumped mathematician to finally figure out x once and for all.

Buy it: Society6

5. Pi’d Piper T-Shirt; $20

A shirt that has the pi'd piper.

On this shirt, a Pi’d Piper enchants dozens of pi’s first digits to follow his lead (how many can you remember?). Preshrunk and machine washable, taking care of this t-shirt is easy. You can also find the same one in kid’s sizes ($13).

Buy it: Svaha

6. Mathematical Glasses; $38

Mathematical glasses.

You'll be toasting to a gift well done after they open this set of four pint glasses measuring out the number of ounces in Pythagoras's constant, the Golden Ratio, Euler's number, and of course, pi.

Buy it: UncommonGoods

7. Quantum Physics for Babies; $8

A book for babies about Quantum Physics
Sourcebooks Explore/Amazon

It's never too early to get your budding mathematician hooked on STEM! This quantum physics intro is meant for 1- to 3-year-old kids, but it's a good refresher for adults to brush up on their knowledge, too.

Buy it: Amazon

8. Spiral Pi Tattoo; $11

Spiral Pi tattoo

This "classroom pack" of temporary tattoos means that when you and 44 of your closest pi pals practice memorizing pi's numerous digits, you never have to leave home without your cheat sheet.

Buy it: Amazon

9. Pi Earrings; $25

Earings shaped like the irrational number pi symbol

You can help the math geek in your life bring their love of numbers to their jewelry box with these sterling silver earrings. The simple pi symbol lends itself perfectly to these accessories, and if you really want to complete the look, take a look at this pi symbol necklace ($20).

Buy it: Svaha

10. Insanity Math Leggings; $29

A pair of black leggings with math equations written on them

Spend your savasana meditating on the wonders of math in these equation-covered leggings.

Buy it: Amazon

11. Add & Subtract Abacus; $18

Add and Subtract Abacus
Melissa & Doug, Amazon

Ancient calculators make great toys when it comes to this colorful bead toy aimed at kids 2 and up. But once the young ones hit grade school, this specially marked abacus will help them visualize arithmetic while still seeing the equations listed out.

Buy it: Amazon

12. Patterns of the Universe Coloring Book; $12

This coloring book takes nature's best mathematical patterns and turns them into a soothing adult coloring book. Take a break from studying math's interconnected worlds, and just connect pencil to paper for a bit.

Buy it: Target

13. Pi Sign Cookie Cutters; $13

Cookie cutters shaped like pi.
Bespoked Curations/Amazon

Cookies are certainly easier to bake in bulk than pies. And if our math checks out, that means they will probably last a little longer, too. (Maybe.)

Buy it: Amazon

14. Hidden Figures; $14

The book Hidden Figures
William Morrow/Amazon

You saw the movie—now delve even deeper into the true stories of Katherine Johnson, Dorothy Vaughan, Mary Jackson, and the other African-American women who worked at NASA as "human computers" during the Space Race. Margot Lee Shetterly's best-seller reveals just how much ground-breaking work these brilliant mathematicians truly did, even while dealing with both gender discrimination and the Jim Crow era. And if you haven't seen the movie, stream it on HBO or purchase it here.

Buy it: Amazon

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