# 15 Pi Day Gifts for the Math Fan in Your Life

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.

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#### 1. PI PIE PAN; $25

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.

**Find It:** Amazon

#### 2. "I EIGHT SUM PI PLATES"; $35

Pair that pi pie with a set of these special plates decorated with a formula that spells out "imaginary unit eight summation pi"—or, essentially, "I ate some pie." Yes please!

**Find It:** Uncommon Goods

#### 3. CUTIE PI UNISEX ONESIE; $14

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 6-24 month olds.

**Find It:** Etsy

#### 4. CHEAT SHEET SHOWER CURTAIN; $69

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.

**Find It:** Society6

#### 5. PI MIRRORS PIE T-SHIRT; $6

Consider this equation: Math puns + affordability = this hilarious gift tee.

**Find It:** $6 Dollar Shirts

#### 6. MATHEMATICAL GLASSES; $38

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.

**Find It:** Uncommon Goods

#### 7. *QUANTUM PHYSICS FOR BABIES*; $7

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

**Find It:** Amazon

#### 8. SPIRAL PI TATTOO; $12

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.

**Find It:** Amazon

#### 9. ALBERT CLOCK; $340

Definitely know your audience before gifting this head-scratcher of a clock. For some, the regular mental exercise to figure out the time would be a welcomed brain-teaser. For others, it could be a frustrating distraction. But, we think its namesake—it should be relatively easy to figure out which Albert it's referencing—would be a fan.

**Find It:** Museum of Modern Art

#### 10. MATHEMATICS LEGGINGS; $25

Spend your *savasana* meditating on the wonders of math in these equation-covered leggings, which come in sizes XS-4X.

**Find It:** Modcloth

#### 11. ADD AND SUBTRACT ABACUS; $20

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.

**Find It:** Amazon

#### 12. *PATTERNS OF THE UNIVERSE* COLORING BOOK; $13

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.

**Find It:** Target

#### 13. PI SIGN COOKIE CUTTERS; STARTING AT $5

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 …

**Find It:** Amazon

#### 14. MARBOTIC SMART NUMBERS; $39

This hands-on math game makes learning arithmetic engaging and entertaining, and can help kids 3–6 years old recognize units and solve basic additions and subtractions. These wooden letters come with three free apps that you pair with any iPad and most Samsung and Nexus tablets.

**Find It:** Target

#### 15. *HIDDEN FIGURES* IN PAPERBACK; $10

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.

**Find It:** Amazon