What Part of Don't You Understand Math T-Shirt | Math Teacher Gift
$19.95 - $26.95
- Shipping from $5.95
- Printed to order, ships in 1–3 business days with tracking
- Usually printed in Australia, so no import fees in most cases
WHAT PART OF in big block letters across the top, DON'T YOU UNDERSTAND across the bottom, and in between a whole board of handwritten math: a right triangle, limits running to infinity, a unit circle with sin and cos, a curve labeled y = e^sin x, the hyperbola xy = 1, a sum sign, an integral and loose equations scribbled into every corner. Printed in white on Black, Dark Chocolate, Forest Green, Military Green, Navy, Red and Royal, and in black on Sport Grey, Ash and White.
Every math teacher has wanted to ask it, usually on the third pass through the same problem with the chalk still in hand. The board behind the question is deliberately everything at once, trig, limits, calculus and a hyperbola for good measure, so the honest answer is obviously all of it.
Buying it as a gift? It suits the math teacher who grades with a red pen and a straight face, the engineering student living on coffee during finals week, and the dad who still checks the homework and finds the mistake on line two.
Who it's for
- Math teachers, tutors and professors with a dry sense of humor
- Engineering, physics and other STEM students
- Classroom days, Pi Day, exam weeks and trivia nights
- Teacher appreciation, graduation and birthday gifts
Fabric & fit
- Gildan 5000 Heavy Cotton tee, 5.3 oz/yd² (180 g/m²) midweight fabric
- Solid colors are 100% cotton; Sport Grey is 90% cotton, 10% polyester; Ash is 99% cotton, 1% polyester
- Classic unisex fit, no side seams, taped shoulders, ribbed crew neck, tear-away label
- Printed on the front, direct-to-garment (DTG), made to order
- The blank is OEKO-TEX STANDARD 100 certified
- Unisex sizes S to 5XL; for a looser fit, size up
Size chart
| Size | Chest width | Length |
|---|---|---|
| S | 18 in / 46 cm | 28 in / 71 cm |
| M | 20 in / 51 cm | 29 in / 74 cm |
| L | 22 in / 56 cm | 30 in / 76 cm |
| XL | 24 in / 61 cm | 31 in / 79 cm |
| 2XL | 26 in / 66 cm | 32 in / 81 cm |
| 3XL | 28 in / 71 cm | 33 in / 84 cm |
| 4XL | 30 in / 76 cm | 34 in / 86 cm |
| 5XL | 32 in / 81 cm | 35 in / 89 cm |
Measured flat across the chest, 1 in below the armholes, and from the high point of the shoulder to the hem. Tolerance about 1.5 in.
Care
Machine wash cold, inside out (max 30°C / 86°F) · non-chlorine bleach only · tumble dry low or hang dry · iron on low heat, not over the print · do not dry clean.
Printed to order. See our delivery policy for production and shipping times. See more funny t-shirts for men.
Product safety (EU): EU Representative: HONSON VENTURES LIMITED, gpsr@honsonventures.com, 3 Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, Cyprus. Product: Gildan 5000. For adults. 2 year warranty in the EU. Made in Nicaragua.
GPSR information
HONSON VENTURES LIMITED, gpsr@honsonventures.com, 3, Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, CY
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PHONE CASES:
Product information: Generic brand, 2 year warranty in the EU and Northern Ireland
Care instructions: Clean with damp cotton or microfiber cloth. Add a drop of dish soap to the cloth if needed.
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COFFEE MUGS:
Product information: Generic brand, 2 year warranty in the EU and Northern Ireland
Care instructions: Clean in dishwasher or wash by hand with warm water and dish soap. Black mugs: top rack only.
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HOODIES:
Product information: Gildan 18500, 2 year warranty in the EU and Northern Ireland
Warnings, Hazard: For adults. Made in Bangladesh
Care instructions: Machine wash cold (max 30C or 90F), non-chlorine bleach as needed, tumble dry medium, iron, steam or dry on low heat, do not dry clean
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T-SHIRTS:
Product information: Gildan 5000, 2 year warranty in the EU and Northern Ireland
Warnings, Hazard: For adults. Made in Nicaragua
Care instructions: Machine wash cold (max 30C or 90F), hang dry, do not dry clean
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FAQ
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Every item is printed to order and dispatched within 1-3 business days. We print with partners in the US, UK, Europe and Australia, and whenever possible your order is printed in the region closest to you. Delivery after dispatch usually takes: US 2-4 business days, UK and Australia 2-5 business days, Canada and Europe 3-7 business days, rest of the world 10-14 business days. Some items, such as mugs and phone cases, ship from the US and can take a few days longer.
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Yes. We ship to the US, UK, Europe, Australia, Canada and most other countries. Shipping costs are calculated at checkout based on your location, and every order comes with tracking so you can follow it all the way to your door.
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Orders go into production quickly, so email us at 365carmods@gmail.com as soon as possible if you need to change or cancel. Once production has started, we can't modify or cancel the order. If your order arrives damaged or with a print defect, we'll replace it at no cost. Just contact us within 30 days of delivery and include a photo of the issue.
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T-shirts and hoodies use DTG (direct-to-garment) printing, which bonds the ink into the fabric fibers rather than sitting on top. Wash inside-out in cold water and it stays sharp for years. Mugs use dye-sublimation - the design is heat-bonded into the ceramic surface, so it won't scratch, peel, or fade with regular use.
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Each product page has a size guide table with chest width and length measurements in inches and centimeters for every size from S to 5XL. Most customers order their normal size. If you're between sizes or prefer a looser fit, go one size up.
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Yes. Our ceramic mugs are both dishwasher safe and microwave safe. The dye-sublimation print is heat-bonded into the surface, not just printed on top, so it won't scratch, fade, or peel with regular use.