NEW!

Individually hand dyed Tie-Dye Pi T-shirt. Each shirt has a pattern and coloring somewhat similar to the shirt shown, but no two are exactly identical.

Pricing:
Adult Short Sleeve Small, Medium, Large, XL: $22; 2XL, 3XL: $25.

NEW!

Added by popular demand. (Don't get it? Read the shirt aloud.) Printed on relaxed women's fit shirt.

Pricing:
Adult Short Sleeve Small, Medium, Large, XL: $17 .

NEW!

T-shirt is black.

Pricing:
Adult Short Sleeve Small, Medium, Large, XL, 2XL: $17.

The Greek letter Pi, ringed by the first 130 digits of the irrational number Pi. The symbol outline and the digits glow in the dark.

Pricing: $14 to $19.

Celebrate Pi Day or just show your irrational side to 3045 digits.
Available in Black, White, Ash Gray, Pink, Stone Blue, Violet.
Long sleeves are Black or Ash Gray. Youth shirts are black.

Pricing: $14 to 19.

SALE! Youth Black are on sale for $10, while supplies last.
Adult Long Sleeve Ash Gray are on sale for $14, while supplies last.

Sidney Harris Cartoon with caption: "I think you should be more explicit here in step 2."
T-shirt is Ash Gray.

Pricing: $17 to $24.

"Reality is for people who can't handle the square root of -1."
Available in Black and Indigo Blue.

Pricing: $14 to $16.

SALE! Navy Blue, Ash Gray, and White Reality t-shirts are on sale for $10, while supplies last.

Mathematical Advisory: Graphic Content; Explicit Functions.
Graphs and explicit functions for straight line, parabola, sine, cosine, and semicircle.
Available in Black, Indigo Blue, Ash Gray, and White.

Pricing: $14 to $16. .

SALE! White Small Math Advisory t-shirts are on sale for $10, while supplies last.

This cartoon discusses the relationship between correlation and causation.
This design is printed on a somewhat lighter weight shirt than our usual heavyweight t-shirts.
T-shirt is Navy Blue.

Price: $18.

May the F=ma Be With You Physics T-shirt features vector diagram with acceleration pattern at the bottom.

Pricing: $14 to $19..