50% off storewide closeout sale!

This is a going-out-of-business sale. This was started as a family business, and since my divorce several years ago, my heart hasn't been in it. So I'm moving on.

Everything is 50% off, while it lasts! The discount happens as soon as you put something in your cart.

Several designs are completely sold out and no longer available, and most shirts have sold out in one or more sizes.

Click here to see shirts listed by sizes that are still available.

Click here for for Women's shirts sorted by available sizes.

Click here for for Youth shirts sorted by available sizes.

Orders over $200 get a 15 percent discount and free USA shipping; orders over $400 get a 20 percent discount and free USA shipping.

Adult Small

Products

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Just du It Calculus T-shirt (Sm, Med, 4XL)
Adult Small, Medium, 4XL.

Just Integral du It -- for those who make integral calculus too complicated. T-shirt is Black. Pricing: $20.

Knowledge Equals Power T-shirt
Front upper left chest: "Know Math"

Back: "Knowledge: The means by which one gains the ability to control one's own destiny. Knowledge Equals Power."

Available in Adult Small and Youth Large only. $20.
Physics Formula T-shirt (Small only)
Size Small only.

Features physics formulae from algebra-based physics, printed upside down so you can read the shirt easily while you wear it. Available in Black or Ash Gray.

Pricing: $20.

Pi Irrational But Well-rounded T-shirt
Printed on Front and Back.

Available in Adult t-shirt, Adult Sweatshirt, and Youth t-shirt. Front upper left chest: Pi symbol in a circle.
Back announces your true nature: "Irrational but Well-rounded"
Available in Ash Gray, White, Yellow, Lime Green, Dark Blue, and Light Green, depending on size.
Adult Sweatshirts available in Gray Medium and Gray 3XL.

Pricing: T-shirts: $20; Sweatshirts: $23.
Blemish Sale items: One Stone Blue XL at $15; one Yellow XL at $18.

PIRaTe Periodic Table T-shirt (Small, Large, XL)
Sizes Adult Small, Adult Large, Adult XL.

Price: $20. .

Properties of Math Dept. T-shirt
Printed on Front and Back.

Front: "Properties of Math Dept."
Back: "Properties of Math Department", followed by various additive and muliplicative properties.
Available in a variety of colors.

Price: $20.

Quadratic Formula T-shirt 3

Available in men's and women's sizes.

The quadratic formula with a diagram of a completed square, and the phrase "Solutions for the completely square."
Available in Black, Ash Gray, Violet, Yellow, Stone Blue, Navy Blue, or Orchid, depending on size.

Pricing: $20.
Blemish sale item: Stone Blue Small for $12.

Question Everything T-shirt (Small only)
Printed on Front and Back. Sizes Small, Medium only.

Front upper left chest: "Know Math"
Back: "Question Everything. Fear nothing but ignorance. Know Math."
Shirt is Ash Gray. Available only in Small.

Pricing: $20.

Science is Awesome T-shirt

Dinosaurs, tornadoes, DNA double helix, and more. . . How could science not be awesome?
T-shirt is Navy Blue.

Price: $20.

SCIENCE! T-shirt
Comes in Adult and Youth sizes.

"SCIENCE!" spelled out using the shapes of various science-related items.

Price: $20.