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 Large

Products

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Chaos in the Classroom T-shirt (Large only)

Cartoon with fractal teacher asking fractal students, "Why must I iterate and reiterate?"
Available in Black, Ash Gray, and Natural (undyed cotton).
Size Adult Large only.

Price:$20.

Eat No Sleep Caffeine Molecule T-shirt
Sizes Adult Small, Adult Medium, Adult Large.

Pricing: $20..

Dare to be Differential T-shirt

Front: Know Limits
Back: Dare to be Differential

Available in Stone Blue, Ash Gray, White, and Yellow.

Price: $20.

Just Solve It T-shirt (Large only)

For those who make algebra too complicated.
Small Print: "y'gotta parabolam?" And "y? =because it's there."
T-shirt is Ash Gray or White. Currently available in sizes Large and 2XL only.
Blemish sale item: one Large $16.

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.

Warning Engage Brain T-shirt
Printed on Front and Back

Front upper left chest: Stylized "Think" logo.
Back: "WARNING: Engage your brain before opening your mouth. In case of malfunction or loss of control, stop, back up, and try again."
Available in Ash Gray, White, or Yellow.

Price: $20.

Get Radical T-shirt
Available in Men's, Women's, and Youth sizes.

Upper left chest: "Get Radical" with stylized square root sign.
Back: "It's OK to like Math"

Price: T-shirts $20.

On and On Anon Infinity Math T-shirt
Available in Men's and Women's t-shirts.

Front: "On & On Anon... The Infinite Step Program for the Compulsive Counter". Back:  Proud to Say "I Count" ... A Lot". .


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.