Cartoon with fractal teacher asking fractal students, "Why must I iterate and reiterate?"
T-shirt is Black.
SALE! $12 to #13, while supplies last (Regularly $17 to $19).
Front: Know Limits
Back: Dare to be Differential
Available in Stone Blue, Ash Gray, and White.
Pricing: $17 to $21.
SALE! Dare to be Differential t-shirts in colors other than Stone Blue are on sale for $12 to $13, while supplies last.
What do you get when you divide the circumference of an apple by twice its radius?
Apple Pi.
Available in Black or Ash Gray.
Product Rule, Chain Rule, Quotient Rule . . . Calculus Rules!
Available in Black, Ash Gray, or Stone Blue.
Pricing: $14 to $16.
SALE! Stone Blue and White Calculus Rules t-shirts are on sale for $10, while supplies last.
Available in Black, Indigo Blue, Ash Gray, or Violet.
Price: $14 to $16.
SALE! Violet and Ash Gray Derivers Wanted t-shirts are on sale for $10, while supplies last.
As seen in the Numb3rs episode "Atomic Number 33". Area and Volume formulae are Easy as Pi when you wear this t-shirt.
Available in Black, Ash Gray, White, and Violet. Available in Adult Short Sleeve and Long Sleeve, and in Youth Short Sleeve .
SALE! Ash Gray Short Sleeve are on sale for $10, and Ash Gray Long Sleeve are on sale for $14, while supplies last.
The Fibonacci series (0, 1, 1, 2, 3, 5, 8, 13...) applied to the letters of Fibonacci's name (except that we skipped the zero). T-shirt is Black.
Pricing: $14 to $16.
Front: "Half of all people don't get fractions or percentages..."
Back:" But the other 25% do just fine."
Available in Black, Indigo Blue, or White.
Pricing: $14 to $16.
SALE! White Small and 2XL Fractions and Percentages t-shirts are on sale for $10, while supplies last.
You can have your Pi and e it too, as demonstrated on this t-shirt.
Available in Black, Ash Gray, and White.
Pricing: $14 to $16.
SALE! White XL and 2XL Have Your Pi t-shirts are on sale for $10, while supplies last.
Just Integral du It -- for those who make integral calculus too complicated.
Available on Black or Ash Gray.
Pricing: $14 to $16.
