SYMMETRY. 180° rotation. INSPIRATION. Created for a talk on Inversions at the Exploratorium. STORY. The Exploratorium is a trend-setting...

SYMMETRY. 180 degree rotation. Turn this design upside down and it reads the same both ways. INSPIRATION. Created for a performance by...

SYMMETRY. 180° rotation INSPIRATION. I first saw Cirque du Soleil in 1988 when their traveling big top first touched San Francisco. I...

SYMMETRY. 180 degree rotational symmetry, bent into a circle, with three repetitions of the word INSPIRATION. One of several variations...

Title lettering for a 10-videodisk anthology of computer animation, published in Japan. I met the folks behind this wonderful anthology...

All about the art of ambigrams — words that read in more than one way. See my ambigrams with different symmetries, and watch a live...

In his Aug 1998 article "A Quarter-Century of Recreational Mathematics" in Scientific American magazine, Martin Gardner wrote For 40...

Joyful math. It’s a phrase that’s catching on in the math popularization community. The Julia Robinson Math Festival is on a mission to...

The Gathering 4 Gardner is a biannual conference that honors science writer Martin Gardner. I have designed every conference logo since...