Those of us who grew up coloring remember the cardinal rule: stay inside the lines. But those who pick up the Patterns of the Universe coloring book have to stay in the sines (and cosines and tangents ...

A detail of the Mandelbrot set, a fractal named after Benoit Mandelbrot, the French mathematician who investigated it in the 1970s. If you were to zoom in at any ...

A math coloring page turns ordinary practice into something visual and creative. Kids solve problems, match numbers, and watch patterns appear as they color, making math feel more like art than ...

Crayons, of course. Scented markers. Colored pencils, presharpened. And coloring books by the jillions. Why do people like coloring so much? For grown-ups, I can totally get the nostalgia — and the ...