“I do not call my art ‘mathematical art,’” Dr. Roelofs said in a video interview about a week later. “It’s art about mathematics. Every artist has a favorite subject, things you want to talk about.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Pretend you're me and you're in math class. Actually, never mind. I'm sick, so I'm staying home today.

Johannesburg - Circles and squares. Rectangles and angles. Cones and cylinders and trapezoids. A science museum is using art and tradition to teach maths to poor children in some of South Africa's ...