TIL that after mathematicians spent decades relying on fragile paper models to teach hyperbolic geometry, Daina Taimina discovered in 1997 that simply crocheting with regularly increasing stitches creates accurate, durable hyperbolic planes that are now used in classrooms worldwide.

TIL that after mathematicians spent decades relying on fragile paper models to teach hyperbolic geometry, Daina Taimina discovered in 1997 that simply crocheting with regularly increasing stitches creates accurate, durable hyperbolic planes that are now used in classrooms worldwide.