Moonlit desk with blank parchment, a lantern, geometric tools, a tangram, and a quiet village at night

Birgit Mueller

101 Nights

A mathematical storybook about logic, number systems, proof, and the strange things that happen after dark. Night after night, Mira dreams her way into riddles she has to think her way out of.

Staff sign in View chapters Read the book

Opening chapters

00All chapters are privateSign in as staff to read the book.View

How the book works

NightsDreams with riddlesEach night Mira dreams herself into a story that turns on a logic puzzle.

DaysWaking life betweenThe days carry the puzzles back into school, family, and friendships.

PuzzlesInteractive extrasSelected chapters continue into hands-on mathematical workbenches.