Portal through Mathematics

A collection of puzzles and problems mostly on topics relating to secondary mathematics. The problems and topics are fresh and interesting and frequently surprising. The book is organised into 29 themes, each a topic from algebra, geometry or calculus and each launched from an opening puzzle or problem. There are also excursions into number theory, solid geometry, physics and combinatorics.

O colectie de puzzle-uri si probleme in principal pe subiecte legate de matematica secundara. Problemele si subiectele sunt proaspete si interesante si deseori surprinzatoare.