Librería Desdémona
Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book presents a collection of problems and puzzles, and provides the tools and projects to furnish all-too-sluggish minds with an athletic workout and which foster an agility of the mind as they entertain. It is dedicated to all the underpaid teachers of mathematics everywhere.