Lenchner, George,, 1917-2006
Creative problem solving in school mathematics : a handbook for teachers, parents, students, and other interested people
/ George Lenchner
. - 2nd ed. rev. and expanded
. - New York (NY) : Math Olympiads, 2005
. - VIII, 284 p. : il.
ISBN 1-882144-10-4 (brochado).
Ensino da matemática Resolução de problemas--Técnicas matemáticas
CDU 372.85