German language
Published 1997
Der Zahlenteufel : ein Kopfkissenbuch für alle, die Angst vor der Mathematik haben
Annoyed with his math teacher who assigns word problems and won't let him use a calculator, twelve-year-old Robert finds help from the number devil in his dreams.
Annoyed with his math teacher who assigns word problems and won't let him use a calculator, twelve-year-old Robert finds help from the number devil in his dreams.
