Secrets of mental health : the mathemagician's guide to lightning calculation and amazing math tricks
Benjmin, Arthur
Secrets of mental health : the mathemagician's guide to lightning calculation and amazing math tricks - 1st ed. - New york Three River Prens 2006 - 278 p.
978-0-307-33840-2
Magic tricks in mathematics education
Mental arithmetic - Study and teaching
Mental calculator
C 510 B43s
Secrets of mental health : the mathemagician's guide to lightning calculation and amazing math tricks - 1st ed. - New york Three River Prens 2006 - 278 p.
978-0-307-33840-2
Magic tricks in mathematics education
Mental arithmetic - Study and teaching
Mental calculator
C 510 B43s