Optical Illusion Magic: Visual Tricks & Amusements

Optical Illusion Magic: Visual Tricks & Amusements by Michael A. DiSpezio
English | December 31, 2001 | ISBN: 0806966270 | 80 pages | PDF | 16,4 MB
Download Now
Amusements in Mathematics - The Original Classic Edition by Henry Ernest Dudeney

Amusements in Mathematics - The Original Classic Edition by Henry Ernest Dudeney
English | May 19, 2012 | ISBN: 1486146945 | 266 Pages | DJVU | 10 MB

Intriguing math teasers for ages 11 up, brilliantly answered. - This excellent collection of teasers has inferential problems in arithmetic and algebra, and includes geometry, mazes, magic squares and a lot of chess-board tours.
Download Now