Brain Games Optical Illusions is a fun way to get the mental exercise you need.You'll be asked to draw on your powers of observation and visual reasoning skills in order to unlock the tricks behind these illusions.More than 150 different optical illusions to challenge your powers of perception.A variety of different optical illusions, from tricks of perspective to perceived motion, are included to keep you entertained.Answer key in the back of the book.Spiral bound, 160 pages.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.