reviewed by Floyd Morrow(confirmed purchase) Rating: ★★★★★ (Date Added: Wednesday 11 April, 2012)
A few days ago, I gave this book 5 stars because it is a great book on how to modify calculators. After reading all the supplemental information on mental math effects, I have to give it another 5 stars because there is a real gem on page 46. I have been reading mental math and magic books for the past 50 years and I have never seen anything like it. The 3 By 5 Trick is easy to learn and a real reputation builder. Try it - Play with it - you'll like it. This effect, by itself is worth the price of the book. Thank you Shawn Evans.