When high school senior Matt Forsythe discovers a weird computer and a secret door at school, a series of events unfolds where he and his friends solve one mathematical puzzle after another. After finding a teleportal, they travel to a strange world where numbers are actually alive! There they meet the mad scientist Maglio and the ghostly Fifty-Seven and discover that some of the numbers are mysteriously disappearing.
Charles Fischer has taught in public and private schools in a variety of settings, from rural Maine to inner city Atlanta. In the past 20 years, he has worked with a wide range of students from 4th grade to AP English and has been nominated for Teacher of the Year four times. He has his Master’s degree in Teaching & Learning from the University of Southern Maine, and received his B.A. in English Literature and Creative Writing from Binghamton University. His latest book, The Power of the Socratic Classroom, has won two awards, including the NIEA Best Education Book. His first novel, Beyond Infinity, won a 2014 Independent Publisher Book Award bronze medal (YA fiction). His areas of expertise are in Socratic Seminar, dialogue, listening, inquiry, and critical & creative thinking. He is currently working on a three book series focused on all of these territories.
One of the reasons I wrote this book is because I wanted to make mathematics more interesting for students. For many younger students, math just seems like repetitive arithmetic operations. Let's face it, there's not a lot of excitement there - though it might be necessary. The domain of mathematics is absolutely huge, though, and it's our job as teachers to at least show students more of the domain.
Nine has a curious property that makes it very useful in a lot of those “magic” number tricks where you choose a number and after a few steps someone tells you the amazing result. For example, pick a number besides zero. Multiply it by nine. Add the digits together, and keep adding the results together until you reach a single digit. Result: nine. Try it again if you don’t believe me. Just make sure to keep adding the digits together until there’s just a single digit left. For example 9 × 9 = 81, and then 8 + 1 = 9. Or 23 × 9 equals 207, and 2 + 0 + 7 = 9. Here’s another: 177 × 9 = 1593, and 1 + 5 + 9 + 3 = 18 and then 1 + 8 = 9 as a single digit.