Explores controversies in the history of numbers, especially the so-called negative and ''impossible'' numbers. This book uses history, puzzles, and lively deba

A student in class asks the math teacher: "Shouldn't minus times minus make minus?" Teachers soon convince most students that it does not. Yet the innocent ques

Positive and negative numbers are addressed in this fun book with rhyming text. Learn all about absolute value, how to compare and order numbers, rational value