101Things Everyone Should Know About Math by Marc Zev, Kevin B. Segal and Nathan Levy

Simple questions and answers teach math concepts and problem-solving skills. For kids age 10 to 14.

101THINGS EVERYONE SHOULD KNOW ABOUT MATH BY MARC ZEV, KEVIN B. SEGAL AND NATHAN LEVY

Science, Naturally!, 2010, 208 p., $9.95.