They multiply. POW They divide. ZAP They battle evil. HOORAY Thanks to The Solvers, learning math has never been this fun In this graphic novel series, a crew of crime-fighting kid superheroes teach readers ages 8 and up foundational math skills, such as multiplication and division, as they battle their evil nemesis, Null Void. All math concepts are presented with fully illustrated step-by-step instructions and tons of superhero...