Build your own equations, then hit the activator button to hear that equation and the answer. Or, choose from a set of built-in equations and quiz yourself with three multiple-choice answers. Switch to Super Solver mode, which gives you an equation and asks you to solve it by turning the dial to the correct number and hitting the answer button. And for those who like to race against the clock, there's a Time Bender mode, which challenges you to answer as many division equations as possible in 90 seconds. Requires 3 "AA" alkaline batteries (included).












