The TIME EQUATION SOLVER will be loved by both teachers and students! The time equation solver is a unique calculator allowing students to solve challenging word problems involving elapsed time, distance and rate of travel in a fun and easy way! The time equations solver displays answers to distance and rate of travel problems in both U.S. customary and metric scales. In addition, the calculator indicates answers in both 12-hour and 24-hour notation. The TIME EQUATION SOLVER features 3 modes: Elapsed Time, Distance and Standard Calculator. Large, 3-row display is easy to use, and arrow keys allow students to toggle back and forth as they input values. Activity Guide included. Made of durable plastic, calculator measures 3 3/4in.L x 3/4in.W x 7in.H. Requires 1 button-cell battery, included. Use the TIME EQUATION SOLVER to help students solve some of the most challenging math problems they will encounter in elementary school.