Children build addition and subtraction skills in a flash—with a hands-on discovery can they explore on their own! Part of our Math in a Flash! series, our easy-tote can includes 25 different question cards that focus on addition and subtraction concepts, plus a ten-frame and colorful frog manipulatives that get kids excited about learning! Best of all, the activities are designed for independent use: Children just select a question card, then use the manipulatives to solve each self-checking problem! Can measures 6 1/2" tall.