Math Dice Is One Of Thinkfun's Most Popular Games For The Classroom. It's A Mental Math Game, And Is One Of The Best Gifts You Can Buy For Kids Who Like Smart Games And A Challenge. Math Dice Comes With A Very Clear And Easy To Understand Instruction Manual - You'll Be Able To Play Within Minutes Of Opening The Box. Like All Of Thinkfun's Games, Math Dice Is Built To Develop Critical Thinking Skills, And Is A Particular Favorite Of Teachers, Used In Elementary School Classrooms Around The Country.