Math Dice Jr. 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 Jr. is made with high quality components, and 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 Jr. is built to develop critical thinking skills. An extension of the Math Dice line, which is used in classrooms by elementary school math teachers across the country.