This is a children math teaching dice, which is made of nice acrylic material. The good acrylic material can support long-lasting use, which is sturdy. Help your kids learn math in an interesting way. And the size is small for you to carry. Don't miss it! Features - Color: Assorted Color - Material: Acrylic - Size: 1.60X1.60X1.60cm/0.63X0.63X0.63inch(calculating signs) - Size:1.20X1.20X1.20cm/0.47X0.47X0.47in(123) -The dice prop is suitable for classroom accessories, home teaching and math learning. - It can also be applied to parties or playing with friend at home or at school with classmates indoors. - Make math sign learning to become easier, novelty design can attract student's interest, help them learn math while playing - Compact size make it convenient for you to carry.The dicealso can bring much convenience to you. - The surface of dice is printed with clear math signs and numbers, which is for easy reading. Package list: 6 x dice toys(123) 1 x dice(calculating signs)