Our newest dice are the dodecahedron double dice. These are amazing for rolling basic facts for addends or factors 1-12. The possibilities are endless. Excellent for use with Kim Sutton's books Dynamic Dice and Math Drills to Thrill. These dodecahedron double dice are wonderful for rolling fractions. Students can use the inside dodecahedron for the numerator and the outside dodecahedron for the denominator. Students can also roll a fraction using the lesser number as numerator and the greater number as denominator. Sold in packages of 8.