Teaches students key skills such as fractions and measurement through real-world representations. Includes six sets of 74 wooden rods (444 rods total) in an assortment of colors; each color represents a different length, from 1 cm to 10 cm. Enough for 12 to 18 students to use at a time. Size: 37.3 x 25.2 x 7.9 cm. Ages 4+.