Montessori Long Numerical Rods - Red and Blue Sensorial Math MaterialProduct Description The Montessori Long Numerical Rodsalso known as Montessori Number Rodsare a foundational Sensorial and Math material designed to help children internalize number quantity, length, and numerical order. Each rod increases by 10 cm and alternates in red and blue segments to visually represent the numbers 1 through 10. Key Features Includes 10 rods ranging from 10 cm to 100 cm in length Each rod segmented into 10 cm red and blue units