Math Set Includes: 100 Abacus Math Frames, 110 Math Cards. Understand the concept of numbers: 100 abacus is intuitive and visible, which is helpful for understanding the concept of numbers. By sliding the ball, you can develop finger dexterity and understanding of numbers. It will also help you learn addition, subtraction and multiplication tables High Quality Wooden Abacus Set: Wooden abacus and counting sticks are made of durable and -friendly wood, ensuring long-term use and safe play . Attractive Design: The two-color wooden abacus has alternating red and yellow beads in each row, making it easy to distinguish and count, making learning more and visually appealing. Abacus is an perfect tool for teaching basic numbers, addition, subtraction, multiplication and division, helping children lay the foundation of mathematics. Material: wood Color as shown Package Contents: 1 x Arithmetic rack 110 x Math Cards Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.