The 9-row colorful plastic abacus with 5 beads per row is an excellent tool for students learning mental arithmetic. This abacus is good for classroom settings, allowing kids to visualize and understand mathematical concepts. By sliding the beads, students can perform basic calculations such as addition, subtraction, multiplication, and division, making math learning interactive and fun. Features - Color: Multi -Material:Plastic - Size: 18.00X6.00X1.50cm/7.07X2.36X0.59in -Fine craftsmanship: the 9row colorful plastic abacus is meticulously crafted with attention to detail, ensuring a smooth and enjoyable user experience -Design:, this abacus caters to various levels of calculation difficulty, making it versatile for different learning stages -Abacus mental arithmetic aid: equipped with five beads per row, this abacus is good for students to practice and enhance their mental arithmetic skills -Lightweight and portable: its compact and lightweight design makes it easy to carry around, allowing for calculations anytime, anywhere -Vibrant colors: the abacus comes in multiple colors, catering to different user preferences and adding a touch of personalization to the learning tool Package list: 1pcs colored abacus